Detection of actuator faults for continuous-time systems with intermittent state feedback

摘要

This paper considers the problem of detecting actuator faults on uncertain continuous-time systems, where the state can be measured only intermittently. Initially, we describe the class of faults which we want to identify, as those that create a state evolution that is incompatible with the model of the system. We then derive a necessary and sufficient condition, the verification of which allows us to detect the aforementioned inconsistencies. Relaxations are employed to make this verification computationally easier and an equivalent condition, in the epsilon-closeness sense, is obtained, through the solution of a boundary-value problem. We finally present simulation results that showcase the effectiveness of our proposed algorithm, in terms of speed and validity. (C) 2021 Elsevier B.V. All rights reserved.