末端区域能量管理段约束控制技术

Constrained Control Technology of Terminal Area Energy Management

针对重复使用运载器(reusable launch vehicle,RLV)在末端区域能量管理(terminal area energy management,TAEM)段中存在的多约束问题,提出了一种TAEM段约束控制策略。通过俯仰角速率控制TAEM内回路,提高了控制系统的稳定性;设计了迎角和过载约束控制回路,在此基础上,采用动态约束的思想,实时进行约束控制回路的切换,保证了飞行的安全;并分别在常规控制策略和约束控制策略2种情况下进行了仿真验证。仿真结果证明:采用约束控制策略可以保证RLV迎角和过载不超出限制,可以保证最终的安全着陆。

For multi-constrained problem of reusable launch vehicle （RLV） in terminal area energy management （TAEM）, this paper presents a TAEM constrained control strategy. In order to improve the stability of the control system, pitch rate control is used in the TAEM inner loop. Then, design the angle of attack and overload constrained control loop. On this basis, the control system including dynamic constrain make the system safety by switching the control command. Finally, simulations are processed using normal and constrained control strategy. The simulation results show that： the angle of attack and overload does not exceed the limit using the constrained control strategy, and ensure the safe landing.