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本文用阻尼最小二乘法在频率域内拟配装有控制系统飞机的横向运动,确定其模态的等效参数.文中针对飞机横航向运动耦合较紧,引入控制系统后飞机模态特性变化的特点,采用多种等效系统的数学模型,通过拟配对比,从中得出了较好的又简单的横航向等效系统模型。并根据飞机横航向运动的特点,提出了拟配时初值选取的原则,拟配实践表明,初值选取原则是可行的,拟配效果较好.最后,将拟配得出的等效系统和高阶系统,分别在简易飞行操纵模拟器上进行人一机闭环操纵模拟试验,两系统的反应基本一致。
In this paper, the damping square least square method is used to control the lateral movement of the aircraft in the control system and the equivalent parameters of the modal are determined.In this paper, according to the tight coupling of the transverse movement of the aircraft and the change of the modal characteristics after the introduction of the control system , The mathematical model of many kinds of equivalent systems is adopted, and through the quasi-matching, a better and simpler equivalent system model of transverse direction is obtained. According to the characteristics of the aircraft’s lateral movement, the principle of selection of the initial value of the proposed allocation is put forward. The practice shows that the principle of initial value selection is feasible and the proposed effect is better.Finally, the equivalent system And high-level system, respectively, in a simple flight control simulator for human-machine closed loop control simulation test, the two systems basically the same response.