Sliding mode based impact angle guidance law considering actuator fault

In this paper, a new continuous impact angle constraint guidance law in the presence of actuator fault is presented based on sliding mode control theory. The robustness and finite-time convergence of the basic guidance law is established using Lyapunov stability theory. For actuator compensation, an additional term is augmented in the original guidance law to guarantee finite-time stability of the closed-loop guidance system. Theoretical analysis and simulation results demonstrate the effectiveness of the proposed method.