末段直接力姿态控制拦截弹的一种侧向稳定回路设计

Autopilot Design for an Interceptor with Lateral Thrust Attitude Controller in Terminal Phase

针对采用侧向直接力姿态控制的拦截弹,设计了一种工程上比较可行的侧向直接力姿态控制方式的自动驾驶仪。首先,将侧向直接力发动机组看作一个离散的"鸭式"舵,进而对弹体进行线性化,得到弹体的传递函数;然后,在传统三回路增稳自动驾驶仪的基础上通过增加一个前馈通道的方式来设计直接力侧向稳定回路;最后,通过仿真验证了该种自动驾驶仪能够显著提高导弹的快速性。

A lateral autopilot is designed, which is feasible in engineering, for an interceptor with lateral thrust attitude controller. First of all, the airframe is linearized to develop the airframe transfer function via regard lateral thrust attitude control motor system as a discrete canard actuator. Then, a feedforward chan- nel is added on the traditional three loop autopilot to design the lateral autopilot. Finally, the simulation result proves that the dynamic response characteristic of the interceptor can be improved by using this autopilot.