Abstract:

In order to intercept targets with high speed in high altitude accurately, a three-dimensional head pursuit guidance law considering uncertain dynamic characteristics for missiles with blended lateral jets and aerodynamic control is researched. The dynamics model of rotating missiles with blended lateral jets and aerodynamic control is simplified by linearization, and based on aerodynamic control, continuous lateral jets control is designed, and then it is discretized, which avoids the complicated control allocation problem. According to the kinematic model of threedimensional head pursuit guidance and the dynamics linear model with uncertainties of missiles, the system is separated into a slow subsystem and a fast subsystem using time-scale separation, and the robust dynamic inversion controls of the slow subsystem and the fast subsystem are designed separately by applying the robust control method based on the Lyapunov stability theory. Thus, the three-dimensional head pursuit guidance law considering dynamic characteristics of the uncertain hybrid control system is obtained. The simulation of single channel control and double channels control are done to show the accuracy and effectiveness of the proposed method.