Influence of Seeker Disturbance Rejection and Radome Error on the Lyapunov Stability of Guidance Systems

摘要

This study analyzes the effects of disturbance rejection and radome error on the stability of guidance systems. First, disturbance rejection rale transfer function (DRRTF) models are established. Second, the Lyapunov stability of a proportional navigation guidance system is proposed. The passivity theorems are introduced for the analysis of the Lyapunov stability of the nonlinear time-varying system. Finally the influence of the different DRRTF models on the stability of the guidance system is analyzed by mathematical simulations. The simulation results indicate that the stable boundary of the guidance system varies and its tolerance to disturbance differs significantly for various disturbance torque types and radome slope.