Applied Mechanics and Materials Vols. 427-429

Abstract: It describes the application and development prospect of mechanical automation technology, reviews the development history of mechanical technology and looks our country mechanical automation in the future, proposes the reference of foreign experience in mechanical automation technology, suggests the priority and development direction to Chinas low cost of mechanical automation technology.

Abstract: Analyse the cause of fault in CNC Machine, research the corresponding solve scheme, and to realize the state can monitor equipment operation, improve equipment reliability, the development set of machine condition monitoring, fault warning, fault diagnosis and troubleshooting as one of the intelligent security system. Based on the CNC machine intelligence support system research, design, introduces the key technologies and methods. Screw lift state of motion monitoring, for example, trend analysis exercise state, intelligent fault diagnosis, in order to achieve protection of the intelligent CNC machine tools to verify the practicality of intelligent security systems.

Abstract: On the basis of the autopilot control principle and the STM32F103RBT6 controller, an tracking autopilot for the leisure yacht was designed with manual steering and automatic steering function in this paper. The schematic circuit design and software design were detailedly described. Practical application confirmed that the autopilot has high reliability and good steering performance.

Abstract: For solving the problem of non-silicon MEMS assembly, the framework of Modular Desktop Micro Assembly System (MDMAS) is proposed, the fundamental principles and functional modular partition method of which is described in this paper. Based on it, the structure-capability correlation matrix and structure autocorrelation matrix are established, and the multi-objective optimization design model is constructed. In addition, GA (genetic algorithm) is introduced for best solution searching, and the proposed design method is validated

Abstract: This paper introduces the braking system scheme of low floor light rail vehicle, applying the regenerative braking and magnetic track brake, realizes service braking, emergency braking, parking brake and holding brake, also adjusts the braking force according to the load change.

Abstract: This paper describes the design of a vehicle dynamics control system for improving handling and stability of electric vehicle. A vehicle with this control system can facilitate good handling performance under normal operating conditions and enhance stability under critical conditions. A feedforward and a feedback controllers are employed to make the vehicle follow the reference yaw rate based on a non-linear 5DOF vehicle model under normal operating conditions. When the tire tends to reach physical limit, the reference value will be modified with lateral acceleration feedback. Finally, simulation is conducted under several standard maneuvers and the results verify the effectiveness of the proposed control system.

Abstract: A fault tree model of the electric hydraulic power steering controller has been built and the minimum cut sets leading to the fault of system has been found out. Then, the method of count reliability prediction is used to get the failure rate of each basic event and the type of failure distribution. We use MATLAB to get the top event probability and the possibility importance and relative importance of each basic event. Lastly, MATLAB, based on Monte Carlo simulation, is used to make the simulation of fault tree model accurate and to calculate reliability index. The accuracy of this method is verified perfectly by calculating. Especially for complex system, this method of reliability analysis is of great significance.

Abstract: As the scale of network become larger and larger together with node numbers, the traditional way to manage the network becoming more and more energy-wasting. In order to improve the performance of the network equipment, we figured out a method that can reduce CPU scheduled frequency thus resulting in a decrease in power consumption.

Abstract: This paper puts forward a wearable jacket concept, which combines sensor, fabric cable and flexible circuit board , to achieve synergies, dynamic monitoring of multiple physiological parameters in daily life and working environment. It has the characteristics of physiological signal detection, signal extraction function, and using the Bluetooth technology to realize data backup, to facilitate the further analysis, It can also use the communication equipment with Bluetooth function, remote medical services and other functions.

Abstract: The paper addresses performance analysis of discrete-time systems with time-varying delay of value bounded in a known interval. A set of sufficient LMI conditions is obtained from using the Jensen inequality to ensure asymptotical stability and-norm bounded by a specified value. The delay partition technique is exploited further to reduce the conservativeness induced by the Jensen inequality treatment. Simulation results show the benefit of the used delay partition approach.