基于CMAC网络的飞行器再入标准轨道制导

Reentry Trajectory Guidance Design for Hypersonic Vehicles Based on CMAC Network

针对飞行器再入标准轨道制导方法中的参考阻力加速度跟踪问题,提出一种将CMAC网络与PID控制相结合的复合控制方案。该方案利用传统的PID控制器实现反馈控制,保证系统的稳定,并利用CMAC网络实现补偿控制,提高系统的抗干扰能力。三自由度仿真结果表明,在存在气动偏差和风场干扰等影响的情况下,该算法的跟踪精度与鲁棒性都有增强,终端精度和约束条件都得到了较好的满足。

A CMAC and PD combined controller is proposed for the reentry reference trajectory guidance to deal with the drag acceleration tracking task. The traditional PID controller is used to realize feedback control and stabilize the system. The CMAC network controller is utilized as compensator to enhance the control precision and restrain the disturbance. 3DOF simulation results show that the tracking precision and robust performance are both improved by this method with satisfactory terminal and procedure constraints, if the aerodynamic deviation or wind disturbance appears.