Research on secure control and communication for cyber-physical systems under cyber-attacks. (August 2019)

• Record Type: Journal Article
• Authors: Li, Wei; Shi, Yahong; Li, Yajie
• Is Part Of: Transactions of the Institute of Measurement and Control. Volume 41:Number 12(2019)
• Page Start: 3421
• Page End: 3437
• Publication Date: 2019-08
• Subjects: Secure control -- cyber-physical systems -- discrete event-triggered communication scheme -- fault tolerance -- attack tolerance -- co-design; Automatic control -- Periodicals; Measuring instruments -- Periodicals; Commande automatique -- Périodiques; Mesure -- Instruments -- Périodiques; 681.2
• DOI: 10.1177/0142331219826658
• Languages: English
• ISSNs: 0142-3312

Abstract

This paper investigates the co-design problem of secure control and communication quality for cyber-physical systems (CPSs) to solve unavoidable problems, in which both actuator faults and cyber-attacks occur in practical implementations of CPSs. Firstly, based on the discrete event-triggered communication scheme (DETCS), a system framework for active fault-tolerant and passive attack-tolerant control is proposed. Then, a model of a closed-loop CPS is established that integrates a triggering condition, actuator faults and cyber-attacks into a single uniform framework. Secondly, using the partition and definition of different delay functions, the appropriate Lyapunov functions are constructed based on the time-delay system theory, and design methods for a robust observer with passive attack tolerance for estimation of the state and fault, and an active fault-tolerant and passive attack-tolerant controller are developed in terms of linear matrix inequality. In this way, the co-design goal involving active fault tolerant control, passive attack-tolerant control and the communication network is achieved. Finally, a simulation experiment of a quadruple-tank is carried out to demonstrate the effectiveness of the proposed method.