A Certain Type Of Computer Measurement And Control Of Servo Test System Design

Electro-hydraulic servo mechanism is an important part of helicopters, the integrity of it's function and state of it's performance has fatal influence on the safety and behavior of the aircraft, so it is necessary to test the product before application. This dissertation focused on the design of the computer aided test and control system of a certain product. This system is compatible to manual test, can be used to two series five types servo mechanisms testing processes.This test system is a computer aided test(CAT) system, developed in virtual instruments(VI) technology, has abundant interfaces and easy to use. The conversion of test status, testing and control, data acquisition and processing, displaying and saving are all carried by computer. This paper mainly studies the design of the oil source system, and the computer aided test and control system, including the software and hardware subsystems. Three kinds of circuit are developed for position transducers, force transducers and flow transducers. The control method of a positioning system is discussed in detail according to analysis, modeling and simulation. The feature of virtual instrument language CVI is also presented in this paper.This system has been approved to be a successful design by practical use.