基于等效系统拟配的人-机闭环系统稳定性研究  

Research on stability of aircraft-pilot closed loop system based on matching of equivalent system

作　　者：李大伟[1] 徐浩军[1] 胡新江[1] 刘东亮[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《飞行力学》2011年第4期19-22,共4页Flight Dynamics

基　　金：国家自然科学基金资助(61074007)

摘　　要：对于现代带电传操纵系统飞机,其人-机闭环系统是非线性高阶复杂系统。针对带电传操纵系统人-机闭环系统稳定性问题,运用遗传算法在频域内对人-机闭环高阶系统进行了等效拟配,提出应用根轨迹法对拟配得到的低阶等效系统进行稳定性分析。仿真结果表明,用遗传算法进行等效拟配能够避免初值选择问题,拟配精度较高。所提方法能够考虑到驾驶员环节,并且能与驾驶员关心的模态结合起来,从而验证了该方法的可行性和有效性。The aircraft-pilot closed loop system which is constituted by an aircraft with fly-by-wire flight control system is a high order nonlinear system. Regarding the stability of aircraft-pilot system with fly-by-wire flight control system, this paper proposes a method of using the Genetic Algorithm （GA） to make equivalent matching of the air- craft-pilot system in frequency domain, then studying on the stability of lower order system by the root locus meth- od. Simulation results show that this initial value choosing problem of equivalent matching can be avoided by the GA and has a high precision. The method proposed can take the pilot loop into consideration, and fall together with motion modes which pilots really take care. Therefore the method brought forward above is feasible and valid.

关 键 词：人-机闭环系统 稳定性 飞行品质 遗传算法 等效拟配 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]