An LPV fault tolerant control scheme using integral sliding modes

This paper introduces a new fault tolerant control scheme for linear parameter varying (LPV) plants incorporating ideas of integral sliding modes and control allocation. The inherent robustness properties of integral sliding modes are used in combination with the control allocation scheme to cope with a certain class of actuator faults/failures. The scheme automatically redistributes the required total control demand to healthy actuators based on estimates of their effectiveness levels. The closed-loop stability of the overall system is guaranteed throughout the entire operating envelope even in the case of total failure of certain actuators. Finally the efficacy of the scheme is tested in simulation by applying it to a benchmark LPV model of a civil aircraft.