Adaptive High-Order Sliding Mode Based Fault Tolerant Control of RLV

An adaptive high-order sliding mode (HOSM) based fault tolerant control (FTC) algorithm is presented for reusable launch vehicle (RLV). We propose a time-varying barrier function based adaptive gain to handle unknown disturbances and actuator faults. The proposed algorithm could ensure the finite-time stability of the RLV attitude tracking system, without utilizing the upper bounds of uncertainties. The simulation results show that the proposed method has good performance.