Dissipativity and Stability Recovery by Fault Hiding

This paper addresses the problem of dissipativity-based fault tolerant control (FTC) based on fault hiding approach. In particular, a static reconfiguration block (RB) is used for reconfiguration of faulty systems. Such block performs a loop transformation by inserting series, feedback, and feedforward gains to a system including plant, sensor or actuator faults. The proposed approach consists in recovering dissipativity and passivity conditions of a previously dissipative system, ensuring that the reconfigured system has the same supply function of the nominal system. Numerical examples illustrate how such approach can be used to recover the asymptotic stability by fault hiding even for nonlinear systems. Furthermore, LMI-based conditions for designing the proposed RB are provided for stability recovery for linear systems. Copyright (C) 2020 The Authors.