New solutions for electrohydraulic control systems with separate metering edges for mobile machinery

用于移动机械的具有独立计量边缘的电液控制系统的新解决方案

• 批准号: 198148399
• 负责人: Professor Dr.-Ing. Jürgen Weber
• 金额: --
• 依托单位: Professur für Fluid-Mechatronische Systemtechnik (Fluidtronik)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/198148399?language=en
• 关键词: New; solutions; electrohydraulic; control; systems

The objective of the project is the systematical exploration of structural implementations of load-compensated, electro-hydraulic control systems with separate metering edges for mobile machinery. A comparison between known control concepts with separate metering edges and the newly developed solutions shows many advantages especially in terms of energy consumption, design, comissioning expenses as well as costs. In addition to these general criteria, certain sub-goals can be to be pursued:- Lowering the energy consumption by reducing the losses at the tank edges- Simplifying the design of control edges in comparison to conventional systems- Simple control strategies for operating the individual metering elements and thus achieving at least as good dynamic performance as existing control systems- Reduction of components expense (solenoids, valves, sensors) compared to previously known system solutions with separate control edges - Control on the basis of electro-hydraulic control systems- Load-compensated operation of consumers - Simple implementation of circuits to exploit recuperation and regeneration potentials.The main objective of the work during the second phase is the implementation of the preferred variants at the excavator test rig in the labroratry of the Institute of Fluid Power. In addition to a component related expansion of the excavator test rig the development, implementation, commissioning and analysis of the operating strategy including control concept will be work packages. Because of the industries interest in the basic research orientation of the project, the needed valve technology for the planned experiments will be provided by industry partners. Another research aspect, which has been obtained in the context of the preceded work, is the analysis and representation of energy distribution within drive systems with parallel operated consumers. The commonly used representations in the literature, such as Sankey diagrams or power distribution diagrams in bar graphs have reached there limits. Here, the frequencies of occurrence of operating points have proved to be an illustrative tool.

该项目的目标是系统地探索用于移动机械的具有单独计量边缘的负载补偿、电液控制系统的结构实施。具有单独计量边缘的已知控制概念与新开发的解决方案之间的比较显示出许多优势，特别是在能耗、设计、调试费用以及成本方面。除了这些一般标准之外，还可以追求某些子目标： - 通过减少罐边缘的损耗来降低能耗 - 与传统系统相比，简化控制边缘的设计 - 用于操作各个计量元件的简单控制策略，从而实现至少与现有控制系统一样好的动态性能 - 与先前已知的具有单独控制的系统解决方案相比，减少组件费用（电磁阀、阀门、传感器） 边缘 - 基于电液控制系统的控制 - 用户的负载补偿操作 - 简单实施电路以利用恢复和再生潜力。第二阶段工作的主要目标是在流体动力研究所实验室的挖掘机试验台上实施优选的变体。除了挖掘机试验台的组件相关扩展之外，包括控制概念在内的操作策略的开发、实施、调试和分析也将成为工作包。由于行业对该项目的基础研究方向感兴趣，计划实验所需的阀门技术将由行业合作伙伴提供。在先前工作的背景下获得的另一个研究方面是具有并行操作消费者的驱动系统内的能量分布的分析和表示。文献中常用的表示方法，例如桑基图或条形图中的功率分布图已经达到了极限。在这里，工作点出现的频率已被证明是一种说明性工具。