同步器同步过程摩擦因数变化试验及仿真研究

Test and Simulation Study on Friction Coefficient during Synchronizing Process of synchronizer

为探究同步器同步过程中摩擦锥面间摩擦因数变化对其工作性能的影响,对同步器的工作过程进行了台架试验。结果表明,该摩擦因数并非维持恒定值,其随转速差变化而变化的趋势可以用指数函数很好的拟合。根据台架试验结果,在Matlab/Simulink环境下搭建了同步器同步过程的动力学仿真模型,并通过仿真结果与试验数据的对比,证明考虑摩擦因数变化的仿真模型能够更准确地反映同步过程的真实情况,有利于同步器各工作参数的精确计算。

To investigate the influence of variation of friction coefficient between the friction cones on synchronizer＇s operating performance during the synchronizing process, bench tests is carried out. The results show that the friction coefficient varies with the speed difference as an exponential function rather than a constant value. According to bench test results, the dynamic simulation model of the synchronizing process is built in Matlab/Simulink. By comparing simulation and test results, it verifies that the model which considers the variations of friction coefficient could reflect the real conditions of the synchronizing process more accurately, which is helpful for the accurate calculation of different operating parameters of the synchronizer.