Applied Mechanics and Materials Vols. 727-728

Abstract: The derating control strategy for motor stator temperature is a very effective protection measures. It not only can make better use of motor ability but also can satisfy the requirement of the vehicle. This paper presents a derating control strategy based on the temperature of stator winding ends since it is the highest temperature point from the simulation results. The motor stator temperature is divided into several regions applied with the various derating control rules. To limit the peak phase current instead of the torque is proposed to inhibit the temperature rise especially in the field weakening region because a large extra demagnetizing current is required in this region.

Abstract: The design of output power adaptation method is applied to ultrashort wave apparatus which cooperate with output power collection system to make the adaptation work automatically. Three methods, which are approximation method, global test contrast method and improved approximation method are put forward, and fully experiment was executed. As a result the approximation method is the most appropriate, which could achieve the function of automatic detection and adaptation, and real time tuning in the treat process. The method improve the efficiency of energy transfer, at the same time enhance the treatment effect and make the machine more intelligent and convenient.

Abstract: This paper deals with the adaptive control design of stochastic nonholonomic system with uncertainties. The state-input scaling technique, stochastic Lyapunov-like theorem and back-stepping approach are used to design the feedback controller. The controllers guarantee all states of the closed-loop system are largely asymptotically stable in probability, In order to make the state scaling effective, a new switching control strategy based on the output measurement of the first subsystem is employed.

Abstract: This paper introduced the understanding of the concept of smart micro-grid in domestic and international authority. It pointed out that micro-grid was an effective form to achieve active power distribution in intelligent grid and an important part of the intelligent grid. It summarized and discussed the theory of intelligent micro-grid control. [1]It divided control strategy into the follow of grid control strategy and the formation of grid control strategy. Each class contains an interactive and non-interactive control idea at the same time. It has given a clear definition and criteria for judging and proposed future direction of the intelligent micro-grid control strategy.

Abstract: With the rapid economic development of the times, modern electrical energy to protect the system design process, by means of the application of PLC technology, not only to ensure that the motor is running with a certain degree of security and reliability, but also to achieve the motor energy conservation and protection, thus promoting the development of China's energy-saving industrial construction.

Abstract: This paper introduces the developing course of auto sensor and impetus, automotive electronic system in various sensors practical level, gives the best technical index, and the current sensor in the application of automotive electronic control system, and shows the development trend of the automotive sensors and the forecast, points out the development direction of modern sensor technology is integrated and intelligent, likely has a huge market share in the future several kinds of new sensors, and finally the development of the automotive sensors are described briefly and the market forecast.

Abstract: This article to cancel after the mechanical connections between steering wheel and steering, wire control steering system security and reliability problems, put forward on the basis of the analytical redundancy software sensor method of wire control steering system. In order to solve the compared with the traditional steering system in terms of reliability and safety of the problems of structural changes, the wire control steering system of the main sensor fault diagnosis methods are studied. In wire control steering system associated with the vehicle dynamics model is established under the premise of hypothesis testing to double adaptive fading Kalman filtering technology as a platform, combined with according to the working state of each sensors to determine fault feature vector, to build the main sensor wire control steering automobile fault diagnosis method of residual error threshold. For fault diagnosis of automobile EPS sensor, the BP neural network is put forward to EPS sensor for auto are introduced in the fault diagnosis. For large-scale wireless sensor networks (WSN), reduce the fault detection accuracy, and larger load of communication problems, according to the spatial and temporal correlation characteristics of sensor nodes, proposes a distributed sensor fault detection algorithm based on cluster. These algorithms for sensor fault detection is of great significance.

Abstract: The article describes three usual manners and introduces about one Siemens S7-200PLC’s closed loop control system how to realize the PID , the principle of the PID digital controller, how to use the PID digital controller, an example about how to program with it, and how to convert the input-output variable.

Abstract: This paper is aimed to establish to car networking as the foundation, a new traffic information service system in large data environment, the system is built based on vehicle network, meaning lies in providing the expressway traffic safety early-warning information services, further improve the quality of service of freeway traffic warning information and intelligence level. In this system, also conducted a small scale experimental validation, test showed that the effect of new application of traffic information service system is good. The system helps to ensure transportation safety and efficient operation for car, Internet users more traffic information service of intelligent and personalized.

Abstract: In order to realize monitor and control multiple fuel cell group, design a PEMFC monitoring and control system. The system uses LabVIEW as the computer software platform. By calling the USBCAN card’s driver, LabVIEW realize the communication with CAN bus; By connecting with each data acquisition and control module,the CAN bus can realize data acquisition and hardware control, so as to realize the monitoring and control of the fuel cell system by the computer.