Displacement and dual-pressure compound control for fast forging hydraulic system

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• 作者：Jing Yao ; Bin Li ; Xiangdong Kong ; Fang Zhou
• 关键词：Compound control strategy ; Control performance ; Energy consumption ; Fast forging hydraulic press ; Position control ; Proportional valve ; SMISMO
• 刊名：Journal of Mechanical Science and Technology
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：30
• 期：1
• 页码：353-363
• 全文大小：3,082 KB
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• 作者单位：Jing Yao (1) (2) (3)
  Bin Li (3)
  Xiangdong Kong (1) (2) (3)
  Fang Zhou (3)
  
  1. The Laboratory of Heavy Machinery Fluid Power Transmission and Control in Hebei, Yanshan University, Qinhuangdao, 066004, China
  2. National and Local Joint Engineering Center for Advanced Forging Press Forming Technology and Equipment Faculty of Engineering, Yanshan University, Qinhuangdao, 066004, China
  3. Yanshan University, Qinhuangdao, 066004, China
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Structural Mechanics
  Control Engineering
  Industrial and Production Engineering
  
• 出版者：The Korean Society of Mechanical Engineers
• ISSN：1976-3824

文摘

The poor energy efficiency is a big issue in the conventional electro-hydraulic proportional valve controlled fast forging system due to the huge throttling losses and overflow losses. Aimed to address this problem, a new compound control strategy of displacement and dual-pressure was proposed in this study. Firstly, the mathematic model of the main components was built, and the compound control strategy was designed depending on the different working conditions. Then, the overall control system was integrated for both downstroke stage and return-stroke stage. The proposed control strategy was tested and evaluated in a 0.6 MN fast forging press. Results indicated that the input energy was reduced by 50% and energy loss decreased dramatically while control performance was good. Results also show that control performance and energy saving are significantly affected by the variation of △p and p _b . Overall, the proposed new control strategy could be used for the fast forging press with high energy efficiency.