节流调速液压系统动态特性研究

摘要

为获得节流调速系统在不同工作状态下的瞬态特性，对进油、回油节流阀节流调速系统进行了数字与实验研究。建立了系统流体流动和各部件受力相互作用的动力学模型，仿真分析了系统参数---节流阀通流截面积 At 、负载 F和油液体积弹性模量E对节流调速系统的动态特性影响；讨论了进油、回油节流阀节流调速系统的动态响应特性；通过试验验证了所设计的动力学模型的正确性。其研究方法可为设计液压系统时选择调速系统参数提供借鉴和参考。%In order to study transient characteristics in throttle speed control system under differ-ent working conditions ,the inlet and outlet systems were studied numerically and experimentally .A dynamics model coupling fluid flow with the force in various components was developed .The effects of cross-sectional area At ,load F and bulk modulus of elasticity E on dynamic characteristics of the throt-tle speed control system were analyzed by simulation .Dynamic response characteristics of the inlet and outlet systems were discussed .The research methods provide a reference for the correct parameter se-lection of the speed control system in the hydraulic system design .