倾转旋翼机模型缝合鲁棒控制律设计  

Design for Model Fusion and Robust Controller of Tilt Rotor Aircraft

作　　者：郭剑东[1] 宋彦国[1] 夏品奇[1] 

机构地区：[1]南京航空航天大学直升机旋翼动力学重点实验室,南京210016

出　　处：《南京航空航天大学学报》2011年第3期393-398,共6页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(60705034)资助项目

摘　　要：从研究倾转旋翼机的飞行动力学模型入手,通过引入模型缝合的思想,利用非线性的方法实现由有限固定线性模型拟合任意工作点处的模型响应,提高了倾转旋翼机飞行动力学计算的实时性,并得到多模型控制的模型集;其次基于规范互质分解理论、H∞回路成形设计技术对多输入多输出系统进行通道解耦控制研究,针对不同飞行工况的工作点分别设计H∞回路成形控制器。最后,采用加权求和的控制策略实现控制律的平滑切换,通过仿真验证了设计的多模型控制系统具有良好的控制能力。The dynamical mathematical flight model of unmanned tilt rotor aircraft is established.The model fusion concept is adopted and the all equinoctial points responses are obtained by using the nonlinear method based on the limited trim points linear model.Therefore,the resolution of the tilt rotor flight dynamics and a multi-model sets are obtained.Furthermore,the study of the rate decouple of MIMO system based on the normalized coprime factorization and H-infinity loop shaping approach,the H-infinity controller is designed for different flight modes,respectively.Finally,the control law is soft-swithed by using the weighted sums of the controlled quantity.The simulation results demonstrate that the presented control system is effective by the robust controller.

关 键 词：模型缝合 多模型控制 回路成形 鲁棒性 

分 类 号：V212.5[航空宇航科学与技术—航空宇航推进理论与工程]