Application of Finite Time Integral Sliding Mode to Guidance Law Design

Abstract

In this work, a new nonlinear guidance law with finitetime convergence considering control loop dynamics is developed to intercept highly maneuvering targets. The approach is based on integral sliding mode combined with finitetime state feedback control. Since terminal guidance process occurs in a short time, the lineofsight (LOS) angular rate should converge to zero in a finite time. The proposed guidance scheme successively guides the LOS angular rate to converge to zero in a finitetime, and stability and robustness of the new guidance law are demonstrated by means of Lyapunov stability theorem. Threedimensional simulation results demonstrate the performance of the proposed design procedure.