摘要
为了研究间隙铰链对舵面传动机构动态特性的影响规律,基于一种改进的变刚度法向碰撞力模型,计入杆件弹性因素,分别进行了不同间隙值(c=0、c=δ及c=1.6δ)、不同摩擦因数(0.06、0.08及0.1)工况下舵机角速度、角加速度的数值模拟分析。结果表明,因间隙影响,舵机动态输出角速度、角加速度均呈现明显的振荡现象,且角加速度较角速度振荡幅值更大;同时,在驱动载荷发生变化时,角速度、角加速度均存在较大的波动,但无间隙情况下的波动程度较有间隙情况下更大;此外,间隙铰链处摩擦因数越大,角速度和角加速度振荡幅值越大,并伴随高频振荡和延迟现象。
In order to study the dynamic characteristics of flap transmission mechanism with clearance joints,based on an improved nonlinear normal impact force model with variable stiffness,and the elastic factor of connecting rod,the angular velocity and angular acceleration of the steering gear are simulated and analyzed with the conditions of different clearance joints(c=0、c=δand c=1.6δ),and different friction parameters(0.06、0.08 and 0.1).The dynamic output angular velocity and angular acceleration of the flap transmission exhibit obvious oscillation,and the amplitude of the angular acceleration is larger than that of the angular velocity oscillation;at the same time,when the driving load changes,the angular velocity and angular acceleration fluctuate greatly,but the fluctuation degree in the case of c=0 is greater than that with clearance;in addition,the higher the friction coefficient at the clearance joint is,the greater the amplitude of angular velocity and angular acceleration oscillation are,accompanied by high-frequency oscillation and delay phenomenon.
作者
张涛
刘更
马尚君
Zhang Tao;Liu Geng;Ma Shangjun(Shaanxi Engineering Laboratory for Transmissions and Controls,Northwestern Polytechnical University,Xi′an 710072,China)
出处
《机械传动》
北大核心
2023年第6期16-21,共6页
Journal of Mechanical Transmission
关键词
间隙铰链
舵面传动机构
刚柔耦合
动态特性
Clearance joint
Flap transmission mechanism
Rigid flexible coupling
Dynamic charac⁃teristics
