液压机械无级变速器换挡动态特性研究  

Research on Dynamic Characteristics of Shifting of Hydraulic Mechanical Continuously Variable Transmission

作　　者：鲍明喜 倪向东[1] 赵新 李申 BAO Ming-xi;NI Xiang-dong;ZHAO Xin;LI Shen(College of Mechanical and Electrical Engineering,Shihezi University,Xinjiang Shihezi 832000,China)

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832003

出　　处：《机械设计与制造》2022年第2期37-41,共5页Machinery Design & Manufacture

基　　金：国家自然基金资助项目(51665051)—自走式采棉机HMCVT负载自适应速比匹配传动鲁棒性及控制策略研究;兵团应用基础研究计划(2015AG005)—软摘锭采棉机液压机械无级变速器速比匹配及动态特性研究。

摘　　要：根据液压机械无级变速器传动原理,建立液压机械无级变速器时域数学模型,利用ITI Simulation X软件对湿式离合器、变量泵控定量马达液压调速系统和液压机械无级变速器换挡过程建立系统参数可视化界面以及进行系统物理建模。根据液压机械无级变速器换挡控制策略,通过液压机械无级变速器H段、HM1~HM2段仿真与试验结果对比,对HMCVT无级转速特性、定量马达转速特性以及湿式离合器油压特性进行分析。并探究离合器油压曲线变化对HMCVT转速的影响。为进一步研究HMCVT换挡品质提供依据。According to the transmission principle of hydraulic mechanical continuously variable transmission,the time domain mathematical model of hydraulic mechanical continuously variable transmission is established. The ITI SimulationX software is used to visualize the system parameters of wet clutch,variable pump control quantitative motor hydraulic speed control system and hydraulic mechanical continuously variable transmission shifting process. Interface and physical modeling of the system. According to the shift control strategy of the hydraulic mechanical continuously variable transmission,the HMCVT stepless speed characteristic,the quantitative motor speed characteristic and the wet clutch hydraulic pressure characteristic are analyzed by comparing the simulation of the H section and HM1~HM2 section of the hydraulic mechanical continuously variable transmission. And explore the impact of clutch hydraulic pressure curve on HMCVT speed. To provide a basis for further study of HMCVT shift quality.

关 键 词：液压机械无级变速器 Si mulation X 湿式离合器 动态特性 

分 类 号：TH16[机械工程—机械制造及自动化] S232.3[农业科学—农业机械化工程]