控制系统可诊断性的内涵与研究综述

Connotation and Research Status of Diagnosability of Control Systems: A Review

作为表征控制系统故障诊断能力的属性,故障可诊断性揭示了故障诊断深层次的内涵.将可诊断性分析纳入控制系统与诊断方案的设计环节,可以从根本上提高系统对故障的诊断能力,为研究故障诊断提供新的思路.本文分别从可诊断性的内涵、研究现状以及潜在发展趋势三个角度系统地对可诊断性进行分析.首先,从定义、影响因素、与已有概念的关系以及应用四个方面剖析了控制系统可诊断性的内涵和研究意义.其次,分别从可诊断性评价与设计两个方面对可诊断性的研究现状进行分析.最后,通过对可诊断性已有成果进行总结归纳,探讨了可诊断性研究存在的不足以及未来发展的趋势.

As a property describing fault diagnosis ability of control systems, diagnosability reveals deep insight into fault diagnosis. The fault diagnosis ability can be fundamentally improved by incorporating diagnosability analysis into the designs of control systems and diagnosis programs, which provides a new way for the study of fault diagnosis. To systematically analyze the diagnosability, the connotations, research status and potential research tendencies of diagnosability are discussed. First of all, the concept and research significance of diagnosability are summarized from four sides, definition, influence factors, relationships between diagnosability and other concepts, and applications. Moreover,the current research status of diagnosability is discussed in terms of diagnosability evaluation and design. Finally, the deficiency and prospects of diagnosability study are predicated based on existing results.