117 results on '"Wei, Peng"'
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2. Design and Simulation of Hydraulic Winch Tension Control for Trawler
- Author
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Jia Qi Zhang, Yong He Xie, De Tang Li, Yong Qiang Hong, Qing Chen, Jun Wang, and Wei Peng Gao
- Subjects
General Medicine - Abstract
The trawler winch is a main winching tool in the fishing operation of trawler. The disturbing influence of various factors such as sea wind and waves, change in the size of the catch and the turning of the fishing vessel during the operation of the trawler will cause unbalanced force on the wire rope of the two winches, which will easily cause the deformation and damage of the fishing net facilities and directly affect the improvement of the fishing yield and increase the harvest. In order to compensate for the change of the tension of the winch tractor during the operation of the trawler, the change of the load tension caused by the wave, or the rotation direction of the fishing vessel, and to ensure the good shape of the net opening, an electro-hydraulic control technology was used to design an automatic trawler tension controller. The tension control method of the trawler is investigated. The tension sensor is used as the input information of the electrical signal of the trawler's left and right trawler, which is measured indirectly and transmitted to the controller for logical operation, and the output torque of the hydraulic motor is changed by controlling the pilot overflow, which drives the trawler winch to adjust the tension of the left and right trawler to achieve the dynamic balance of the control system. In order to solve the problem of the tension of the trawl and the influence of the length change on the trawl, we designed an intelligent control system combining PLC control system and hydraulic system and used AMEsim hydraulic simulation software system to model and simulate it, the results show that without PLC control the torque of hydraulic motor 1 is 2387.7NM, the torque of hydraulic motor 9 is 2148.64NM the difference is 239.06 NM uneven force on both sides of the trailing platform, after adding PLC adjustment torque is obviously controlled torque to maintain about 2300NM, within a certain range to play a reliable adjustment effect.
- Published
- 2023
3. Study on Fuzzy Control of Trawler Winch Based on AMESim
- Author
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Jun Wang, Yong He Xie, De Tang Li, Jia Qi Zhang, Wei Peng Gao, Yong Qiang Hong, Qing Chen, and Cun Jun Li
- Subjects
General Medicine - Abstract
This paper introduces the rapid automatic control module of trawler based on the hydraulic system of ‘Zhejiang fishery scientific research ship No.2’.The hydraulic simulation model of double motor winch system is built in AMESim software, and SIMULINK module in MATLAB software designed closed loop fuzzy PID controller for hydraulic system simulation. through fuzzy PID control technology drives the hydraulic winch to quickly adjust the tension of the traction, maintain the stable balance of the traction force, maintain the optimization of network horizontal expansion, not only improve the fishing efficiency, but also timely and effective protection mesh. the technical achievements formed by the research will enable small and medium-sized trawlers to adjust the tension under various working conditions through the fuzzy PID control system to stabilize the opening shape of the trawl, so as to improve the automation level and fishing efficiency of related trawling equipment, and provide technical support for precision fishing.
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- 2023
4. Study on Fuzzy Control of Trawler Winch Based on AMESim
- Author
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Wang, Jun, primary, Xie, Yong He, additional, Li, De Tang, additional, Zhang, Jia Qi, additional, Gao, Wei Peng, additional, Hong, Yong Qiang, additional, Chen, Qing, additional, and Li, Cun Jun, additional
- Published
- 2023
- Full Text
- View/download PDF
5. Design and Simulation of Hydraulic Winch Tension Control for Trawler
- Author
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Zhang, Jia Qi, primary, Xie, Yong He, additional, Li, De Tang, additional, Hong, Yong Qiang, additional, Chen, Qing, additional, Wang, Jun, additional, and Gao, Wei Peng, additional
- Published
- 2023
- Full Text
- View/download PDF
6. Industrial Engineering and Applied Research
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Wei, Peng Sheng, primary
- Published
- 2014
- Full Text
- View/download PDF
7. Machine Design and Manufacturing Engineering III
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Wei, Peng Sheng, primary
- Published
- 2014
- Full Text
- View/download PDF
8. Research on Resistance to Moisture Damage of Warm Mix Rubber Asphalt Mixture
- Author
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Shi Jie Wu, Wei Peng Chen, Yun Feng Ling, Li Pu Huang, Fan Bing Meng, Guo Liang Yang, and Zhan Long Ma
- Subjects
Best fitting ,Materials science ,Moisture ,General Medicine ,On resistance ,Natural rubber ,Inflection point ,Asphalt ,visual_art ,visual_art.visual_art_medium ,Immersion (virtual reality) ,Geotechnical engineering ,Moisture Damage ,Composite material - Abstract
To verify the resistance to moisture damage of warm mix rubber asphalt mixture, the splitting strength test of warm mix rubber asphalt mixture (WMRAC-13) was conducted under different immersion time and immersion temperature. Test results show that freeze-thaw splitting strength of warm mix rubber asphalt mixture meets the requirement of moisture stability. The immersion splitting strengths in 60°C and 4°C decline with the extension of immersion time. The immersion splitting strengths in 60°C decline faster than those in 4°C. The best fitting function of immersion splitting strengths with immersion time obeys second-order polynomial and power function respectively, and their correlations are the best. The inflection point of attenuation curves is 3th day and 20th day respectively.
- Published
- 2015
9. Action Recognition of Sleeping at the Desk Using Regression on a Dependency Graph
- Author
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Zhi Hai Li, Feng Min, Wang Luo, Qi Wei Peng, Yu Lei, and Gong Yi Hong
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Dependency (UML) ,Computer science ,business.industry ,General Medicine ,computer.software_genre ,Machine learning ,Regression ,Dependency graph ,Action recognition ,Data mining ,Artificial intelligence ,business ,computer ,Desk - Abstract
In this paper, we present a hierarchical method of activity recognition for sleeping at the desk in business hall. The method consists of three steps. First, the reference points such as body joints are obtained from workers in business hall. Second, we build the dependency graph to represent the relationships between reference points. Third, the multidimensional output regressions along the dependency paths are used to estimate the positions of these reference body points. Experimental results demonstrate that our method achieves comparable accuracy to state-of-the-art results.
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- 2015
10. A Genetic Algorithm for Flow Scheduling in Data Center Networks
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Bo Yang, Wei Peng, and Xing Zhou
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business.industry ,Computer science ,Distributed computing ,Population-based incremental learning ,Genetic algorithm ,Data center ,General Medicine ,Routing (electronic design automation) ,Greedy algorithm ,business ,Flow scheduling - Abstract
Traffic in today’s data center networks grows rapidly. Traditional routing and forwarding protocols in data center usually rely on static hashing, and may cause avoidable bottlenecks. We present a genetic algorithm to make better use of the resources. Our goal is to minimize the maximum single link utilization of the network. And results show that our algorithm performs better than a recent greedy algorithm.
- Published
- 2015
11. Low-Speed Preconditioning for AUSM+-Up Scheme
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Wei Peng, Lang Li, and Guo Ping Chen
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Scheme (programming language) ,Iterative method ,Value (computer science) ,General Medicine ,Term (time) ,Physics::Fluid Dynamics ,Matrix (mathematics) ,Low speed ,AUSM ,Time derivative ,Algorithm ,computer ,Mathematics ,computer.programming_language - Abstract
Based on Navier-stokes equations, Weiss-Smith matrix preconditioning method is implemented within pseudo time derivative term. AUSM+-up family schemes and LU-SGS implicit iterative method were used to solve low speed flows and were compared with literature data and theoretical value. Through comparing calculation with the literature data and theoretical value, The results showed the preconditioning algorithm can be applied efficiently to the low speeds flow field, All these works built foundations for further application of chemical flows.
- Published
- 2015
12. Influence of Waterproof Wall in Approach Channel of Double-Line Ship Lock on Flow Condition
- Author
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Jun Tao Li and Wei Peng
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Transverse plane ,Engineering ,Record locking ,Flow velocity ,business.industry ,Flow (psychology) ,Line (geometry) ,General Medicine ,Single line ,business ,Communication channel ,Marine engineering ,Power (physics) - Abstract
Unsteady flow during lock filling and emptying in approach channel of double-line ship lock is more complicated than that of single line ship lock. In this paper, by a 3-D numerical model, the water fluctuation inside approach channel under different arrangement types of waterproof wall and the hydraulic characteristics such as longitudinal flow velocity and transverse flow velocity were analyzed on the basis of the 2000t second-line ship lock construction project of Zhuzhou navigation power junction in Xiangjiang River. According to the separate arrangement scheme and the completely-connected arrangement scheme of approach channel, the flow condition problem may exist in the scheme was analyzed. In order to improve the ship navigation and berthing condition, it was proposed that the waterproof wall should be set between the approach channels of the second-line ship lock.
- Published
- 2014
13. Transplantation of U-Boot on NAND Flash Based on S3C2440 Processor
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Zhi Wei Peng, Zhao Yu Ding, Jian Wei Lv, and Peng Zhang
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Transplantation ,Flash (photography) ,Task (computing) ,Computer science ,Kernel (statistics) ,Code (cryptography) ,Operating system ,NAND gate ,General Medicine ,computer.software_genre ,Embedded operating system ,computer ,Booting - Abstract
The main task of bootloader is to copy the kernel image to RAM , and then jump to the entrance of the kernel to run the operating system . It is the first-running code when the system is powered on . U-boot , with its open-source codes , supporting for varieties of embedded operating system kernel , high reliability and stability , has been in the mainstream of bootloader . However , it has not yet provided the original support for the S3C2440 processor , neither does its NAND flash . This paper analyzes two flashes in reference to the corresponding start-up mode , and introduces the U-boot start-up procedures briefly and figures out the major steps of transplanting U-boot to the target platform . U-boot was transplanted successfully .
- Published
- 2014
14. Study about Numerical Simulation of Subsurface Flow Constructed Wetlands Based on Hydrus-CWM1
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Neng Yong You, Wei Peng Guo, Xiu Qing Lu, and Bo Xiong
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chemistry.chemical_classification ,Hydrus ,Engineering ,geography ,geography.geographical_feature_category ,Computer simulation ,business.industry ,Environmental engineering ,Wetland ,General Medicine ,chemistry.chemical_compound ,Wastewater ,Nitrate ,chemistry ,Constructed wetland ,Organic matter ,Subsurface flow ,business - Abstract
This paper presents how to simulate the biochemical transformation and degradation processes for Organic matter (COD), Ammonia nitrogen (NH4-N) and Nitrate (NO2-N+ NO3-N) treating synthetic wastewater in subsurface flow constructed wetlands with the Constructed Wetland Model N°1 (CWM1), which has been developed in HYDRUS Wetland Module,Version2.Organic components estimation experiments had been carried out. Values of stoichiometric coefficients and kinetic parameters in classic literature were applied, but some parameters had been adjusted to match measured data. At last, the simulation results were evaluated by deflection analysis. The quality of the results suggested that CWM1 is a promising numerical simulation model for studying the biochemical transformation and degradation processes in SSF CWs.
- Published
- 2014
15. Synthesis of 4-(2-(Piperazin-1-Yl)-7,8-Dihydro-5H-Thiopyrano[4,3-d]Pyrimidin-4-yl)Morpholine and 4-Morpholino-2-(Piperazin-1-Yl)- 7,8-Dihydro-5H-Thiopyrano[4,3-d]Pyrimidine 6,6-Dioxide
- Author
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Shan Xu, Wu Fu Zhu, Hui Xia, Yuan Biao Tu, Fei Lei, Peng Wu Zheng, Wei Peng Zeng, and Cheng Yu Sun
- Subjects
chemistry.chemical_compound ,Piperazine ,Pyrimidine ,chemistry ,Morpholino ,Yield (chemistry) ,Morpholine ,Proton NMR ,General Medicine ,Discovery and development of mTOR inhibitors ,Medicinal chemistry - Abstract
Two novel thiopyrano [4,3-d] pyrimidine derivatives 7 and 8 were synthesized from dimethyl 3,3'-thiodipropanoate through six steps including two times of cyclization, chlorination, oxidation, substitution with morpholine and piperazine and their structures were confirmed by1H NMR and MS spectrum. The total yield of the six steps was 18.6% (calculated from methyl dimethyl 3,3'-thiodipropanoate). The synthetic routes of them can be used to synthesize PI3K/mTOR inhibitors bearing a thiopyrano [4,3-d] pyrimidine nucleus.
- Published
- 2014
16. Research on Mitigation of Low Order Harmonics in the Grid-Connected Single-Phase PV Inverter
- Author
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Xiao Peng Wu, Yong Tao Wang, Yang Yang, Li Yong Yang, and Wei Peng Liu
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Engineering ,business.industry ,Photovoltaic system ,General Medicine ,Grid ,Maximum power point tracking ,law.invention ,Adaptive filter ,law ,Harmonics ,Electronic engineering ,Inverter ,Grid-tie inverter ,business ,Transformer - Abstract
In this paper, a single-phase grid-connected photovoltaic (PV) inverter topology consisting of an H-bridge circuit, an inductive filter and a transformer interfacing the grid is considered. To improve the quality of the grid current and eliminate low order harmonics caused by the inverter’s dead time, a strategy of adaptive harmonic compensation method is proposed, and the parameters related are designed. The experiment results show that the proposed method has a good effect to mitigate low order harmonics and can improve the quality of current injected to the grid.
- Published
- 2014
17. Circuit Designs for an Automation Intelligent Electrical Distribution Terminal Unit Based on DSP
- Author
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Xiao Hui Zeng, Wei Peng Zhou, Hong Song, and Lian Jun Hu
- Subjects
Engineering ,Digital signal processor ,Distribution (number theory) ,business.industry ,Reliability (computer networking) ,General Medicine ,Automation ,law.invention ,Power (physics) ,Relay ,law ,Embedded system ,Computer data storage ,business ,Computer hardware ,Digital signal processing - Abstract
An automation intelligent electrical distribution terminal unit is designed in the paper, making full use of the super calculation ability of digital signal processors. Whole hardware design and circuit designs, such as power conversion module, relay control module communication and data storage module etc, are discussed respectively in the paper. Researches on the reliability of the intelligent terminal unit are carried on finally. Results show that the unit can operate safely, stably and reliably.
- Published
- 2014
18. New Methods for Deriving All Minimal Diagnostic Using Satisfiability Algorithms
- Author
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Li Sha Cai, Wei Peng Zeng, Er Min Lin, and Guo Huang
- Subjects
Set (abstract data type) ,Identification (information) ,Point (geometry) ,General Medicine ,Decision circuit ,Fault (power engineering) ,Boolean satisfiability problem ,Algorithm ,Satisfiability ,Mathematics ,System model - Abstract
In the model-based diagnosis reasoning, diagnosis in two steps,they are generating all minimal conflict sets of conflict identification and Generate all the minimal hitting sets of candidate generation.In this paper, we propose new method based on SAT solver generates all minimal diagnostic.Firstly the normal behavior,system model and obtained observations are described in conjunctive normal form.,then all related clauses of Pending diagnostic system put into SAT solvers. The decision circuit failure problem is converted to satisfiability problem. Hence combine CSSE-tree for solving minimal diagnostic.It can determine the point of failure without first solving the conflict set and then with hitting set algorithm.A method is presented to directly slove the minimum fault sets,which is quite different from the traditional model-based diagnosis.The diagnosis is only finished in one step.
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- 2014
19. Simulations on the Stability and Stabilization Method for Random Long Delay Network Control
- Author
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Tian Wei Peng
- Subjects
Engineering ,Transmission delay ,Transmission (telecommunications) ,Control theory ,business.industry ,Bandwidth (signal processing) ,Elmore delay ,General Medicine ,State (computer science) ,Networked control system ,business ,Telecommunications network ,Stability (probability) - Abstract
Networked Control System (NCS) is a class of feedback control system forming a closed loop through the communication network. Due to the nodes conflicts, poor network stability, limited data bandwidth and other uncontrollable factors in the transmission, network-induced delay is the main factor reducing system performance and stability. Studying the state feedback rules of Long Delay Network Control system, the author proposes Stability and stabilization method for Random Long Delay Network Control. The method models random long delay closed-loop network control system, compensate the delay and complete the network stability and stabilization. Finally, a numerical example is given to verify the validity of the conclusion.
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- 2014
20. Path Planning of Bionic Robot Fish Based on Genetic Algorithm
- Author
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Zhi Wei Peng and Wei Guo
- Subjects
Engineering ,Fitness function ,business.industry ,General Medicine ,Robot fish ,Robot control ,Genetic algorithm ,Path (graph theory) ,Underwater robot ,Artificial intelligence ,Motion planning ,MATLAB ,business ,computer ,computer.programming_language - Abstract
As an important part of the underwater robots, bionic robot fish is one of the international forefront in the related research fields. This thesis first designs specific ways of robot fish path planning based on genetic algorithm, then builds the environment model and selects the appropriate fitness function. Finally, it uses the MATLAB to simulate the robotic fish barrier shield path, then analyses and summarizes the experimental results.
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- 2014
21. Research on Damage Identification of Cable-Stayed Bridge with Model Test Based on Dynamic Characteristics
- Author
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Zhao Hui Lu, Quan Hui Chang, Lu Lu Wang, Wei Peng, and Jian Guo
- Subjects
Flexibility (engineering) ,Identification (information) ,Engineering ,Modal ,business.industry ,Model test ,General Medicine ,Structural engineering ,Cable stayed ,Sensitivity (control systems) ,Curvature ,business ,Bridge (nautical) - Abstract
Based on the change coefficient of modal flexibility curvature, an experimental research on damage recognition of cable-stayed bridge was conducted. The working conditions are introduced, as well as the design and manufacture of the model that can serve as an important guide to the similar experiments. In the design of this experiment, the optimization of cable tensions and the sensor placement optimization were discussed and the suitable methods were chosen and verified. The results verify the sensitivity of the change coefficient of modal flexibility curvature and compare the identification ability on different parts of the same damage location. In addition, how the number of modes required affects the change coefficient of modal flexibility curvature was discussed and the proper number is given.
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- 2014
22. Study on a Novel Structure of Terbium Complex, C6H14O19Tb2
- Author
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Hai Xing Liu, Hui Juan Yue, Qing Liu, Li Kun Han, Lin Tong Wang, Kai Qi Ye, and Xue Wei Peng
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Crystallography ,Materials science ,Structure analysis ,chemistry ,Hydrogen bond ,Hydrothermal reaction ,Atom ,Molecule ,chemistry.chemical_element ,Terbium ,General Medicine ,Crystal structure - Abstract
The Tb complex C6H14O19Tb2has been synthesized from a hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Tb atom is coordinated by nine O atoms. The molecular structure stabilized by the O-H…O hydrogen-bonding interactions.
- Published
- 2013
23. Experimental Study on Temperature during Wire Saw Slicing
- Author
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Qiao Fang Zhang, Zhang Wei, Wei Peng, Zonghua Xu, and Chun Yan Yao
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Engineering drawing ,Materials science ,Outlet (position) ,Silicon ,business.industry ,Abrasive ,Wire saw ,chemistry.chemical_element ,General Medicine ,Slicing ,chemistry ,Thermocouple ,Optoelectronics ,Wafer ,Ingot ,business - Abstract
Heat generated during wire saw slicing can cause silicon temperature raise and make silicon wafer warpage, especially for larger silicon wafers. In order to study the wire saw effect on silicon temperature during slicing process, three kinds of wire saw, mainly semi-fixed abrasive wire saw and traditional wire saw, are applied for slicing silicon ingot. In this paper, the thermocouple is used to measure the temperature of the silicon during wire saw slicing. The experiment results show that the temperature of the silicon increases along with the wire saw working direction and reaches maximum value near the outlet position of silicon. The temperature of the silicon sliced by semi-fixed abrasive wire saw is lower than that sliced by traditional wire saw.
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- 2013
24. Research on the Dynamic Parameters Equivalent Model of Angular Contact Ball Bearings
- Author
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Xiao Qiu Hu, Wei Peng Niu, and Lian Bao Wang
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Vibration ,Engineering ,Modal ,Equivalent model ,business.industry ,Spring (device) ,General Medicine ,Structural engineering ,business ,Finite element method ,Damper - Abstract
Aiming at the key problem in determining the modal parameters of bearings finite element model (FEM), an equivalent model to investigate the bearings dynamic parameters was proposed based on the Sjoväs load integral formulae, and several unequal units of spring and damper were applied; an experimental device for testing the bearings dynamic parameters was developed. The comparison of experimental results and simulation results showed that the proposed modeling approach could accurately analyze the modal parameters of bearings, and the relative errors of corresponding vibration frequencies in the radial and the axial directions could be controlled within 3%.
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- 2013
25. Uncertainty Analysis of the Carbon Tax on Net Profit for an Enterprise
- Author
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Yung Ching Fan, Ruei Shan Lu, Tai Yi Yu, and Kuo Wei Peng
- Subjects
Net profit ,Expected shortfall ,Carbon tax ,Actuarial science ,Incentive ,CVAR ,Greenhouse gas ,Carbon emission trading ,General Medicine ,Business ,Environmental economics ,Value at risk - Abstract
A carbon emission trading/carbon tax is an economic incentive to encourage enterprises to reduce their carbon emissions. The information of greenhouse gas emissions at 2005-2009, carbon emissions trading prices in Europe, the euro-NT dollar exchange rate, and the profits and losses of enterprises, manufacturers of panel-related technology, were gathered to estimate VaR (Value at Risk) and CVaR (Conditional Value at Risk) values of implementing carbon tax or carbon emissions trading, using the Monte Carlo simulation method with the Crystal Ball software. This study uses sensitivity analysis, tornado diagrams, and spider graphs to determine the influence that variables have on enterprise net profit.
- Published
- 2013
26. Design and Test of a Mechanical Device for the Manipulator of the Watermelon Picking Machine
- Author
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Pei Da Wang, Ke Fan Ren, Jun Hua Yu, Wei Peng Zhang, Li Jia Xu, and Zhi Gang Lu
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Engineering ,business.industry ,Process design ,3d model ,CAD ,General Medicine ,Robot end effector ,Clamping ,Finite element method ,law.invention ,law ,business ,Robotic arm ,Shearing (manufacturing) ,Simulation - Abstract
This Paper designs a mechanical device for the manipulator of the watermelon picking machine against the low mechanical degree of watermelon picking machine. The mechanical device utilizes a mechanical arm to drive the end effector to run and the end effector is responsible for clamping and shearing watermelon vines, which avoids vine disturbance and sorts out vines to be easily cut down through the process design of clamping, promoting, and re-shearing. In addition, this Paper applies Pro/E modeling, finite element analysis, and simulation analysis to complete the 3D model design of the mechanical device and transforms the 3D model into 2D drawings in Auto CAD to complete the manufacturing and assembly of the manipulator, and the test result verifies the mechanical device may realize the reliable picking of watermelons.
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- 2013
27. Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate
- Author
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Chang Ping Pan, Min Gang Zhai, Shuan Hu Chen, Xiao Xia Lv, Ze You Peng, Wei Wang, Wei Peng Gai, and Ming Tian Wang
- Subjects
Crystal ,chemistry.chemical_classification ,chemistry.chemical_compound ,Chemistry ,Hydrogen bond ,Benzyl alcohol ,Polymer chemistry ,Ionic liquid ,Molecule ,General Medicine ,Crystal structure ,Alkyl ,Catalysis - Abstract
A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.
- Published
- 2013
28. Reliability Assessment of Existing Reinforced Concrete Arch Bridge
- Author
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Wei Peng, Zhao Hui Lu, Jia Jia, Hai Tao Hou, and Wen Ya Ye
- Subjects
Engineering ,business.industry ,General Medicine ,Structural engineering ,Bridge (interpersonal) ,Finite element method ,Deck ,Stress (mechanics) ,Geotechnical engineering ,Limit state design ,Arch ,MATLAB ,business ,computer ,Reliability (statistics) ,computer.programming_language - Abstract
A finite element model of an existing reinforced concrete arch bridge was established. The reliability index was investigated based on the PDF module in ANSYS software. Taking the maximum concrete stress and tendon stress as limit state, the limit state functions of main arch, upright column and deck are established respectively. There are taken as series system to study the bridge system reliability according to the structural characteristics of reinforced concrete arch bridge. The lowest reliability index superstructure is selected as the whole structure reliability index. Based on JC method and made-up MATLAB program, the reliability index of the example bridge is calculated.
- Published
- 2013
29. An Angle Partitioning Based Algorithm for the ECFRD Problem in Wireless Sensor Network
- Author
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Wei Peng, Yong Wang, Qiang Dou, and Zheng Hu Gong
- Subjects
Computer science ,Computer Science::Networking and Internet Architecture ,General Medicine ,Algorithm ,Wireless sensor network ,k-nearest neighbors algorithm - Abstract
Energy-Constrained Ferry Route Design (ECFRD) Problem is an NP-hard problem to minimize the total route length of a message ferry to access all the sensor nodes in a sparse wireless sensor network, while the route length of a tour under a given value due to the energy constraint. In this paper, we propose an angle partitioning based algorithm (APBA) to solve the ECFRD problem. In APBA, the nodes are partitioned into groups according to the tangent angles of their coordinates, and the route length of each group will not exceed the energy constraint. The experimental results show that APBA can greatly reduce the total route length of the ferry. In the best case, 35% of the total route length can be saved, comparing previous nearest neighbor based split and route algorithms.
- Published
- 2013
30. Design of Smart Hotel Lighting Control System Based on ARM
- Author
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Xiao Peng Guo, Xi Wei Peng, and Qing Bo Geng
- Subjects
Ethernet ,Protocol stack ,ARM architecture ,Engineering ,Software ,Lighting control system ,Control theory ,business.industry ,Embedded system ,Control (management) ,General Medicine ,Architecture ,business - Abstract
The smart hotel lighting control system is the essential feature of every hotel in the future. In order to improve the performance of the system and make it easy to unified manage a large number of rooms, a design of smart hotel lighting control system based on ARM is put forward. The system uses STM32F107 which is an ARM chip based on the Cortex-M3 architecture as the main controller. The system can use switchs to control lighting, it also transplants LwIP protocol stack to achieve Ethernet remote management. This paper will make a detailed introduction of the system through both hardware and software aspects.
- Published
- 2013
31. A Robust Control Approach to Network Control Systems with Short Time Delays
- Author
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Wei Peng, Zi Jian Dong, and Yong Guang Ma
- Subjects
Engineering ,business.industry ,Stability (learning theory) ,Control engineering ,General Medicine ,Networked control system ,Upper and lower bounds ,Shared resource ,System model ,Exponential stability ,Control theory ,Control system ,Robust control ,business - Abstract
Network control system (NCS) is developed from the cross-integration of network technology and control technology, which is with advantages of sharing resources, low price, light weight, easy installation and maintenance, low energy consumption and so on. A robust control approach is proposed in this paper to solve the stabilization problem for networked control systems (NCS) with short time-varying delays. By considering state feedback controllers, the closed-loop NCS is described as a discrete-time linear uncertain system model. Then, the asymptotic stability condition for the obtained closed-loop NCS is derived, which establishes the quantitative relation between the stability of the closed-loop NCS and two delay parameters, namely, the allowable delay upper bound (ADB) and the allowable delay variation range (ADVR). Furthermore, design procedures for the stabilizing controllers are also presented. An illustrative example is finally given to demonstrate the effectiveness of the proposed method.
- Published
- 2013
32. Structure Design of Hand-Held Excavator
- Author
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Chao Wang, Zhen Hui Luan, and Wei Peng Gao
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Engineering ,Reducer ,business.industry ,Hand held ,Mechanical engineering ,Excavation ,General Medicine ,Structural engineering ,Excavator ,Digging ,Structure design ,Drill bit ,Pile ,business - Abstract
At present the hole digging pile is excavated in artificial by digging the hole .This method usually works in low efficiency, high labor intensity of workers and poor security situations. So through the analysis of the artificial excavating pile 's requirement, there is necessary to create a new structural of a machine with the help of pneumatic conveying system to dump soil. In this paper the authors introduce a hand-held excavator which has the above structure in excavating. This machine adopted a motor as a power device, used secondary gear reducer to achieve speed-down, and drill bit was driven by the transmission shaft to complete the excavation. The machine has the digging ability of 240mm excavation pit diameter, simple structure design. It can meet one man operation requirements, and can be carried easily.
- Published
- 2013
33. DTN Routing Performance Evaluation under Random Waypoint with Base Point Mobility Model
- Author
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Qiang Dou, Yong Wang, Wei Peng, and Zheng Hu Gong
- Subjects
Routing protocol ,Waypoint ,Mobility model ,business.industry ,Computer science ,Point (geometry) ,General Medicine ,Routing (electronic design automation) ,business ,Base (topology) ,Computer network - Abstract
Mobility models are drawing increasing attention since it plays an indispensable role in delay tolerant networks performance evaluation (e.g., routing performance evaluation). Random Waypoint with Base Point (RWPBP) mobility model aims to model the movement characteristics in catastrophe rescue scenario. RWPBP mobility model can represent different movement styles according to different parameters. In this paper, we consider the traffic scenario that all the data generated by the nodes need to be sent to the base point, and evaluate the performance of the five DTN routing protocols (i.e., DirectDelivery, Epidemic, PROPHET, SpayAndWait and FirstContact) under the RWPBP mobility model with different parameters. Epidemic performs best in our experiment, since the traffic is not heavy in catastrophe rescue scenario.
- Published
- 2013
34. MACOA: A Modified Ant Colony Optimization Algorithm for the CWFRD Problem
- Author
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Qiang Dou, Wei Peng, Yong Wang, and Zheng Hu Gong
- Subjects
Engineering ,business.industry ,Ant colony optimization algorithms ,Message ferry ,General Medicine ,business ,Wireless sensor network ,Algorithm ,Scheduling (computing) - Abstract
In the traditional scheduling scheme of the message ferry in wireless sensor networks, the route of a ferry is usually designed as a simple cycle. Closed Walk Ferry Route Design (CWFRD) aims to design the ferry route as a closed walk which contains more than one simple cycle to minimize the average weighted delay of the sensed data to the sink. In this paper, an Modified Ant Colony Optimization Algorithm (MACOA) is proposed to solve the CWFRD problem. The experimental results show that MACOA can greatly reduce the average weighted delay, comparing the previous proposed algorithms.
- Published
- 2013
35. Method to Obtain the Regular Term in Bonded Dissimilar Materials under Thermal Loading
- Author
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Jian Zheng, Zhi Xu Gu, Xi Nan Tang, and Wei Peng
- Subjects
Stress (mechanics) ,Free edge ,Mathematical analysis ,Thermal ,Geometry ,General Medicine ,Singular point of a curve ,Stress distribution ,Edge (geometry) ,Joint (geology) ,Term (time) ,Mathematics - Abstract
The stresses near the free edge of the interface of a joint of dissimilar materials after a change of the temperature can be described as the sum of one or two singular terms and a regular term which is independent of the distance and the geometry angles and . The regular stress terms are important for the stress distribution near the singular point. The emphasis in this paper is placed on giving an explicit form of the regular term by using a concept of equivalent edge load.
- Published
- 2013
36. Numerical Analysis on the Influence of Thermal Insulation Way of Closure on Smoke Flow Properties in Building Fire
- Author
-
Xuan Wei Peng
- Subjects
Condensed Matter::Quantum Gases ,Engineering ,Vacuum insulated panel ,Waste management ,business.industry ,Thermal resistance ,Fire damper ,General Medicine ,Dynamic insulation ,Pipe insulation ,Thermal bridge ,Thermal insulation ,Heat transfer ,Condensed Matter::Strongly Correlated Electrons ,Composite material ,business - Abstract
The fire smoke flow prediction software developed successfully was applied to simulate a simple building. The effect of different wall structures on the fire smoke flow properties were compared under the condition of same thermal resistance of external wall. Heat absorption of wall has a cooling effect on indoor air in fire process. Wall with external insulation has the most significant cooling effect on indoor air, and that with internal insulation has the weakest. The effect of intermediate insulation is close to external insulation and that of bilateral insulation close to internal insulation. Room temperature and smoke concentration of internal insulation are both higher markedly than of external insulation. The effect of intermediate insulation is close to external insulation and bilateral insulation close to internal insulation. External insulation added to the closure helps to cool indoor air in the fire process. Intermediate insulation should be chosen to add to the inner wall when needed because of the uncertainty of fire location.
- Published
- 2013
37. Performance Evaluation of Existing Reinforced Concrete Bridge Based on Reliability Analysis
- Author
-
Hai Tao Hou, Wei Peng, Lu Lu Wang, and Wen Ya Ye
- Subjects
Measure (data warehouse) ,Engineering ,business.industry ,General Medicine ,Structural engineering ,business ,Reinforced concrete ,Bridge (interpersonal) ,Reliability (statistics) ,Field (computer science) ,Test data - Abstract
Considering the resisting force variation with time, JC method was adopted to calculate the reliable indicator of the reinforced concrete bridge with simply supported beams based on the field test data. Combined with the classification of security evaluation, the bridge is evaluated as type 5 and rebuild measure was suggested.
- Published
- 2013
38. Wind Field Numerical Simulation of Long-Span Bridge
- Author
-
Wei Peng, Jian Guo, Bing Nan Sun, Wei Chang Gan, and Ding Yu Jiang
- Subjects
Engineering ,Correctness ,Computer simulation ,business.industry ,Wind field ,General Medicine ,Structural engineering ,Bridge (interpersonal) ,Wind engineering ,Girder ,Physics::Space Physics ,business ,MATLAB ,computer ,Physics::Atmospheric and Oceanic Physics ,Linear filter ,computer.programming_language - Abstract
In the research on calculation of interaction of wind and structure, the key to the question is wind field numerical simulation. This paper introduces a practical wind field simulation method of long-span Bridge. The main bridge of Jintang Bridge was analyzed as engineering example, which is a cross-sea cable stayed bridge in Zhoushan of Zhejiang Province , and the linear filter method was applied to calculate along-wind and vertical wind field on main girder, MATLAB program also was adopted to simulate wind field of long-span Bridge. The results show that simulated spectrum is in better agreement with the target spectrum, which verifies validity of the method and correctness of the program.
- Published
- 2013
39. ARMA-AKF Model of MEMS Gyro Rotation Data Random Drift Compensation
- Author
-
Wei Peng Su, Yong Sheng Hao, and Qi Chang Li
- Subjects
Engineering ,Observational error ,business.industry ,Vibrating structure gyroscope ,Rate gyro ,General Medicine ,Kalman filter ,Noise (electronics) ,Compensation (engineering) ,Control theory ,Autoregressive–moving-average model ,Time series ,business ,Simulation - Abstract
Application of MEMS angular rate gyro attitude when monitoring for long-term, zero-point drift and random error in cumulative points after long-term monitoring errors can significantly increase the measurement error. Using ARMA model of MEMS gyros random drift modeling and error compensation method using Adaptive Kalman Filter, which increases gyro attitude measurement of long-term reliability Last experiment. The method in accordance with the principle of time series analysis, integration of observations and estimates of actual system so that it can reflect the influence of external disturbance and noise on the system. It can also reflect the influence of system disturbance on actual system performance improves estimation precision.
- Published
- 2013
40. A Design of Carbon Oxide Sensor in Mine
- Author
-
Lin Xing and Wei Peng An
- Subjects
Single chip ,Engineering ,business.industry ,Amplifier ,Circuit design ,Electrical engineering ,Monitoring system ,Hardware_PERFORMANCEANDRELIABILITY ,General Medicine ,Carbon monoxide gas ,chemistry.chemical_compound ,Carbon oxide ,chemistry ,Microcomputer ,Hardware_INTEGRATEDCIRCUITS ,business ,Hardware_LOGICDESIGN ,Carbon monoxide - Abstract
Monitoring of carbon monoxide gas is an important reference for the monitoring system, to provide protection for the personal safety of the miners. This paper introduces the AT89S52 [1] single-chip microcomputer as the core design of carbon monoxide sensor, realizes the carbon monoxide gas concentration detection. The sensitive head electrochemical sensing original hardware circuit by the amplifier circuit, A / D conversion circuit, display circuit, alarm circuit, an infrared receiving circuit, and the DS18B20 temperature sensor and other components. With real-time monitoring of carbon monoxide sensors, anti-jamming and real-time display function, and through the infrared circuit design makes the operation more convenient, higher accuracy.
- Published
- 2013
41. Biomechanical Study on the Influence of Shaping Amplitude on Material Strenght of Titanium Implant
- Author
-
Yubo Fan, Wen Tao Jiang, Qingyuan Wang, Wei Peng Guo, and Ya Lan Li
- Subjects
Residual strength ,Amplitude ,Materials science ,chemistry ,Three point flexural test ,chemistry.chemical_element ,General Medicine ,Composite material ,Residual ,Strength of materials ,Finite element method ,Titanium ,Stress concentration - Abstract
The effect of shaping amplitude on the residual material strength of titanium implants was studied. A purposely built to and fro three point bending apparatus was developed for different amplitudes on the implant material. The strength of the material after different levels of amplitude was investigated thorough uniaxial tensile testing. The effect of stress concentration due to amplitude was investigated by finite element analysis. It was concluded that plastic deformation due to shaping amplitude produced different effect on the residual strength of the material.
- Published
- 2013
42. Design of Human Machine Interface Based on ARM and Linux
- Author
-
Kun Zhang and Xi Wei Peng
- Subjects
Flexibility (engineering) ,Engineering ,Microcontroller ,business.industry ,Embedded system ,Control unit ,Operating system ,Human–machine interface ,General Medicine ,business ,computer.software_genre ,Linux os ,computer - Abstract
In order to provide more convenient options for users and developers, the design of Human Machine Interface (HMI) based on ARM and embedded Linux is put forward. It makes full use of multiple peripherals of ARM and flexibility of Linux OS. Firstly, hardware design of the HMI system is presented. Then methods of embedded Linux transplanting and the device drivers programming are discussed. Finally, running results and applications of the designed HMI are considered. The design combines the features of traditional HMI and Micro Control Unit (MCU) HMI, including low cost, rich interfaces and easy programming.
- Published
- 2012
43. Design of Intelligent Display Meter Based on ARM
- Author
-
Xi Wei Peng, Ke Gan, and Zhan Dong Zhao
- Subjects
Engineering ,Microcontroller ,business.industry ,Control unit ,Software design ,General Medicine ,32-bit ,business ,Process automation system ,Modbus ,Computer hardware ,Voltage - Abstract
Display meter is the basic unit of automation system. In order to improve the performance and the compatibility of display meter, a design of intelligent display meter based on ARM is put forward. The Micro Control Unit (MCU) STM32F103VE based on the 32 bit ARM Cortex–M3 core is used as the host controller of the meter system. On the basis of this controller, hardware and software design were carried out. The intelligent display meter can receive voltage and current signals from most sensors. Because of the excellent processing capability and rich peripherals of the MCU, the meter can handle large amounts of data rapidly so as to monitor the status of industrial field in real time and communicate with different upper computers.
- Published
- 2012
44. Design of Emergency Power Supply Control System for Seismic Station
- Author
-
Qin Gao, Hong Wei Peng, and Zhen Jing Yao
- Subjects
Engineering ,Switched-mode power supply ,business.industry ,Electrical engineering ,Topology (electrical circuits) ,General Medicine ,Power factor ,Constant power circuit ,Power (physics) ,Control system ,Boost converter ,Electronic engineering ,business ,Electronic circuit - Abstract
According to the special requirements of power supply for seismic station, a new single-phase emergency power supply control system is proposed in this paper. The principle and structure diagram of the system is illustrated. The control strategies of the system and hardware design of key circuits are discussed in detail. The emergency power supply control system adopts high-property C8051F310 single chip micro-computer. According to the monitoring value of input voltage, the system switches between charging and inverting. Main circuit of inverting uses single-phase full-bridge topology. To correct a power factor, charging system applies boost circuit to make input current follow to a given current reference. Experiments validate the feasibility of the proposed design.
- Published
- 2012
45. Technology and Application for Modal Testing of Cable-Stayed Bridge
- Author
-
Quan Hui Chang, Wei Peng, and Yi Song Zou
- Subjects
Acceleration ,Engineering ,Modal ,business.industry ,Line (geometry) ,Simulated annealing ,Modal testing ,Data analysis ,General Medicine ,Structural engineering ,business ,Bridge (nautical) ,Finite element method - Abstract
In the cable-stayed bridge damage identification index based on the dynamic characteristics, it is the key and premises for cable-stayed bridge damage identification using dynamic index, how to extract the modal of structure exactly through optimal placement of sensors. This article uses simulated annealing, In line with the modal assurance criterion, extract mechanical analysis data of Zhangzhen cable-stayed bridge ANSYS finite element model and obtain optimized acceleration sensor layout scheme of main beam. Based on this optimization scheme we carry out a dynamic characteristics test on Zhangzhen cable-stayed bridge. Through the comparison between observation results and calculation results, we find they are very closely. To verify that the simulated annealing algorithm based on modal assurance criterion used in cable-stayed bridge acceleration sensors optimized is effective, viable, and correct.
- Published
- 2012
46. Study on Reliability Evaluation Method of Existing CFST Arch Bridge
- Author
-
Wei Peng, Hai Tao Hou, and Yi Song Zou
- Subjects
Reliability theory ,Engineering ,business.industry ,Load distribution ,General Medicine ,Structural engineering ,Corrosion ,Arch bridge ,Deflection (engineering) ,Evaluation methods ,Steel tube ,Geotechnical engineering ,Arch ,business - Abstract
Based on reliability theory, the application calculation method of Concrete Filled Steel Tube (CFST) arch bridge system reliability index is studied. Select the most unfavorable load distribution in working condition of maximum moment and deflection at the mid-span, from the angle of strain energy, calculated the weights of CFST arch ribs component. On the basis of the grading standards of reliability assessment of the existing bridge components and the critical structures, CFST arch bridge system reliability assessment grading standards are constructed. CFST arch bridges reliability index are evaluated from two aspects (the arch ribs and segment) in this article. As the CFST arch bridge locates in the marine environment, corrosion environment is the serious level of C5-M, steel pipe corrosion is the major diseases of CFST, arch rib which on the corrosion conditions were assessed. The results show that the method can effectively assess the situation of CFST arch bridge.
- Published
- 2012
47. Mechanical and Economic Analysis of Asphalt Pavement Structure on Mix Base
- Author
-
Bi Feng Ou and Hong Wei Peng
- Subjects
Engineering ,business.industry ,Modulus ,General Medicine ,Structural engineering ,Poisson's ratio ,Base course ,symbols.namesake ,Pavement engineering ,Asphalt pavement ,Asphalt ,Deflection (engineering) ,symbols ,Economic analysis ,Geotechnical engineering ,business - Abstract
Based on asphalt pavement design theory and criterions in China, five asphalt structures are put out, including three mix base pavement structures, one typical semi-rigid base pavement structure and one typical flexible base pavement structure. For contract study, different pavement structures were selected with various combinations of modulus and Poisson ratio, but the total thickness is same for comparative analysis. The stress-strain at different depth in asphalt layer is calculated by using BISAR program. The data analysis is carried out for the maximum tensile stress, and the maximum strain of asphalt layer, and the maximum compressive strain on top of sub grade, deflection on asphalt surface. And budget basis price for base is contrasted too. The data analysis results show that the mix base asphalt pavement structures can be designed to get better pavement mechanical performance than typical semi-rigid base and typical flexible base asphalt pavement structures, while the price is higher than that of semi-rigid base. If we consider fatigue life, the cost performance for mix base of upper base with asphalt stabilized macadam is the best. This gives out the important reference for widespread the mix base in future.
- Published
- 2012
48. A New Buffer Setting Method Based on Activity Attributes in Construction Engineering
- Author
-
Jian Guo Chen, Wei Peng, and De Yin Liu
- Subjects
Engineering ,Supply chain management ,Simulation test ,business.industry ,Theory of constraints ,General Medicine ,Schedule (project management) ,business ,Sizing ,Buffer (optical fiber) ,Construction engineering - Abstract
The direct application of the Theory of Constraints (TOC) to construction engineering, known as Critical Chain Management and Buffer Management (CCM/BM), has recently emerged as one of the most popular approaches to schedule management. However, the existing buffer setting techniques have less aken the activity attributes into account. In this paper, we introduce the concept of structure entropy to reflect the complexity of schedule network of construction project and propose a novel method for buffer sizing based on an in-depth analysis of activity attributes. After simulation test and comparison with classical methods, the proposed method is proved to have better accuracy and effectiveness.
- Published
- 2012
49. Study on the Electric Detonator Initiation Explosion Suppression System of Gas Pipeline
- Author
-
Wei Peng An and Hong Xing Wang
- Subjects
Engineering ,business.industry ,Controller (computing) ,Gas explosion ,Coal mining ,General Medicine ,Structural engineering ,business ,Gas pipeline ,Signal ,Automotive engineering ,Detonator - Abstract
In view of coal mine fire, this paper studies on a electric detonator Initiation explosion suppression system. The system is mainly composed of composed of UV flame sensor, controller, and explosion suppression device. According to experiments, the system can complete spurting powder in 185ms since detecting the flame signal, and can prevent fire and gas explosion, can reduce the accidents and the loss caused by the accidents greatly. The scheme of explosion suppression system, the experiment condition and procedure are presented in the article.
- Published
- 2011
50. Bond Strength Analysis among Layers of Grinding Wheel
- Author
-
Xue Feng Xu, Wei Peng, and Chun Yan Yao
- Subjects
Materials science ,Bond strength ,Rough surface ,Abrasive ,Shear strength ,Liquid resin ,General Medicine ,Grinding wheel ,Composite material ,Contact area ,Magnetic field - Abstract
A novel technology is studied in this paper to make photosensitive resin grinding wheel based on layered manufacturing technology. The bond strength among resin layers is analyzed. An effective measure is proposed to improve the bond strength among resin layers of the grinding wheel. We add magnetic abrasive particles into the liquid resin to get rough surface and increase contact area by action of magnetic force. Some experiments are curried out for testing shear strength of resin with magnetic abrasive under different conditions. Results show that this method had a significant effect in improving the bond strength among layers of new grinding wheel.
- Published
- 2011
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