锻压技术

变速泵控闭式转向系统复控策略设计及动态特性

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

作者：吴秋梅1 刘会明2 李强3 于艳4

单位：1. 新乡职业技术学院智能制造学院 2. 漯河技师学院机械工程系 3. 河南理工大学机械工程学院 4. 航空工业新航豫北转向系统（新乡）有限公司

关键词：泵控闭式转向系统复合控制能效电液控制动态特性

分类号：

出版年,卷(期):页码：2022,47(3):159-143

摘要：

针对变速泵控闭式转向系统工作原理，开发了一种可以实现对压力-位置参数进行复合控制的方案，从而达到与液压缸相近的预压紧与运行控制过程。同时，构建实验平台，完成了上述原理的验证分析。测试结果表明：构建的系统与控制方案是可行的，能够实现类似阀控系统的控制功能，表现出了优异的运行性能，并获得了较高的能效利用率。通过压力-位置复控的方式完成了变速泵控闭式转向系统的控制过程，实现了对压力与位置回路的快速动态响应。总压力只发生了小幅波动，可以快速恢复到设定参数，从总体上看，液压缸表现出了良好的运行特性，能够满足电液控制系统的实际控制要求。

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.

基金项目：

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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