Prescribed-Time Fault-Tolerant Control of Uncertain Linear Time-Varying
Systems by Smooth Linear Time-Varying Feedback
Abstract
In this paper, the prescribed-time fault-tolerant control for multiple
input multiple output (MIMO) linear time-varying (LTV) systems is
investigated. Both uncertain lexicographically fixed and
non-lexicographically fixed LTV systems with precisely known models have
been considered. By leveraging the special structure of controllable
canonical form and employing the properties of the parametric Lyapunov
equation, a global prescribed-time fault-tolerant controller is
designed. By choosing a suitable Lyapunov-like function, it will be
demonstrated that the state converges to zero within the designated
time. In addition, the designed controller is bounded and maintains a
linear, concise and smooth form. Ultimately, the effectiveness of the
controller is verified through the simulation of the elliptical orbital
rendezvous system.