摘要
研究飞控系统特性,针对某型飞机纵向运动的参数摄动不确定性,为了提高控制系统的稳定性和优化系统的性能,采用基于线性矩阵不等式(LMI)的混合H2/H∞控制方法设计控制器,减小不确定性对系统的影响,以实现对系统鲁棒性能的要求,并将被控系统的闭环极点配置在预期的区域内,进一步保证系统具有良好的动态特性。通过实例仿真验证分析,系统不但满足了动态性能指标,且当系统参数不确定性在一定范围内时,控制器对系统仍能进行有效的控制,表明了控制器对一定范围内的参数不确定性具有较好的抑制作用,验证了设计方法的实用性与有效性。
In this paper,mixed H2/H∞ method based on LMI approach is designed for longitudinal model of an aircraft with parametric uncertainty,in order to satisfy the expected dynamic performance of the aircraft,as well as to place all the closed-loop poles in the desired region to achieve the robustness of the system.An example is provided to illustrate the effectiveness of the approach.According to the simulation,the dynamic performance of the aircraft is satisfied,showing the method capability of achieving the desired goal with parametric uncertainties.
出处
《计算机仿真》
CSCD
北大核心
2010年第11期152-155,共4页
Computer Simulation
关键词
飞行控制
区域极点配置
鲁棒性能
Flight control
Regional pole assignment
Robustness
