飞行控制系统的输出反馈最优设计

 本文在频域范畴内,利用输出反馈方法论述了在二次型性能指标下多变量线性最优调节器的控制问题,通过把多变量系统的前馈解耦控制与最优控制结合起来,得到了最优控制解的频域形式。这种最优控制规律既可使系统的能耗和输出偏差综合最优,具有较好的抗干扰性,又可满足给定的时域性能指标。方法简单,求解方便,便于工程应用。作为例子,文中对某纵向飞行控制系统进行了最优设计。

AN OPTIMAL DESIGN OF FLIGHT CONTROL SYSTEM BY OUTPUT FEEDBACK

In this paper, the problem of multivariable linear optimal regulator with quardratic performance index is discussed in frequency domain by using the output feedback method.The frequency domain result of optimal control is obtained by combining feedforward decoupling control of multivariable system with the optimal control. Not only can this optimal control law make the loss of energy and the error of output jointly optimal, with a relatively strong disturbance resis tance, but also satisfy the specified performance index in time domain. The method is simple for use and convenient to engineering application. As a example, an optimal design is made in this paper for a vertical flight control system.