earticle

영어

This paper researches fault diagnosis and dynamic fault-tolerant control methods for a
class of discrete system with measurement noises and multiple transfer/measurement delays.
Different from the existing results which regard the transfer delays at the two ends of systems
as an input delay, this paper simultaneously considers the transfer delays in input and output
ends of systems. Different from the existing fault-tolerant control methods which don’t
consider and use the prior knowledge for faults, this paper considers the fault tolerant control
approach by using the prior knowledge for faults. Furthermore, a dynamic fault-tolerant
controller is derived which is composed of two compensators. Then, in order to solve the
physically unrealizable problem of fault-tolerant controller, a reconstruction method is
proposed to diagnose fault and reconstruct system information by structuring a servo fault
estimator. Simulation results demonstrate the effectiveness of the proposed approaches.