ATC Automatic Test System Design Based On VXI Bus--The Design Of Fault Diagnosis System

For reducing test work, ATC automatic test system is constructed rationly with VXI bus technique to automatic test according to primary technology. This test system functions whole performance and index inspecting, and is used for manufacturing, military equipment checking and base maintenace of equipment. The second charpter gives a brief introduction of hardware and test software design of the whole ATC test system respectively, and simply illuminates test principle and technique by enumerating example. So far, ATC system has accomplished hardware configuration, index test and performance inspecting of special type equipment.Fault diagnosis is the important compositive part of the whole ATC system, which is completed based on automatic test hardware and software, meanwhile, perfects the test system. The fault diagnosis system fulfills fault diagnosis and orientation in virtue of artificial neural network and database technique. The system denotes knowledge with status space, manages repository and correlative database by use of DBMS, and speculate mechanism makes use of backward promulgate algorithm of three layer artificial neural network. The innovation of this system is that it accomplishs fault diagnosis and orientation by virtue of database and artificial intelligence technique, which makes the system more convenient and dependable in managing database and have good performance of expert system speculation and judgement; During the carrying of sample, the system gets sample by setting fault, not by waiting for the appearing of fault, which makes the system forcast fault and solve it in advance.This article is established in fault diagnosis research of automatic test, makes discuss and study about some pivotal techniques in software design of automatic test and fault diagnosis, including report forms printing, backward promulgate algorithm, database management, and etc. and also advances the author's experience and understanding during debugging. All in all, this article roundly reveals the author's rigorous thoughts and techniques during the whole fault diagnosis system design.