Review of energy efficient direct pump controlled cylinder electro-hydraulic technology
Review of energy efficient direct pump controlled cylinder electro-hydraulic technology
复制标题
DOI：
10.1016/j.rser.2014.04.036
复制
发表时间：
2014-07
影响因子：
15.9
通讯作者：
Zhongyi Quan;Long Quan;Jinman Zhang
中科院分区：
文献类型：
--
作者：
Zhongyi Quan;Long Quan;Jinman Zhang
液压缸是工程机械等高功率应用中不可缺少的直线执行机构。为了降低液压缸控制系统的能耗、噪声和废油处理污染，最直接的方法是采用直接泵控制技术，消除了主电力线的节流阀损耗。在这种系统中，通过改变泵的转速或排量，使压力和容积流量与负载的需要相匹配。迄今为止，这一领域的研究工作在许多文章中都有报道，但它们是分散的，并且用不同的语言写成。看来有必要对这项技术的最新发展作一个概述。本文对该技术进行了全面的综述，旨在阐明该技术的最新进展，并概述了该技术研究和应用中的潜在挑战。综述主要包括三部分：系统结构、控制和衍生能量回收系统。同时介绍了电液缸控制系统的发展。综述表明，应重视直接泵控缸系统的控制和能量回收方案，以及新提出的非对称泵控差动缸技术。预计本文收集的信息将为研究人员提供有价值的一站式信息来源，并为该领域的未来研究提供方向。
Hydraulic cylinder is an indispensable linear actuator in high power applications like construction machinery. In order to reduce the energy consumption, the noise and the waste oil disposal pollution of the hydraulic cylinder control system, the most direct method is adopting the direct pump control technology which eliminates the throttle losses in the main power line. In such system, by changing the speed or the displacement of the pump, the pressure and volume flow will be matched with the need of loads. To date, research works in this field have been reported in many articles, but they are scattered and written in different languages. An overview which can summarize the latest development of this technology appears to be necessary. This paper provides a comprehensive review on this technology, aiming at clarifying recent advances and outlining potential challenges in the research and application of this technology. The review mainly covers three parts: system structure, control, and derived energy recovery system. Also the evolvement of the electro-hydraulic cylinder control system is introduced. The review indicates that attentions should be paid to the control and energy recovery plan of the direct pump controlled cylinder system, and to the newly proposed asymmetric pump controlled differential cylinder technology. It is envisaged that the information gathered in this paper will be a valuable one-stop source of information for researchers, as well as providing a direction for future research in this area.