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A dielectric resonator antenna with special shape for camouflage in the city is proposed in this paper. A series of antennas with different materials and shapes chosen from the normal building were made and analyzed. It was found that electrical properties of the antennas were extremely affected by shapes of the antenna and locations of the tap. Based on the results, a dielectric resonator antenna with return loss >-20dB, peak gain >6 dBi at 1.275 GHz was demonstrated. This technique will allow the design and installation of dielectric resonator antenna with good electrical properties for camouflage in the city .

In order to acquaint the application of geological penetrating radar (GPR) in tunnel lining detection elaborately, the tunnel lining model involving diseases (voids, voids filled with water, zone filled with materials and cracks) has been researched with GPR (equipped with a 800MHz antenna). And on the basis of the finite difference time domain method (FDTD), the 2-D simulation model of tunnel lining with different diseases was established with the software GPRMAX2D for further research in 800MHz and 1400MHz antennae. Comparing the GPR images of the test model and the 2-D numerical model with the actual layout settings in the tunnel lining, the following results can be obtained obviously. GPR is impressible to steel, while the lower rebar is difficult to identify for the double-layer rebar; GPR equipped with a 800MHz antenna is appropriate to monitor the void, while the accuracy of the geological radar method is related to the shape, size, depth and water condition of the voids; the accuracy of GPR is almost 50mm for the 800MHz antenna , while it is 20mm for the 1400MHz antenna and cracks can’t be identify with the 800MHz.

To change the traditional manual production mode of hand-tufted carpet which features low efficiency and long production cycle, a CAM system for tufting process in hand-tufted carpet manufacturing has been proposed. The pattern in the format of SVG was studied as the object, and a set of graphic analytic software has been developed on the platform of Visual Studio, it can parse all the element nodes in a SVG document to calculate the feature points corresponding to every color and simulate the tufting path dynamically on the screen. Then dedicated NC code was generated for the open CNC system to use. And the software has provided a solution for accurate estimation of consumption of different color dyed yarn.

In the field of natural gas pipeline leak detection, based on infrasonic wave method of gas pipeline leak detection technology gradually be taken seriously. This paper introduces the basic features of pipeline leak signals and basic principles of infrasonic wave leak detection technology. It analyzes the key factors, which affect accurate positioning. According to the characteristics of leak signal and performance requirements of leakage monitoring system, the infrasonic wave speed algorithm in gas pipeline is modified. Using correlation analysis and wavelet transform method on the leakage signals, the dynamic response time diversity between sensors installed in first and last stop will be more precise. As a result, it improves the positioning precision of leak detection effectively.

Bridge health monitoring system (BHMS) is a package of technologies for structural monitoring, control, maintenance and management. Making use of the fusion of technologies from different disciplines, such as sensing, communication, signal processing, system identification, etc., the system is empowered to simultaneously get all kinds of information which reflect the safety conditions of bridge structure, and provide scientific proof for the analysis of bridge health. The assessment method is the core of the BHMS. In the conventional assessment procedure, there is significant influence of subjective factors involved. A feasibility study on the use of fuzzy comprehensive evaluation method in the bridge condition assessment is presented in this paper. The applications of fuzzy mathematics in condition assessment of bridges were discussed. Based on the research of present methods, analytical hierarchy process and fuzzy mathematics were integrated and applied in condition assessment of the project of main roads bridge Online Safety Monitoring Management System in Hangzhou (Phase II), a web-based urban bridge cluster monitoring system have been established. From a continuous beam bridge case study, it is observed that the fuzzy comprehensive evaluation method is capable of simulating the bridge condition evaluation process and has a good application.

In allusion to temperature hard to control for parameters parameter being variable and nonlinearity in the process of annealing furnace. A detailed study of the annealing furnace temperature control by combined with fuzzy and PID in this paper, all dynamic parameters of the annealing furnace temperature have been considered effectively, and by this control system method the temperature of annealing furnace was controled steadily. Through the simulation experiments show that this PID control mode has a characteristics of good dynamic performancestrong adaptability and good robustness in the application of the annealing furnace temperature control.

A novel design scheme of multiple-valued Schmitt trigger using neuron-MOS transistors is presented. By controlling the voltages of the multiple-input gates, the neuron-MOS literal circuits with hysteresis characteristics are firstly designed. Then, the transmission switches used to pass quaternary signal are controlled by the outputs of these literal circuits to realize three hysteresis loops of quaternary Schmitt circuit. The benefit of the proposed quaternary Schmitt trigger is that the circuit can be fabricated by standard CMOS process with a 2-ploy layer. The three hysteresis loops are fully adjustable by sizing the ratio of capacitive coupling coefficients. The effectiveness of the proposed Schmitt trigger has been validated by HSPICE simulation results with TSMC 0.35μm 2-ploy 4-metal CMOS technology, and the discrepancy of hysteresis values between the simulated and theoretical results is smaller than 6%.

The device is composed of solar battery, power automatic switching, high pressure booster inverter, dielectric-barrier discharge type ozonizer, air compressor and microporous aerator components, whicn is powered by the double power suppl y modes including the solar battery and the city electricity. In the conditions of insufficient illumination or rainy weather, power can switch to the city electricity automatically. The article introduces the composition and working principle of solar ozonizer. The experiment is respectively done in the sample of the second phase of water from BaoDingYingdingzhuang sewage plant, the urban river water and the dyeing effluent with 1500 ml.The power of the solar energy ozonizer is 18W and ozone production is 25 mg/min. The experiment results show that the removal rate of Fecal coliform, Chroma and Chemical Oxygen Demand (COD) are obviously improved. Especially, the removal effect of Fecal coliform and Chroma is very significant. The experiment indicates that the content of NH3-N has increased with the growth of ozone contact time.

ITO transparent film was deposited on glass substrates by RF-magnetron sputtering equipment as electrode, routing material and the photolithography process was studied. The results shown that the ITO based transparent electrode routing needs larger dose energy than that Mo based substrate when the PR processes were all identical. The photo resist cannot be exposed thoroughly where the length/width ratio of gap between routing serried lines lager than 80 as the typical Mo based exposure process. The width of gap reached to 8.7um which was the limit of exposure machine of transparent film after the 2000um-length, 4um-width gap was exposed thoroughly. It should be attention of the routing gap design for electrical characters in transparent flat panel display.

Through analyzing the molding process characteristics of cold-formed steel sheet piling, mechanical testing and metallographic analysis was made on the curved position of the U-shaped cold-formed steel sheet piling , the following conclusions was drawn: Cold formed steel sheet pile was subjected to the complex cross-section cold roll forming process, resulting in the uneven performance of a steel sheet piling along the horizontal. For the open cold formed steel of asymmetric steel sheet piling and complex cross section, a simple test at flat panel location is difficult to represent the overall performance of cold-formed steel, therefore it is necessary to make a comprehensive performance test on locking. A test method to check the locking occlusion performance on the cold bending steel plate is put forward. The experimental tensile strength of the Q235 level of ordinary carbon steel production of cold-formed steel sheet piling locking bite is 66MPa.

The structure of eccentric degenerated 3-D shell element of thin-wall steel tube concrete composite structure and the connection with 3-D block isoparametric element has been discussed using finite element method. Without considering the intensity limit of delamination damage of the two materials, an integrated stiffness matrix is formed with the combination of stiffness matrix of steel-wall shell element and that of concrete spatial block element. In order to make the superposition rule may be used at the joint of 8-node curved shell element and 20-node block element, an eccentric 8-node shell element is constructed.

The contrast tests of 1 reinforced concrete(RC) beams and 4 RC beams strengthened with near-surface mounted carbon fiber reinforced polymer (FRP) strips have been carried out, under conditions of different damage degree of RC beams. It is mainly conducted to investigate the effects of FRP strips reinforcement of flexural strength. The experimental results indicate that significant strength on the ultimate load and rigidity of reinforced concrete beams can be realized by mounting FRP strips to the beams, and propagation of cracks were reduced obviously.

This paper is based on using fuzzy control method and according to the size of bearing residual magnetic detective distance and the diameter of bearing ring; it accurately controls the size of demagnetization machine alternating current. The result shows that the fuzzy control method on bearing residual magnetic quality control by simulation can get a rational control effect of the size of demagnetization machine current. It provides a new theoretical method for precisely controlling the residual magnetic bearings quality.

Electroslag Remelting (ESR) technology is a main method of special metallurgy; and split pillar is one of the most important mechanical units of ESR. The split pillar works not only as the mother body of ESR cross arm, but also as the rotation driving device of the cross arm. Since the tremendous mass of the cross arm and electrodes, serious inertia torque generates when the split pillar rotates, which leads to motion instability and problems of angle location and even safety threatens. In this paper, based on virtual machine technology, dynamic research of the rotation process of the electroslag-remelting-furnace split pillar was proceeded; influences of driving torque applied on the split pillar was researched, as the driving torque being constant, anti-step and with brake torque. 3D solid model of the split pillar and clamping device were established; main technical parameters were accomplished; and simulation research of the dynamic process was proceeded. It was found that, appropriate brake torque was important to better motion stability of the split pillar. The best brake torque was acquired, and the action time of the brake torque was obtained.

Velocity ratio control is one of the key techniques of vehicle metal V-belt type CVT. In this paper, the working principle and hydraulic control system principle of the metal V-belt type CVT were introduced; the mathematic model and fuzzy self-adaptation PID control model of the velocity ratio electrohydraulic proportional control system were established and simulated. It was found that, fuzzy self-adaptation PID control system makes actual velocity ratio change as it was expected with good steady-state characteristics and dynamic response characteristics.

Oil mist lubrication is currently widely used as a lubrication method now. It has some advantages as follows: low fuel consumption, uniform lubrication and high efficiency. In job site, oil mist condensation occurs in the pipeline, and this will not only reduce the efficiency, but also lead to accidents. Nowadays, CFD numerical simulation software has been widely applied in design, but the research of oil mist condensation in the transmission process based on CFD is very fare. In this paper, to choose the right the working parameters and a reasonable pipeline layout in job site, the oil mist condensation in the pipeline was simulated based on CFD. And it was found that, the diameter of oil mist particle is mainly influenced by temperature, and the best temperature range is made out.

Centrifugal Flying Shear is one of the most advanced equipments, which is widely used in tandem mill production lines because of its simple structure and high shearing precision. In this paper, the working principle of the centrifugal flying shear was introduced; the three-dimensional model of the centrifugal flying shear was established; the structural analysis and the dynamic simulation of the flying shear, with the movement rule and trajectory, were made based on MATLAB/SimMechanics and Solidworks/COSMOS Motion; and the control strategy of realizing scale shearing was proposed. The results obtained provide theoretical basis for design of the electronic control system, and facilitate further analysis of the shearing process and parameter optimization design of similar flying shears.