%0 Journal Article
%T System Faults Testability Based on Observabal Concept<br>基于可观概念的系统故障可测性研究
%A Li Yan
%A Tong Shibai
%A <br>李艳
%A 童诗白
%J 自动化学报
%D 1990
%I 
%X How to determine the best test-points in faults diagnosis of dynamical systems is a very important problem and it is the main content of testability design. This paper solves this problem by showing that the poorest testability is in the direction of eigenvector associated with the smallest eigenvalue of observability matrix. Added new tests in this direction are shown to improve the testability, and the best possible testability is that all eigenvalues are equal. An example is given to illustrate how to select the test-points in faults diagnosis of analog circuits.
%K Fault diagnosis
%K testability
%K dynamic systems<br>故障诊断
%K 可测性
%K 动态系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=F17E1E29ACE982D549467314AE7BF110&yid=8D39DA2CB9F38FD0&vid=7801E6FC5AE9020C&iid=38B194292C032A66&sid=4E6F5C60B72D9B1C&eid=7979125BBE749348&journal_id=0254-4156&journal_name=自动化学报&referenced_num=1&reference_num=1