考虑自锁元件动态特性的超越离合器-齿轮系统模型研究

Research on Models of Overrunning Clutch-Gear Systems Considering Dynamic Characteristics of Self-locking Components

现有超越离合器动力学模型仅将主从动端的转速差或者转角差作为其处于接合或者超越状态的判断依据,但实际上由于自锁元件的惯性、变形因素及主从动件之间间隙的存在,此类模型在准确描述超越离合器及其传动系统的动力学特性方面存在一些问题。针对此类问题,以现有动力学模型为基础,提出通过转角补偿的形式将自锁元件动态特性的影响纳入建模的考虑因素,基于不同类型的超越离合器模型建立了超越离合器-齿轮系统动力学模型,分别在输入端驱动力矩稳定和波动两种情况下,应用MATLAB/Simulink进行了动力学特性仿真计算,并进行了超越离合器-齿轮系统台架试验。对计算结果和试验结果进行了对比分析,证明超越离合器采用"加入转角补偿的转角差模型"能够更为准确地描述超越离合器-齿轮系统的动态特性。

The existing dynamics models of overrunning clutchs regarded the rotational speed differences or angle differences between driving and driven parts as the only standard to recognize the engaging states. Actually, due to the self-locking part inertia, deformation factors, and interspaces between the driving and driven parts, the above mentioned models had some difficulties in accurately describing and studying the dynamic characteristics of overrunning clutchs and the transmission systems. In order to solve these problems, this paper proposed a modified modeling method considering the influences of dynamic characteristics of self-locking components through angle compensation. The modified models were established on MATLAB/Simulink platform under constant driving torque conditions and varying driving torque conditions. To validate the effectiveness and accuracy, the bench experiments were carried out. Then, the comparison between simulation and experimental results show that the overrunning clutch models with angle compensation may help to describe the dynamic characteristics of overrunning clutch-gear systems more accurately.