Applied Mechanics and Materials Vols. 423-426

Abstract: This design is a basic method for testing spring fan wheel assembly and steel cable tension control system. PLC is used as logic control core. Stepping motor and magnetic powder braker is used as an executive element. The constant tension control of the running process of the system is completed. The fuzzy control process of PID system includes two parts of tension loading and damping loading. The method of modular software is used to make the program structure clear.

Abstract: In order to meet the real-time performance of the full software CNC system, the full software CNC based on RTLinux is designed. Linux+RTLinux system is used as development platform, the timer parameter is changed by the method of hardware interrupt, and the real-time requirement of the CNC system is solved. The idea of modular design is used on CNC system to divide the function module, and the software design of the full software CNC system based on RTLinux is completed. C language is used as the main development language, the development of functional modules of the system management layer and the control layer is realized. Linear, circular interpolation function of CNC system can be realized.

Abstract: It is difficult to establish the precise mathematical model of the outlettemperature of hot-blast stove in the real manufacturing, for the control system ishunting system, with uncertainty, time variation, and coupling. So it will be moredifficult to guarantee the effort of control, based on the control algorithm of precisemathematical model. Aiming at these problems, a new predictive control strategywhich can quickly suppress disturbances has been provided by this paper. Thestrategy is based on the idea of control of dynamic matrix control, and combinesdynamic matrix control and the advantages of both time optimal control. It is proved bythe simulation result that this strategy acts a good effect on the outlet temperaturecontrol of hot-blast stove and will quickly suppress the interference.

Abstract: Donaxi is a prototype to improve their different capacities in the area of service robotics. This paper describes the functional architecture design and the different modules that integrate it of the service robot Donaxi of UPAEP. Novel results are presented here in the area of face recognition; we propose the Hybrid Algorithm to Human-Face Detection and Tracking Unrestricted and Identification of People on the Floor Due to a Fall or Other Accident. The robot Donaxi is used as a vehicle for research in control of movement and human-robot interaction. The at Home League of RoboCup provides an ideal tested for such aspects of dynamic in motion indoor, skills to manipulate objects, aptitudes to intergesticulate with the persons in natural language and more. A modular software architecture as well as further technologies have been developed for efficient and effective implementation and test of modules for sensing, planning, behavior, and actions of service robots.

Abstract: In conventional Electrical Discharge Machining (EDM), the speed and accuracy are limited by probability and efficiency of the electrical discharges. To improve the machining speed and accuracy, we developed a high-speed, high-precision, 3-DOF controlled local actuator. For the actuator, a voice coil motor type of magnetic bearing having a positioning stroke of a few millimeters is used to control the motion of an electrode in the thrust direction in order to speedily maintain a suitable distance from the workpiece. Moreover, two piezoelectric devices having high response speed and high precision are used to achieve the vibration of the electrode in the radial directions to immediately remove the debris between the electrode and the workpiece. The positioning performance of the actuator was evaluated through experiments, and the experimental results show that the actuator possesses a positioning resolution of the order of micrometer, a bandwidth greater than 120Hz and a positioning stroke of 2mm.

Abstract: Track irregularity is one of the most important aspects of the suspension control performance impact in maglev transportation system (MTS). Due to the track irregularity phenomenon of suspension system, the Fuzzy PID(F-PID) control is unable to accurately track irregularity of track changes. Based on the qualitative analysis to MTS, through modifying conventional F-PID controller, the article establishes Fuzzy Immune PID(FI-PID) Controller based on the biological immune system theory. The control strategy designed nonlinear P controller, using the immune algorithm of on-line adjustment of P and the fuzzy control approximating the nonlinear function of the immune P control parameters and the fuzzy control designed the ID controller for adjusting the parameters of I and D for enhancing the robust performance of the suspension system and adapting to the change of track irregularity. Simulation results show that the FI-PID control is confirmed more effectively to realize tracking compared with F-PID, faster response speed, more simple structure, easier operation for the track interference and load disturbance of the suspension system. This provides a very good way to solve the interference problem of orbit of the maglev transportation system.

Abstract: The intelligent controlling system of intelligent building can apply Internet of Things (IoT) technologies for creating various controlling operations. The aim of this paper is the development of an intelligent monitoring system of intelligent building based on IoT. We introduce the working principle of the monitoring system, the hardware platform as well as its software collectivity frame. In addition, some key technologies for implement the monitoring system are described. The system can carry out various functions, such as fault detection, data processing, storage and alarming of the operating status parameters, querying history data, tracing real time instances by means of acquiring the operating status data from various testing sensors and the like. It also can record various types of operating parameters and send them to control platform by network. The system could effectively solve the problem of the monitoring and management of the operation tasks. Consequently it could greatly improve the efficiency of the management and controlling of the intelligent building.

Abstract: The electro-hydraulic proportional control system of the rig rotary mechanism was designed, and the work principle and system structure were introduced. On the bases of analyzing the characteristics of PID control algorithm and Fuzzy control algorithm, the design and research were carried. Simulation experiments show that the Fuzzy - PID algorithm effectively improves the control performance of the control system, and has a good environmental adaptability.

Abstract: The key technology of controlling intelligent racing car is speed control. Currently contestants mainly employ the experience of control algorithm to control the speed. Intelligent car modeling and theoretical analysis of the algorithm will help to improve the controlling effect. This paper, on the basis of mathematical modeling of the intelligent car and simulation comparison, sums up the advantages and disadvantages of the algorithms, and finally accomplished the algorithm. The research provides the theory basis and experimental reference for improving controlling of intelligent racing car.

Abstract: A mathematic method of ensuring motor-based photoelectric tracking instrumentation work high accurately was introduced, the SCA100T inclinometer was settled under the base, and examine plane of base real-timely. The inclinometer output analog signals and transmit it to AT89C51 through A/D converters, and AT89C51 output digital signals and transmit it to PC through RS-232. The PC convert signals of inclinometer into angle values of horizontal axis and vertical axis and transmit the values to main controlled system of photoelectric tracking instrumentation, the controlled system change the angles of horizontal axis and vertical axis. The CAD model was built and simulated with virtual prototype technology .Analysis and simulation proved that the mathematic method could keep tracking precision of motor-based photoelectric tracking instrumentation.