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为实现开环同步系统良好的同步性能要求,对同步阀的工作过程进行深入分析。对某种不等比简易同步阀进行理论分析,在AMESim动力仿真软件环境中进行建模仿真和台架试验,对两种极限工况进行对比和深入分析,探讨液动力对不等比同步阀同步精度的影响。研究认为:同步阀阀芯两端液动力值差距越大,阀芯两端的压力差也越大,同步精度也越差。若要提高同步精度,应设法减少分流阀芯两端面液动力的差距,即降低两端面的压力差。提出一种新的分流阀芯结构,台架试验表明,新型分流阀能提高不等比同步阀工作时的同步精度,减少不确定因素的干扰。
In order to realize the good synchronization performance of the open-loop synchronization system, the working process of the synchronization valve is deeply analyzed. A kind of unequal ratio simple synchronous valve is analyzed theoretically, the simulation and bench test are carried out in AMESim dynamic simulation software environment, the two extreme conditions are compared and analyzed in depth, The impact of synchronization accuracy. The research shows that the bigger the difference of hydraulic power between the two ends of the valve stem is, the bigger the pressure difference between the two ends of the spool is and the worse the synchronization accuracy. To improve the synchronization accuracy, should try to reduce the splitter spool hydraulic power at both ends of the gap, that is, to reduce the pressure difference between the two ends. A new splitter valve structure is proposed. The bench test shows that the new splitter valve can improve the synchronization precision of unequal ratio synchronous valve and reduce the interference of uncertainties.