飞机机械操纵系统建模

 本文综合利用了多自由度系统的模态分析方法、模型解耦及降阶方法、非线性系统数字仿真方法、系统辨识与参数估计技术及各种合理的计算方法,提出了杆系基本固有频率的工程计算方法、建立了杆系系统非线性近似模型、分析了系统的动态特性、最后给出了杆系系统的等效线性模型并讨论了各种主要参数和操纵品质之间的关系。 本文的模型解耦部分得到空测报告的证明、等效线性模型结构在某型操纵系统试验中得到证实。本文所讨论的分析方法适用于一般多自由度机械系统的动态研究。

MODELING OF THE AIRCRAFT MECHANICAL CONTROL SYSTEM

The mode analysis method for multi-degree-of-freedom system, model uncoupling and order reduction method, the digital simulating method for nonlinear system, system identification and parameter estimation techniques and various available calculating method are synthetically used in this paper, to present the engineering calculating method for the fundamental frequency, establish the nonlinear approach model of the mechanical system and analysis the system dynamic characteristic, finally, give the equivalent linear model of the mechanical system and discuss the relation between various major parameters and handling quality.In reference to the model uncoupling part, it has been proved by the report of flying test. The structure of equivalent linear model have been demonstrated by the experiment of a control system.The analysis method of this paper may generally be used to the dynamic analysis for multi-degree-of-freedom mechanical system.