自走式采棉机HMCVT换挡规律研究  

Research on Shifting Law of HMCVT in Self-Propelled Cotton Picker

作　　者：鲍明喜 倪向东[1,2] 李申 齐庆征 BAO Ming-xi;NI Xiang-dong;LI Shen;QI Qing-zheng(College of Mechanical and Electrical Engineering,Shihezi University,Xinjiang Shihezi 832003,China;Key Laboratory of Northwest Agricultural Equipment,Ministry of Agriculture,Xinjiang Shihezi 832003,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 [2]农业部西北农业装备重点实验室,新疆石河子832003

出　　处：《机械设计与制造》2022年第5期172-175,共4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：根据自走式采棉机作业工况行驶要求,结合液压机械无级变速器传动原理和发动机特性曲线,对发动机输出转速通过PT(一阶低通滤波器)与目标转速的偏差通过比例微分调节器(PI)进行控制,并建立离合器液压动态系统和自走式采棉机液压机械无级变速器动态仿真模型。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纯液压段H挡、液压机械段HM1、HM2挡分析发动机输出转速、车辆燃油消耗率、车辆行驶速度以及车辆行驶位移。为进一步研究国产大功率自走式采棉机的应用提供理论依据。According to the operating conditions of the self-propelled cotton picker,the deviation between the output speed of the engine through PT(first-order low-pass filter)and the target speed is controlled by proportional differential regulator(PI)in combination with the transmission principle of the continuously variable transmission of hydraulic machinery and the characteristic curve of the engine.The dynamic simulation models of clutch hydraulic dynamic system and self-propelled cotton picker hydraulic mechanical CVT are established.According to the shift control strategy of hydraulic mechanical CVT,the engine output speed,vehicle fuel consumption rate,vehicle driving speed and vehicle driving displacement were analyzed through H block,HM1 and HM2 block of hydraulic mechanical CVT pure hydraulic section.It provides a theoretical basis for further research on the application of domestic high-power self-propelled cotton picker.

关 键 词：自走式采棉机 Simulation X 液压机械无级变速器 发动机特性 

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]