A discussion of fault-tolerant supervisory control in terms of formal languages. (2016)

• Record Type: Journal Article
• Authors: Moor, Thomas
• Is Part Of: Annual reviews in control. Volume 41(2016)
• Page Start: 159
• Page End: 169
• Publication Date: 2016
• Subjects: Discrete-event systems -- Supervisory control -- Fault-tolerant control -- Passive fault-tolerant control -- Active fault-tolerant control -- Post-fault recovery -- Fault-hiding approach; Automatic control -- Periodicals; Periodicals; 629.805
• DOI: 10.1016/j.arcontrol.2016.04.001
• Languages: English
• ISSNs: 1367-5788

Abstract

Abstract: A system is fault tolerant if it remains functional after the occurrence of a fault. Given a plant subject to a fault, fault-tolerant control requires the controller to form a fault-tolerant closed-loop system. For the systematic design of a fault-tolerant controller, typical input data consists of the plant dynamics including the effect of the faults under consideration and a formal performance requirement with a possible allowance for degraded performance after the fault. For its obvious practical relevance, the synthesis of fault-tolerant controllers has received extensive attention in the literature, however, with a particular focus on continuous-variable systems. The present paper addresses discrete-event systems and provides an overview on fault-tolerant supervisory control. The discussion is held in terms of formal languages to uniformly present approaches to passive fault-tolerance, active fault-tolerance, post-fault recovery and fault hiding.