基于数字样机模拟仿真的液压站压力补偿参数获取方法研究  

Research on the Method of Obtaining Pressure Compensation Parameters for Hydraulic Stations Based on Digital Prototype Simulation

作　　者：董莘 吴文凯 李麒 赵寒涛 石磊 矫洪成 Dong Shen;Wu Wenkai;Li Qi;Zhao Hantao;Shi Lei;Jiao Hongcheng(Institute of Intelligent Manufacturing,Heilongjiang Academy of Sciences,Harbin 150090,China)

机构地区：[1]黑龙江省科学院智能制造研究所,哈尔滨150090

出　　处：《黑龙江科学》2024年第22期44-47,51,共5页Heilongjiang Science

基　　金：黑龙江省科学院重点研发计划项目“基于数字样机模拟仿真的液压站末端压力补偿控制方法研究”(ZDYF2024ZN06)。

摘　　要：当液压站与液压执行元件之间距离较远时,管道阻力会造成执行元件处的压力明显下降,无法满足预期工况的需要,而在一些特殊情况下又无法在执行元件的前端加装仪表用于监测及校正压力数值。探讨了一种以数字样机仿真模拟为基础获取压力值补偿数值的方法,通过仿真运算获得常用工况下液压站的流动状态,从中提取液压系统的供压端与进入执行元件前执行端的压力数值,构建两者间的压力关系曲线,再以执行端的压力为基准,利用超前控制方式提高供压端的压力值,以补偿管道阻力造成的压降。The conduit between the hydraulic actuator and hydraulic power station will cause the pressure decrease significantly when the hydraulic actuator is far away from hydraulic power station,so that the pressure value fails to meet the requirements of the anticipated operational conditions.In special cases,it is not possible to install a sensor in the front end of the hydraulic actuator for monitoring and correcting the pressure value.The study discuss a pressure compensation method based on digital prototype simulation,obtains the flow state of the hydraulic system under common working conditions and the pressure values of the pressure supply of the hydraulic station and the outlet of the pipeline,constructs the pressure relationship curve between them,and increases the pressure at the supply end with advance control based on the pressure at the execution end,so as to compensate the pressure drop caused by pipeline resistance.

关 键 词：液压站 数字样机 仿真 压力补偿 

分 类 号：TH13[机械工程—机械制造及自动化]