飞行器再入姿态双环滑模控制及其逻辑选择

应用滑模控制设计了一种飞行器再入姿态控制方法,这个控制器应用两环的滑模控制方案,可以获得对角速度及角度的同时跟踪并具有较好的鲁棒性和解耦性能。针对飞行器再入姿态的动力面与反作用混合控制的特点,运用优化控制选择配置算法把控制力矩指令配置为末端受动器的控制指令,分别由动力面与反作用致动器执行。再入姿态仿真验证了该方法的精度、鲁棒性以及解耦的跟踪性能及有效性。

Reentry Attitude Double-loop SMC of the Spacecraft and Its Logic Selection

A spacecraft reentry attitude control method is developed based on sliding mode control(SMC) theory.Utilizing double-loop SMC scheme,the controller provides robust,de-coupled tracking of both the angular velocity and the shuttle orientation angles.And pointing to the hybrid control characteristic of the aerodynamic surfaces and reaction control system of the spacecraft,allocating the control torque commands into the actuators such as the aerodynamic surfaces and reaction control system by using the optimal control selection allocation algorithm.Simulation of the spacecraft reentry attitude control demonstrates the robust,de-coupled tracking performance and its validity.