An Asynchronous Intermittent Control Methodology for Cyber-Physical Systems Under Dynamic Actuator Faults

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Abstract
In this article, a boundary-dependent asynchronous intermittent methodology is proposed to address the optimal cooperative tracking control issue of cyber-physical systems. Different from most works on intermittent control, this intermittent methodology allows each agent to arrange operation time and non-operation time based on their actual control requirements. Within the proposed asynchronous intermittent framework, the real vector space is partitioned into three distinct sub-regions via rest and security boundaries to monitor the error states of individual agents. Then, a new asynchronous intermittent mode is introduced to dynamically allocate operation and non-operation time based on these real-time error states. By developing a resilient fault management framework, the actuator outage behaviors are avoided. Based on this, dynamic fault-tolerant control strategy of cyber-physical systems under asynchronous intermittent scheme is designed, under which the optimal tracking cooperative control can be realized. In contrast to conventional synchronous intermittent frameworks, the proposed boundary-dependent asynchronous intermittent methodology dynamically tailors the operation and non-operation time of individual agents according to specific control requirements. Therefore, it enhances the tolerance of cyber-physical systems for non-operation time and reduces communication frequency. Finally, numerical simulations are provided to verify the effectiveness of the proposed theoretical findings.
Funding Information
  • National Natural Science Foundation of China (61972062)
  • National Natural Science Foundation of China (62306060)
  • National Natural Science Foundation of China (62506062)

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