装载机数字液压传动系统换挡策略  

Shifting strategy of digital hydraulic transmission system for wheel loader

作　　者：王丽[1,2,3] 刘昕晖[1,2] 王昕[1,2] 陈晋市[1,2] 梁燚杰 WANG Li LIU Xin-hui WANG Xin CHEN Jin-shi LIANG Yi- jie(School of Mechanical Science and Engineering , Jilin University, Changchun 130022, China State Key Laboratory of Automotive Simulation and Control,Jilin University, Changchun 130022, China Department of M.echanical and Automotive Engineerings Zhuhai College of J ilin University,Zhuhai 519041, China)

机构地区：[1]吉林大学机械科学与工程学院,长春130022 [2]吉林大学汽车仿真与控制国家重点实验室,长春130022 [3]吉林大学珠海学院机械与汽车工程系,广东珠海519041

出　　处：《吉林大学学报（工学版）》2017年第3期819-826,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51405183);教育部博士学科点专项科研基金项目(20130061120036)

摘　　要：针对现有装载机液力传动效率低、液压传动成本高等不足,基于数字液压元件及其控制技术,提出了数字控制静液传动有级自动变速方案。以发动机稳定运转在经济区域内为目标,结合装载机铲掘工况,设计了数字泵和数字马达排量的模糊换挡控制策略,实现了数字泵与发动机、数字马达与变化负载的动态匹配。通过AMESim仿真验证了该方案的可行性,本研究为装载机传动系统设计提供了一种新思路,对其他行走工程机械传动系统设计具有一定参考意义。In order to solve the problems of low efficiency and high cost of the existing hydraulic transmission of wheel loader, a digital controlled hydraulic transmission （DHST） scheme of fixed step ratio automotive transmission was proposed based on digital hydraulic components and their control technology. To ensure the engine work steadily in the economic region, combined with the shovel operating condition of the wheel loader, fuzzy shift control strategies of the digital pumps and motors displacement were designed to realize the dynamic optimal matching between the combustion engine and the digital pumps, digital motors and the changing load. The feasibility of the scheme was verified by AMESim simulation. This research provides a new design concept for the wheel loader transmission system, and it has certain reference significance for the design of other mechanical transmission system.

关 键 词：流体传动与控制 数字液压 静液传动 有级自动变速 模糊控制 

分 类 号：TH137[机械工程—机械制造及自动化]