【摘要】 飞机操纵系统传递飞行员的操纵指令,是完成飞行任务的直接保证。而实际的飞机操纵系统由于制造、装配等原因,不可避免地会存在间隙。传动机构之间的间隙将导致操纵系统控制精度和传递效率降低,进而影响飞机的飞行品质。为了研究间隙对操纵系统动态特性的影响,建立间隙的非线性接触模型,并采用修正的库伦摩擦模型描述间隙的摩擦作用;建立含间隙的飞机驾驶舱操纵系统的微分方程,并在Matlab/Simulink中进行仿真。仿真结果与该操纵系统动态特性的实验结果吻合,表明该模型可用于飞机操纵系统设计中间隙影响规律的分析,在此基础上研究单个间隙对系统动态特性的影响,并比较同样的间隙值在不同位置的影响差异,以指导飞机操纵系统的优化设计。更多还原

【Abstract】 Aircraft control system transferring the pilot’s manipulation instructions can guarantee the task success. The clearance is inevitably existed in the actual aircraft control system due to the manufacturing,assembly and other factors. The clearance between the transmission mechanism would affect the precision and efficiency of control system,thereby affecting the flight quality. In order to study the influence of clearance on the aircraft control system,nonlinear contact model of clearance is established though the modified Coulomb friction model to describe the friction effect of clearance. Based on the model,the differential equation describing the aircraft control system effected by clearance is derived,and is simulated in the Matlab / Simulink platform. The simulation results are verified by the experiments,and the model built here can analysis the influence law of clearance of aircraft control system,on that basis,to study the influence of a single clearance on dynamic characteristics of the aircraft control system,and compare the same clearance affecting differences in different locations,thereby guiding the optimal design of aircraft control system.更多还原