Han Huayun, Yang Ying, Li Linlin, Ding Steven X
IEEE Trans Cybern. 2021 Feb;51(2):801-814. doi: 10.1109/TCYB.2019.2951534. Epub 2021 Jan 15.
This article addresses the performance-based fault detection (FD) and fault-tolerant control (FTC) issues for nonlinear systems. For this purpose, in the first part of this article, the performance-based FD and FTC scheme is investigated with the aid of the nonlinear factorization technique. To be specific, the controller parameterization for nonlinear systems is first discussed. The so-called fault-tolerant margin is introduced as an indicator of the system fault-tolerant ability. Then, the FD scheme aiming at estimating and detecting the stability performance degradation of the closed-loop system caused by the system faults is developed. Furthermore, to recover the system performance, the performance-based FTC strategy is presented. In the second part of this article, the design approach of the performance-based FD and FTC scheme is studied by applying the Takagi-Sugeno fuzzy dynamic modeling technique. The achieved results are demonstrated in the end by a case study on the three-tank system.
本文探讨了非线性系统基于性能的故障检测（FD）和容错控制（FTC）问题。为此，在本文的第一部分，借助非线性分解技术研究了基于性能的FD和FTC方案。具体而言，首先讨论了非线性系统的控制器参数化。引入了所谓的容错裕度作为系统容错能力的指标。然后，开发了旨在估计和检测由系统故障引起的闭环系统稳定性性能退化的FD方案。此外，为了恢复系统性能，提出了基于性能的FTC策略。在本文的第二部分，应用Takagi-Sugeno模糊动态建模技术研究了基于性能的FD和FTC方案的设计方法。最后通过一个三容水箱系统的案例研究展示了所取得的结果。
