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针对高超声速飞行器再入过程中模型参数不确定性问题,提出一种鲁棒自抗扰控制(ADRC)阻力加速度跟踪方法。该方法利用圆判据得到闭环ADRC跟踪系统所容忍的模型参数不确定性范围,进而可以根据工程应用中对鲁棒性的需求来设计控制参数。三自由度仿真结果表明,在考虑模型参数摄动情况下,跟踪系统不仅稳定而且响应品质良好。
Aiming at the uncertainty of model parameters in the process of reentry of hypersonic vehicle, a robust auto-disturbance rejection (ADRC) drag acceleration tracking method is proposed. The method uses the circular criterion to obtain the uncertainty range of the model parameters tolerated by the closed-loop ADRC tracking system, and then the control parameters can be designed according to the robust requirements in the engineering application. Three-degree-of-freedom simulation results show that the tracking system is not only stable but also has good response quality when the model parameters are perturbed.