Abstract
This paper addresses the fault tolerant control (FTC) issue of switched systems by using a newly proposed concept named “ generalized separation principle ” (GSP), which allows us to design separately the three elements: the individual mode observer, the individual mode controller, and the switching law, and thus greatly facilitates the design in engineering. Sufficient fault recoverability conditions as well as fault diagnosis (FD) and FTC design procedures are provided. Moreover, “ semi-GSP ” and “ constrained GSP ” are further developed. These new concepts help to provide a framework for observer-based FD and FTC of switched systems. It shows that the FTC goal can be achieved even if only some or no mode of the switched system has available individual FD and FTC schemes. The theoretical results are further applied to the highly maneuverable technology vehicle to illustrate their efficiency and applicability.
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