A Combined State Recovery Controller for Two Independent Asynchronous Sequential Machines

Jung-Min Yang and Seong Woo Kwak


Corrective control, Asynchronous sequential machines, Transient faults, Combined controllers


This paper presents a corrective control scheme that tolerates the adverse effect of transient faults in dynamics of asynchronous sequential machines. When a transient fault occurs, the machine undergoes unauthorized state transitions, which hinders the normal operation of the machine. In particular, this paper proposes how to design a combined controller that realizes fault tolerance for two independently working asynchronous machines, thereby reducing the size of control parts. The existence condition for the proposed controller remains the same as using a single controller for each machine. The design procedure for the proposed combined controller is analyzed in detail with illustrations.

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