Analysis and design of control system for aerodynamic missile with large impact angle

Coupling influences between missile's longitudinal channel and lateral channel are serious when the missile intercepts targets with large impact angle. In this paper, the coupling influences are deeply analyzed, including aerodynamic coupling and kinematic coupling. A new coupling compensation method with roll angle is advanced to weaken the main coupling factor. An overload controller is designed with Stochastic Robustness Analysis and Design (SRAD) method, considering the parameters change and nonlinear facts. Using the guidance law with impact angle constrains, the missile intercept targets with random angle from 0° to -90° under the designed controller. Simulation results for the 6 DOF nonlinear model of some missile indicate that the coupling compensation method is effective and the overload controller designed by SRAD is rapid and robust.