Метод тестового диагностирования линейных динамических систем

Abstract

Purpose: Developing a new method for test diagnostics of linear dynamic systems. Compared to the available methods based on using special test actions, this method uses mathematical models of a scalar dynamic system in the form of transfer functions and certain structures of communication between its units. Methods: The theory of linear control systems was used which helped to describe clearly and conveniently the process of test diagnostics. Results: A method was developed for test diagnostics of linear dynamic systems with given transfer functions of their links and a given structure of connections between them. Using the proposed diagnostic models of a linear scalar system, a test diagnostics procedure is built, based on dichotomous search for a defect, which allows you to not only detect the defect but also to localize the respective link. The procedure helped to build testers of two types, parallel and sequential, according to the way of tester implementation: the programmable implementation uses a sequential structure, while Simulink modeling uses a parallel one. Practical relevance: The method allow you to quickly and rather simply carry out test diagnostics of a scalar linear control system, having specified where the defect occured. In the article, it was done for two systems of the third order.