倾转旋翼机多模型缝合技术研究  

Study on multi-model fusion of a 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国家重点实验室,江苏南京210016

出　　处：《飞行力学》2011年第3期24-27,共4页Flight Dynamics

基　　金：国家自然科学基金资助(60705034)

摘　　要：首先从研究倾转旋翼机的全量非线性飞行动力学模型入手,建立倾转旋翼机的非线性仿真模型,并提取其全包线飞行的配平模型;其次利用模糊缝合技术实现由有限线性配平模型拟合非线性模型,从而可以得到具有实时计算能力的近似非线性模型;最后通过对比缝合模型与非线性模型的操纵响应结果可知,二者具有良好的一致性,所建模型有效地提高了计算效率,为下一步实时控制系统的设计、仿真提供了基础。Firstly, in this paper the full nonlinear flight dynamical mathematical model of a tilt rotor aircraft was analysed and the nonlinear flight simulation model was established. The full envelope trim models were obtained by simulation. Secondly, the real time approximate nonlinear model was got by using the limited trim points linear model with the model fuzzy fusion methed. Finally, the responses about the fusion model and the nonlinear model were practical unanimity by relative analysis, which could refrain from calculating the nonlinear model for random flight points. The computational efficiency was increased effectively, and afforded favorable basis for multimodel control in future.

关 键 词：模糊缝合 非线性模型 操纵响应 

分 类 号：V212.4[航空宇航科学与技术—航空宇航推进理论与工程]