The Research And Design Of PC's Measurement And Control System For The Electric Ergograph

It is more lagging status that testing devices are used for efficiency of transmission equipment in many company and laboratories of university. Electric power ergograph is a load or device of absorbing power, which mainly is used of measuring power for middling torque. It has much merit that controlling structure is simple, and the torque response of system is rapid and has no overtaking melody, and electrical energy can inpour electrified wire netting by returning unit. At present, the electrical control system that were manufactured in 1980's is however being used for a part of efficiency experiments in laboratory. Because this system has many problems in use and low testing reliability, it must be reconstructed. The topic is advanced under this background.This paper, on base of analyzing and comparing the correlational measure and control product of domestic home and overseas, achieves real-timely inspecting and measuring every parameter of ergograph with more advance technology of computer measure and control and a method that software can achieve the function in substitute of complex hardware circuit. This computer measure and control system of electrical power ergograph not only possesses abroad adjustability and flexibility, but also enhances the reliability and real-time charter of system. On the running theory of electrical power ergograph and the basic control theory basis, this paper expatiate on the mathematic model and modulating speed of ergograph, and expounds the principle and ways of design of hardware and software for measure and control system, and describes the hardware and software with some frames and interfaces, and importantly recommends the way of designing software. This paper's software mainly includes data collection, data manager, interface design and output of control variables. It introduces synchronously a scheme that software covers for some typical magnifying, filtering wave and count circuit in hardware circuit such as fuzzy-PID controller, filter program, which greatly simplify hardware and reduces cost and enhances the reliability and real-time charter of system. The paper makes programs for software design with general high language VC++6.0 and simulates for control system by MATLAB 6.1, and avoids using costly professional development software in price.Via the work of this paper, it is feasible that the measure and control system can testand control every parameters of ergograph by applying computer measure and control technology. The simulational result of system indicates the tracking is good. On base of doing more perfectly, the system will be used in automobile, motorcycle and testing field of transmission. It is important significance that detects and controls measuring power with ergograph.