生产率最高的拖拉机HMCVT变速控制及仿真分析  

HMCVT Speed Change Control and Simulation Analysis of Tractor with the Highest Productivity

作　　者：张明柱[1,2] 白东洋 王全胜 ZHANG Ming-zhu;BAI Dong-yang;WANG Quan-sheng(School of Mechatronics Engineering,Henan University of Science and Technology,He’nan Luoyang 471003,China;Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of He’nan Province,He’nan Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]机械装备先进制造河南省协同创新中心,河南洛阳471003

出　　处：《机械设计与制造》2018年第4期12-15,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51375145)

摘　　要：为了使拖拉机能够获取最高的生产率,以配备HMCVT的400马力拖拉机为研究实例,通过分析计算对变速器的变速比进行了优化,得出了在任意牵引力及相应目标车速条件下的HMCVT最优变速比。随后对HMCVT的生产率最高变速控制进行了分析,制定了变速器的换段逻辑和变速控制原理;并以变速器变速比和发动机转速为控制变量,建立了生产率最高的二元协同控制拖拉机HMCVT仿真模型。应用二维查表插值的方法控制变速比输入,以某大小牵引力及相应目标车速为条件,对最优变速比进行了仿真验证。仿真结果表明:经过优化所得出的变速比能够使拖拉机输出较大的牵引功率,该优化计算方法具有一定的可行性。To make the tractor could obtain the highest productivity,the 400 horsepower tractor equipped with H M CVT is studied as a case.The transmission speed ratio is optimized through the analysis of computation.Under the condition of any traction force and the corresponding target vehicle speed,the H M CVT optimal variable velocity ratio is obtained.Then the highest productivity transmission control of H M CVT is analyzed,and the principle of speed change control for H M CVT is established.The speed change ratio and the engine speed is taken as the control variables,the H M CVT simulation model of the dual cooperative control for tractor with the highest productivity is built.The speed change ratio input is controlled by two dimensional look-up table and interpolation method,and the optimal speed change ratio is simulated and verified by the traction force of a certain size and the speed of the corresponding target.The simulation results show that after optimization the speed change ratio can make the tractor’s traction power output larger,the optimization calculation method is feasible.

关 键 词：HMCVT 生产率 变速比 仿真 控制 拖拉机 

分 类 号：TH16[机械工程—机械制造及自动化] S219.032.1[农业科学—农业机械化工程]