Passive Actuators' Fault-Tolerant Control for Affine Nonlinear Systems

In this brief, the problem of passive fault-tolerant control (FTC) for nonlinear affine systems with actuator faults is considered. Two types of faults, additive and loss-of-effectiveness faults, are treated. In each case, a Lyapunov-based feedback controller is proposed, which ensures the local uniform asymptotic (exponential) stability of the faulty system, if the safe nominal system is locally uniformly asymptotically (exponentially) stable. The effectiveness of the FT controllers is shown on the autonomous helicopter numerical example.