Transactions of Materials and Heat Treatment

Title：Compound control strategy design and dynamic characteristic on variable speed pump-controlled closed steering system

Authors： Wu Qiumei1 Liu Huiming2 Li Qiang3 Yu Yan4

Unit： 1. Intelligent Manufacturing College Xinxiang Voca tional and Technical College 2.Mechanical Engineering Department Luohe Technician College 3. School of Mechanical Engineering Henan Polytechnic University 4. Aviation Industry Xinhang Yubei Steering System (Xinxiang) Co. Ltd.

KeyWords： pump-controlled closed steering system compound control energy efficiency electro-hydraulic control dynamic characteristics

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):159-143

Abstract：

Based on the working principle of variable speed pump-controlled closed steering system, a strategy that realized the compound control of pressure-position parameters was proposed, and the preloading and operation control processes similar to that of the hydraulic cylinder were realized. At the same time, the experimental platform was established to complete the verification and analysis of the above principles. The test results show that the constructed system and control strategy are feasible, and the control function similar to the valve control system can be realized, showing excellent running characteristics and obtaining high energy efficiency utilization rate. By means of pressure-position compound control, the control process of the variable speed pump-controlled closed steering system is completed, and the fast dynamic response to the pressure and position circuit is realized. However, the total pressure fluctuates only slightly and can be quickly restored to the setted parameters. Overall, the hydraulic cylinder running characteristics are good and can meet the actual control requirements of the electro-hydraulic control system.

Funds：

河南省高等学校重点科研项目计划资助项目（18A460002）

吴秋梅(1981-)，女，硕士，讲师 E-mail：wqmblue123@126.com

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