不确定性无尾飞行器混合灵敏度鲁棒控制器设计

Design Robust Mixed-Sensitivity Controller to Uncertain Tailless Aircraft

无尾式飞行器由于其特殊的优点使其成为新型飞行器的发展方向,但由于其缺少尾翼,变得极不稳定,同时不确定性因素也比较多,对于控制器的设计是一个很大的挑战。在分析无尾式飞行器不确定性的基础上,将H∞混合灵敏度的理论应用到无尾式飞行器的滚动通道的控制上,并结合实际,提出了一种简单但有效的加权函数构造方式,同时利用Matlab鲁棒控制工具箱对所选的无尾飞行器进行仿真,通过仿真分析,验证了混合灵敏度理论在无尾式飞行器存在较大不确定因素时的可行性。

The tailless aircrafts are regarded as a developing way of the new type aircrafts because of its special advantages. They have more uncertainties and instability due to lack of empennage. It is a challenge to design controller for them. Applying H∞ mixed-sensitivity theory to control tailless aircraft＇s roll channel based on uncertainties analysis of tailless aircraft, a simple but efficient method was put forward to construct the weighting function, and simulation using Matlab Robust Control ToolBox. From simulation, it is proved that the mixed-sensitivity theory is feasible to the tailless aircraft when it has more uncertainties.