Department of Instrumentation and Control Engg., Sri Sairam Engineering College, West Tambaram, Chennai-600 044, Tamilnadu, India.
ISA Trans. 2011 Jul;50(3):443-53. doi: 10.1016/j.isatra.2011.03.001. Epub 2011 Apr 19.
In this paper, we propose an approach for achieving detection and identification of faults, and provide fault tolerant control for systems that are modeled using timed hybrid Petri nets. For this purpose, an observer based technique is adopted which is useful in detection of faults, such as sensor faults, actuator faults, signal conditioning faults, etc. The concepts of estimation, reachability and diagnosability have been considered for analyzing faulty behaviors, and based on the detected faults, different schemes are proposed for achieving fault tolerant control using optimization techniques. These concepts are applied to a typical three tank system and numerical results are obtained.
在本文中，我们提出了一种使用定时混合 Petri 网建模的系统的故障检测和识别方法，并提供了故障容错控制。为此，采用了一种基于观测器的技术，该技术可用于检测故障，例如传感器故障、执行器故障、信号调理故障等。考虑了估计、可达性和可诊断性的概念来分析故障行为，并根据检测到的故障，使用优化技术提出了不同的容错控制方案。这些概念应用于典型的三容水箱系统，并获得了数值结果。
