高速再入飞行器的鲁棒自动驾驶仪设计

针对高速再入飞行器的自动驾驶仪设计问题,基于鲁棒参数化方法,采用特征结构配置和模型参考跟踪理论设计BTT飞行器姿态控制系统的鲁棒控制器,完成对于制导信号的快速跟踪。本设计的鲁棒镇定器是一个不随滚动角速度变化也无需切换的定常反馈镇定律,结构简单,便于工程实现。通过分析高速再入飞行器的特点,给出了简单可行的控制方案。将所设计的控制器应用于飞行器非线性模型进行了六自由度仿真试验。仿真时考虑了系统执行机构的时滞和饱和特性。仿真结果验证了所设计的控制器的有效性。

Robust autopilot design of high-speed reentry aircrafts

The autopilot design problem of a high-speed reentry aircraft is considered.The eigenstructure assignment approach based on the robust parameterized method is employed and feed forward compensators are designed based on the model reference theory to realize tracking of the overload signals.In order to simplify the autopilot system,a constant non-switching feedback controller,which stabilizes the system on the whole trajectory and doesn't vary with the rolling rate,is proposed.According to the specific features of the high-speed reentry aircraft,a simple and feasible control strategy is proposed.To validate the performance of the autopilot system,six degrees of freedom simulations are carried out.Particularly,the time delay behavior and saturation characteristic of the actuators are taken into consideration.The simulation results show the effectiveness of the method.