液压系统-主控阀动态特性的实时联合仿真方法  

Real-time Co-simulation Method for Dynamic Characteristics of Main Control Valve-hydraulic System

作　　者：冀宏[1] 李磊 简洪超 赵文杰[1] JI Hong;LI Lei;JIAN Hongchao;ZHAO Wenjie(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050;China Northern Vehicle Research Institute,Beijing 100072)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]中国北方车辆研究所,北京100072

出　　处：《液压与气动》2025年第4期110-118,共9页Chinese Hydraulics & Pneumatics

摘　　要：单一的液压系统建模对主控阀流场简化导致系统动态特性预测失真。以电液换挡操纵系统为对象,提出并实现了一种主控阀瞬态流场与液压系统仿真动态耦合的实时联合仿真方法,通过TCP/IP接口将电液控制系统模型与其主控阀流场模型的同步运算数据进行实时通讯。结果表明,该方法可以准确捕捉主控阀调节过程中内部瞬态流场参数及瞬变液动力,进而实时赋予液压系统模型中主控阀高精度参数,复现了系统振动及阀芯自激振动现象;同时发现,该系统的实时联合仿真得到主控阀液动力稳态值为12.53 N,而系统仿真值仅为0.50 N,与传统理论计算值8.09 N差距很大,此差别是引起动态性能预测差异的主要原因之一。Single hydraulic system modelling leads to distorted predictions of system dynamic characteristics due to simplification of flow field in main control valve.Taking electro-hydraulic shift control system as object,a real-time co-simulation method for coupling transient flow field of main control valve with dynamic simulation of hydraulic system is proposed and realized,the synchronous operation data of electro-hydraulic control system model and its main control valve flow field model are communicated in real time through TCP/IP interface.The results show that this method can accurately capture the internal transient flow field parameters and transient flow force during the regulating process of the main control valve,and then give high precision parameters of the main control valve in the hydraulic system model in real time,reproducing system vibration and spool self-excited vibration.At the same time,it is found that the steady state value of the main control valve flow force is 12.53 N by real-time cosimulation of the system,while the value of the system simulation is only O.50 N,which is greatly different from the traditional theoretical calculation value of 8.09 N.This difference is one of the main reasons for the difference in dynamic performance prediction.

关 键 词：电液控制系统 比例节流阀 实时联合仿真 瞬变液动力 阀芯振动 

分 类 号：TH137[机械工程—机械制造及自动化]