含间隙滚珠丝杠式电动舵机动态特性分析

发布时间：2017-12-30 19:02

本文关键词：含间隙滚珠丝杠式电动舵机动态特性分析　出处：《计算机仿真》2016年01期 　论文类型：期刊论文

【摘要】：在飞行器电动舵机动态特性优化中,间隙是舵机中的重要非线性因素,限制了舵机系统带宽和位置精确度的提高。为了对舵机间隙进行补偿控制,提高电动舵机的性能,对含间隙滚珠丝杠式电动舵机的动态特性进行分析与探讨。首先对电动舵机含间隙的各个部位进行分析,并给出了间隙理论模型,之后建立含间隙舵机理论模型,通过仿真分析给出了不同间隙下系统的谐振频率和反谐振频率,并在ADAMS中进行不同间隙下系统的响应特性仿真。最后在某型舵机上进行扫频分析。仿真和实验结果表明,间隙存在时,舵机的运动学和动力学特性中存在高峰值现象,舵机的机械响应受到很大的影响。上述结论对舵机的结构设计和控制系统设计提供了理论依据。
[Abstract]:In the optimization of dynamic characteristics of aircraft electric actuator, clearance is an important factor in the nonlinear servo actuator system, limited bandwidth and location accuracy. In order to compensate the servo control of the gap, improve the performance of electric actuator, analyze and discuss the dynamic characteristics of the bearing clearance of ball screw type electric steering gear. All parts of the first electric the steering gear with clearance are analyzed, and gives the theory of gap model, after the establishment of clearance steering model, the resonant frequency of different gap system and anti resonant frequency are given through simulation analysis and Simulation of response characteristics of different gap system in ADAMS. Finally, by frequency sweep analysis in a certain type of actuator. The simulation and experimental results show that the gap exists, there is the peak value phenomenon of the kinematic and dynamic characteristics of the servo actuator, the mechanical response is greatly. The above conclusions provide a theoretical basis for the structural design of the rudder and the design of the control system.

【作者单位】：中国科学院长春光学精密机械与物理研究所;
【分类号】：V249;V212
【正文快照】： 1引言电动舵机是飞行器的重要执行机构,其性能的优劣直接影响了飞行器的性能。由于制造误差和安装误差等造成间隙在舵机传动系统中普遍存在,经过系统长时间运行疲劳,间隙峰值增大,使得输人输出产生偏差间隙是舵机中的重要非线性因素,严重影响舵机的带宽及角位置精度,必须深

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