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Speed is a distinctly important factor during the papermaking, its control will directly affect the quality and quantity of paper. ACS800 MultiDrive is a new all-digital drive system developed by the ABB corporation. The DC can export from the two common DC bus after the AC rectified, the DC can be changed into the AC by inverter unit, whose voltage and frequency is adjustable, the adjustable AC can control the speed of three-phase AC motor. Because of fewer electrical cabinets, small size and significant savings in energy sources, its application has already been more and more widely. The composition, principles and advantages of the ACS800 MultiDrive is firstly introduced, the rectifier and inverter units are mainly analyzed. Finally, as an example, the application of the ACS800 MultiDrive in the speed control of 3150/500 paper machine is introduced.

Wavelet moment features of image can reflect the image's part and whole characteristics and have strong anti-jamming ability. We use wavelet moments extracted from Paper-cut patterns to get multi-scale features. Combined with the paper-cut images' characteristics, the different mean and standard deviation of eigenvector are used to compute resolution and produce N class model feature selection. Finally, the eigenvectors are sent to nearest neighbor classifier for recognition. Experiments show that this method is effective in distinguishing paper cut-cut patterns with noise contamination or geometric deformation.

In this paper, four typical thinning intensity were choose to the larch forests. After thinning, significant differences in stand periodic increment between control and thinning plots appeared. ANOVA indicated significant difference in any stand characteristic among treatments prior to thinning. Information on the distribution of stand characteristics in specific tree-size classes at given is valuable to for managers. So the objective of this study was to develop and compare the two methods (i, e., Normal distribution and Weibull distribution) for estimating the diameter distribution of larch forests Baesd on Different thinning intensity in Changbai Mountain, Northeast China, the results showed that all the thinning intensity followed the Normal distribution, and the correlation coefficients were above 0.918, but only the middle thinning conforms to the Weibull distribution, the correlation coefficient is 0.929. From chi-test results, the diameter structure simulated in this paper is applied, and with small application error and high precision. This showed that the Normal distribution can be chosen the prediction function for the area with stand structure distribution in the future.

This paper based on the heat generation of iron core and windings of transformers, makes a detailed analysis of production costs of iron core and load losses and the influence on top oil temperature and hot-spot temperature of transformers. It also explains clearly the meanings of parameters in winding hot-point temperature equation recommended by GB/T 15164-1994 Loading Guide for Oil-immersed Power Transformers. And adjustments and revisions are made on the winding index and oil and fat item to get more reasonable corresponding physical significance of them. At the end, a comparison is made between the recommended equation calculation results and improved equation in loading guide. Although there is a similar tendency of hot-point temperature of the two and the calculation results are not in great different, a more reliability is in improved equation.

Finite steady state data was gathered from filed, steady-state model of pulp washing optimum process was founded by support vector machine(SVM). Simulation result showed that this model could be got in short time, worked with small error, and was strong enough in includes ability, adaptability. So this steady state model foundation method could be worth popularizing during pulp optimum control.

It is urgent to solve the problem of how to accurately understand users' behaviors of visiting websites in the development of e-commerce. Web log mining is an important research method in addressing the problem. In this paper, we propose the new concept of interest pheromone, and on the basis of which design a group users' navigation path mining algorithm based on ant colony algorithm. The experimental result shows that interest pheromone can efficiently track users' changes of interests. It can accurately reflect users' browsing mode when introduced in the algorithm of the paper.

This paper presented a new real-time tracking algorithm for multiple targets in video sequence. In the paper, multiple targets track was realized by combing the static characteristic determination and motion feature between adjacent frames. And the characteristics of moving targets in the video were analyzed. Several important characteristics were selected as the characteristics reference of moving target recognition. The detail of the principle of the algorithm was introduced. The experiment and the applications show that the proposed method can realize real-time multiple target tracking with in 10 targets and the run time is within 40ms.

With the development of national economy and traffic system, car industry has been developed at very fast speed. As a part of the car, the frame supports all kinds of complicated loads coming from the road and the freight being loaded. And many assembly of the car are built in the frame. So the intensity and the strong of the frame play a role way in the car's design. The frame of some truck is analyzed and studied using the ANSYS in this paper. The static intensity of the frame is analyzed and studied in the instance of pure bending and coupled bending and torsion. In this paper I analyzed and studied the intensity of the frame in the instance of the bend and the torsion when the car was running, and analyzed the stress and the displacement of the frame when the car was running in the washboard-road and in the case of sharpturning. The result indicates that the stress of the frame is less than the utmost intension to resist to be pulled of the material being used. So the frame is satisfied with the design, but the stress is less and the economy is not rather better. In this paper the: dynamic characteristic that is mainly mode analysis is analyzed. The mode analysis is the core of the configurable dynamic design, and it overcomes the shortcoming of the static analysis and emphasizes that the problem should be considered from the whole configuration. The mode vibration model and proper frequency of the frame are calculated by mode analysis. The local intension is considered by the frequency and the model. According to the characteristic of the frame, several schemes used to design the frame are come out, which make the frame become light, save raw and processed materials, reduce the cost used produced, increase the fuel's economy and protect the circumstance.

As the infrastructure for the healthcare system, The District Medical Data Center need to be built at first. The model of architecture of District Medical Data Center is proposed in the paper. Both the advantages and disadvantages of the model are set forth while the view is presented. The District Medical Data Center is “patient-centered” instead of “accounting-centered” in the ordinary hospital information system. The paper also reports our project progress in this respect through a case supported by “11th Five-Year Plan”. The paper first raised a new proposal that is cloud computing implementing the District Medical Data Center. The nature of cloud computing is useful for constructing the data center. To the new generation of District Medical Data Center, cloud computing is better approach in the future. The idea, the District Medical Data Center as a service is showed concurrently.

This paper studies dynamic planning problem in the complex supply chain network. Due to the complexity and in order to get a satisfactory near-optimal solution with high efficiency, this paper proposes a model based on complex network theory and two-phase methodology. This practical models focus on some significant aspects of supply chain network design, including the first phase on partners selection, the second phase on the problems such as production & distribution planning, integration costs of inventory & transportation and the reliability of network structures-while so far little attention has been received in the existing literatures. In the end, a computer simulation is introduced.

With the develop of network security, problems in traditional security encryption mode have appeared, such as low security and flexibility, and high overhead. This paper presents a new security encryption model based on improved LFSR (Linear Feedback Shift Register), which combines the high flexibility and low cost of the shift register and the characteristics of the high-speed and reconfigurable performance of FPGA, thereby allowing the system to achieve the purpose of low-cost, real-time allocation algorithm and reorganization of security policy document. This paper elaborates on the model of improved linear feedback shift register encryption algorithm encryption theory, and then introduced the FPGA algorithms and Reconstructable technologies. Finally, with the diagram analysis about the encryption and the valuation of total function, it has been proved that the arithmetic has good cost advantage and reconfigure ability is assured.

This paper presents an obstacle avoidance control algorithm for mobile robot based on fuzzy controller. The environment information surrounding the robot detected by the ultrasonic sensors is firstly fuzzified, and then input into fuzzy control system. The output of the fuzzy control system is used to drive the robot. And the fuzzy control system in this paper is composed of dual fuzzy controllers, one is used to control the obstacle avoiding behavior when the robot is approaching obstacles, otherwise the other controls the robot to move to the goal. In this paper, the design of obstacle avoidance controller is described in detail, and the both are implemented by matlab. In order to obtain control information, it's necessary to fuse the output information of the two controllers. At last, simulation results show that the algorithm can help the robot to avoid obstacles safely and is certainly feasible.

In this paper, high performance real-time detecting and tracking technology for news events are proposed. The difference to previous TDT articles in the detection and tracking is that this attempt to establish the historical hotspot events Corpus first, and analyze the characteristics of the corpus according to timeline. HMM-based named entity recognition model is also used to find out other event characteristics except those reference timeline. By combining the above two methods and SVM,this study proposes its models in detecting and tracking. Experiments presented in this paper shows the models having a high performance in recall and precision.

With the development of the society and the progress of the science and technology, the demands of the customers are getting higher to the reliability of distribution. On the basis of analyzing the network topology of the distribution information system, this paper designs the integrated mode based on C/S and B/S, analyzes the work flow, and describes in detail the main function modules and the key technologies including the release of spatial data and the simulated algorithm of distribution. In this paper, the logic model of the Distribution Information Management System (DIMS) and the database are also designed. DIMS is developed with WebGIS (Web Geographic Information system) middleware and MapInfo OLE+ embedded techniques. It is practically proved that DIS can meet the real-time requirement of the multi-users and implementation functions such as remote power line simulation, output of drawing, and the control of spatial data version.

In this paper, a type of improved hybrid strategy is used to carry out the image segmentation of gold immunochromatographic test strip, which combines the genetic simulated annealing algorithms (GSAAs) and error back propagation (EBP) neural network algorithm. This hybrid strategy can work out these problems in image segmentation of gold immunochromatographic test strip: the area of test strip is pretty small; the breadth of test line testing zone, control line testing zone will not be fixed due to the reaction between samples and test strip. Computer simulation on this hybrid strategy is realized by Visual C++. The results of computer simulation demonstrate that, comparing with the EBP algorithm, the convergence precision and training speed of the EBP neural network can be improved due to the parameters produced from GSAA. Furthermore, comparing with EBP algorithm, the convergence precision and convergence speed of GSAA is much better. At the end of this paper, this hybrid strategy is applied to image segmentation of test strip and get satisfactory effect.

TCR is one type of reactive power compensation equipment which is popular used in power system nowadays. Its precision of compensation affects the quality of electrical energy. As the data source, the data acquisition section's performance will impact the function of control system directly, so as to affect the compensation effect. The paper designs a suit of voltage measuring system applied in reactive power compensator TCR, which is based on the chip CS5460A, together with the 51 SCM. The paper particularly dissertates the hardware design structure of system and the software program, also presents the flow chart. Practice indicates that the system has the superiorities of simple circuit, high precision, good real-time character, low cost and so on, which implies that the system has high practical value.

This paper dedicated to investigate the integration of semi-active suspension and vehicle dynamics control system. Semi-active suspension (typically composed of a controlled damper and a passive spring) could improve the ride performance of vehicle by controlling the damper and spring. A vehicle dynamics control (VDC) system can enhance vehicle stability and handling in emergency situations through the control of traction and braking forces at individual wheels. A nonlinear control system is designed to coordinate interactions between semi-active suspension and VDC. A multi-body vehicle dynamic model is established in this paper, the multi-body vehicle dynamic model based on ADAMS can accurately predict the dynamics performance of the vehicle. The integrated controller for VDC and semi-active suspension is established according to the longitudinal motion, lateral motion and vertical motion of the vehicle. A fuzzy logic controller for VDC and a skyhook controller for semi-active suspension controllers are established using Matlab/Simulink software. The road roughness is crucial to vehicle vibration analysis. Thus, the co-simulation of ADAMS and Matlab/Simulink scenario is performed to demonstrate the effectiveness of the proposed controllers. The simulation results show that the VDC controller and the semi-active suspension controller are effective, and the integrated chassis control system can enhance both of vehicle handling stability and ride performance greatly.

The large scale enterprise information systems are often consisted of many subsystems or components. Coordination among subsystems or components is an important problem in building and integrating complex enterprise information systems. In general, there is no single architecture of information system that is appropriate for any enterprise, and there is no single coordination mechanism that is appropriate for any enterprise information systems. In this paper, organization structures and coordination mechanisms are discussed. According to the similarities of certain coordination problems in different enterprise information systems, this paper gives some coordination patterns for coping with special cases, including centralized coordinator, shared data spaces, peer to peer, flow, and hierarchy.

The paper introduces RC4 stream ciper which is widely used in the TLS/SSL protocol and several weaknesses in the algorithm of RC4. In order to enhance the security of RC4, the paper proposes a new pseudo-random bit generator, which is based on RC4. This improved RC4 has destroyed the foundation of many attacks on RC4 and has more internal states than RC4. The new algorithm is realized by software and the experimental results show that the output stream are random and it is faster than RC4.

Based on the mathematical model of electric power steering (EPS) system, an assist characteristic transfer function of EPS system is established in this paper. The steering wheel angle is taken as input signal and the steering column angle as output signal in the model. According to biological immune feedback mechanism, a control algorithm for steering column angle of EPS based on immune PID is proposed in this paper. Compared with the genetic PID algorithm, the simulation results indicate that the immune PID control algorithm can effectively improve response speed of EPS, shorten time up to the steady state value, enhance the efficiency of steering column angle tracking the steering wheel angle, and make EPS to have good performance of power steering.