摘要
无尾式飞行器是飞行器发展的方向,研究无尾式控制具有重要意义。研究了线性变参数系统的增益调度控制器的设计方法,采用多胞形进行增益调度,提出了一种简单实用的变参数顶点凸分解方法,该方法在保证系统稳定的情况下,确保系统达到最优性能指标。同时还充分考虑了系统的不确定性因素,利用线性矩阵不等式(LMI)对系统进行鲁棒控制器设计,大大减少了计算量以及对系统的约束,设计出了基于LMI的增益调度控制器,通过非线性仿真结果可以看出,该控制器在调节变量变化很大的情况下,使得系统在0.5s内收敛,而且超调量很小,论证了该方法在无尾式飞控系统中应用的可行性。
It is important to research the flight control system of tailless aircraft, which has been considered the future aircraft development direction. The gain scheduling method based LPV system was studied, and the polytope model was used to gain-scheduling. A simple but applicable method to convex decomposition was pmposcd. This decomposition has optimal performance with guaranteed stability. The uncertainties were considered fully, and the robust controller was designed using LMI, which can reduce the constraints and computation. The controller was designed based on LMI. From nonlinear simulation, it can be seen that the controller can control the tailless aircraft to convergence within 0.5s and with small overshoot when the scheduling variable has big variation, and the method was proved feasible in the tailless flight control system.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2009年第1期120-123,共4页
Journal of National University of Defense Technology
