An algebraic criterion for detecting the fact and time a fault occurs in control systems of dynamic plants

Abstract

This paper proposes a new algebraic criterion for fault detection in control systems of dynamic plants; this criterion uses only the measurements of input and output signals and is based on the solvability condition for the problem of identifying the mathematical model of a dynamic plant. To estimate the proposed criterion, it is compared with a criterion based on analyzing prediction errors in solving a fault detection problem for a stabilizer actuator.