装载机数字液压传动系统换挡策略

发布时间：2018-03-10 22:09

本文选题：流体传动与控制　切入点：数字液压　出处：《吉林大学学报(工学版)》2017年03期 　论文类型：期刊论文

【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。
[Abstract]:In view of the disadvantages of low hydraulic transmission efficiency and high cost of hydraulic transmission of existing loaders, based on digital hydraulic components and their control technology, In this paper, a digital control hydrostatic drive with stepwise automatic speed change is put forward. The fuzzy shift control strategy of digital pump and digital motor displacement is designed, aiming at the steady running of engine in economic region and combining with the working condition of loader shovel. The dynamic matching of digital pump and engine, digital motor and variable load is realized. The feasibility of this scheme is verified by AMESim simulation. It has certain reference significance for other driving system design of construction machinery.
【作者单位】：吉林大学机械科学与工程学院;吉林大学汽车仿真与控制国家重点实验室;吉林大学珠海学院机械与汽车工程系;
【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)
【分类号】：TH137;TH243

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