Fault-Tolerant Control of Switched LPV Systems: A Bump less Transfer Approach

For switched linear parameter-varying (LPV) systems with possible actuator failures, the parameter-dependent multiple piecewise Lyapunov function is constructed to handle the H-infinity bumpless transfer fault-tolerant control problem. First, a generalized bumpless transfer concept is presented for switched LPV systems to describe the transient performance, for which only the local bumpless transfer condition is required. Second, an event-triggered switching law, depending on the system states, external parameters, and dwell time, is designed to ensure a time span among adjacent switchings. Third, a solvability condition of the H-infinity bumpless transfer fault-tolerant control problem is developed. A family of time-driven switching controllers with bumpless transfer constraint and fault-tolerant requirement are also designed. Finally, an application example of an aero-engine is given to verify the effectiveness of the developed methods.

Automated summary

This paper investigates the construction of parameter-dependent multiple piecewise Lyapunov function for switched linear parameter-varying (LPV) systems with possible actuator failures, to handle the H-infinity bumpless transfer fault-tolerant control problem. By introducing the generalized bumpless transfer concept, designing an event-triggered switching law, and developing a solvability condition for fault-tolerant control problem, a family of time-driven switching controllers satisfying the bumpless transfer constraint and fault-tolerant requirement is formulated.