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在高超声速飞行器控制研究中,大空域大马赫数飞行造成的强耦合、高度非线性,影响控制系统的稳定性。为解决上述问题,在传统定量反馈控制理论的基础上,提出定量反馈和动态逆相结合的鲁棒控制方法,对高超声速飞行器纵向模态进行控制器设计。利用动态逆对系统非线性模型进行反馈线性化,将得到的线性模型作为控制的内环和定量反馈设计模板,设计外环系统的控制器和前置滤波器。通过计算机对设计的控制器进行仿真验证,结果表明,控制设计方法具有较好的控制效果,且比传统的设计方法在高频段具有更好的噪声抑制能力。
In the research of hypersonic vehicle control, the strong coupling and high nonlinearity caused by the large airspace flight in large airspace affect the stability of the control system. In order to solve the above problems, based on the traditional quantitative feedback control theory, a robust control method based on quantitative feedback and dynamic inversion is proposed to design the controller of the longitudinal mode of hypersonic vehicle. The feedback linearization was carried out by using the dynamic inverse system nonlinear model. The linear model was used as the control inner loop and the quantitative feedback design template to design the controller and pre-filter of the outer loop system. The simulation results show that the control design method has better control effect and better noise rejection than the traditional design method in the high frequency range.