Positive flow control of closed-center electrohydraulic implement-by-wire systems for mobile equipment applications
Positive flow control of closed-center electrohydraulic implement-by-wire systems for mobile equipment applications
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DOI：
10.1016/s0957-4158(03)00067-9
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发表时间：
2004-05-01
期刊：
影响因子：
3.3
通讯作者：
Anwar, S
中科院分区：
文献类型：
--
作者：
Cetinkunt, S;Pinsopon, U;Anwar, S
在运土和建筑设备(如轮式装载机、挖掘机、收割机)等移动设备应用中，数字控制电液(EH)闭心阀和负载传感液压泵系统迅速取代了老式液压机械控制(先导驱动、机械控制)开中心阀和固定排量泵系统。通过精心设计和协调的运动控制系统，使用闭合中心EH系统可以提高液压系统的动力效率，从而实现显著的燃料节约。此外，通过实时控制软件，可以针对不同的应用优化机器行为。这种能力在液压机械控制系统中是不可能的。能源效率、高性能、基于软件的可重配性和可靠性是移动设备EH系统设计的主要目标。(C)2003爱思唯尔有限公司。保留所有权利。
Digitally controlled electrohydraulic (EH) closed-center valves and load sensing hydraulic pump systems have been quickly replacing the older generation of hydro-mechanically controlled (pilot actuated, mechanically controlled) open-center valves and fixed displacement pump systems in mobile equipment applications such as earth moving and construction equipment (i.e. wheel loaders, excavators, harvesters). With carefully designed and coordinated motion control systems, the power efficiency of the hydraulic system can be improved using closed-center EH systems to the point that significant fuel savings can be achieved. Furthermore, the machine behavior can be optimized for different applications via real-time control software. Such capabilities were not possible in hydro-mechanically controlled systems. Energy efficiency, high performance, software based re-configurability and reliability are the main objectives in design of EH systems for mobile equipment applications. (C) 2003 Elsevier Ltd. All rights reserved.