基于转矩控制的定排量恒压电液动力源运行特性

doi:10.3901/JME.2022.20.453

机械工程学报 ›› 2022, Vol. 58 ›› Issue (20): 453-460.doi: 10.3901/JME.2022.20.453

• 交叉与前沿 • 上一篇

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基于转矩控制的定排量恒压电液动力源运行特性

葛磊¹, 杨飞², 权龙¹, 张红娟¹, 闫政³

1. 太原理工大学新型传感器与智能控制教育部和山西省重点实验室太原 030024;
2. 潍柴动力股份有限公司液压传动研究院潍坊 261000;
3. 晋中学院机械系晋中 030600

收稿日期:2021-01-25 修回日期:2021-11-20 出版日期:2022-10-20 发布日期:2022-12-27
通讯作者: 张红娟(通信作者)，女，1974年出生，博士，教授，博士研究生导师。主要研究方向为流体传动与控制。E-mail：zhanghongjuan@tyut.edu.cn
作者简介:葛磊，男，1987年出生，博士后。主要研究方向为电液动力源节能控制。E-mail：415597710@qq.com
基金资助:
国家自然科学基金资助项目(51775363，51805349)。

Pressure Controlling Performance of Constant Displacement Electro-hydraulic Power Source Based on Direct Torque Control

GE Lei¹, YANG Fei², QUAN Long¹, ZHANG Hongjuan¹, YAN Zheng³

1. Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024;
2. Hydraulic Transmission Research Institute, Weichai Power, Weifang 261000;
3. Department of Mechanics, Jinzhong Institute, Jinzhong 030600

Received:2021-01-25 Revised:2021-11-20 Online:2022-10-20 Published:2022-12-27

摘要/Abstract

摘要： 通过协调电液动力源转速和排量可以提升其能效，也是目前电液动力源的研究热点，随着变频和伺服技术的发展，变转速电液动力源也越来越多地应用在工业生产和航空航天装备中。目前，电液动力源实现流量控制可以采用变排量控制，也可以采用变转速控制，这两种控制方式已非常成熟，应用也较多。但在压力控制中，还往往只能依赖液压泵变排量控制结合压力反馈实现压力控制机能，采用变转速控制压力时，难以适应负载流量随机快速变化工况。为此，提出采用高效率的伺服电动机直接驱动定量泵，进一步提出基于转矩控制和转速补偿的压力控制方案，在负载压力变化时，无需控制电动机转速，具有动态响应快、系统结构简单的优点。通过理论分析和试验研究，结果表明，采用设计的方案可以很好地实现压力控制，在相同条件下，与常规恒压变量泵相比，压力响应时间从160 ms降低到50 ms，响应速度远超国际同类恒压控制泵

关键词: 电液动力源, 压力控制, 变转速, 转矩控制

Abstract: The energy efficiency of the electro-hydraulic power source can be improved by coordinating its speed and displacement, which is also the research hotspot at present. With the development of frequency conversion and servo technology, speed variable electro-hydraulic power source is more and more applied in industrial production and aerospace equipment. At present, the flow control of power source can adopt variable displacement control or variable speed control. These two control methods are very mature and widely used. However, in the pressure control, a constant pressure pump combined with pressure feedback is often used to realize the pressure control. If the pressure is controlled via the pump speed, it is difficult to adapt to the random and rapid changing of load flow rates. A high-efficiency servo motor is used to drive the quantitative pump directly, and a pressure control scheme based on torque control is proposed. When the load pressure changes, there is no need to control the motor speed, which has the advantages of faster dynamic response and simple system structure compared with the conventional constant pressure displacement variable pump. Through theoretical analysis and experimental research, the results show that the design scheme can achieve the pressure control. Under the same test conditions, compared with the conventional constant pressure pump, the pressure response time is reduced from 160 ms to 50 ms.

Key words: electro-hydraulic power source, pressure control, speed variable, torque control

中图分类号:

TH137

葛磊, 杨飞, 权龙, 张红娟, 闫政. 基于转矩控制的定排量恒压电液动力源运行特性[J]. 机械工程学报, 2022, 58(20): 453-460.

GE Lei, YANG Fei, QUAN Long, ZHANG Hongjuan, YAN Zheng. Pressure Controlling Performance of Constant Displacement Electro-hydraulic Power Source Based on Direct Torque Control[J]. Journal of Mechanical Engineering, 2022, 58(20): 453-460.

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基于转矩控制的定排量恒压电液动力源运行特性

Pressure Controlling Performance of Constant Displacement Electro-hydraulic Power Source Based on Direct Torque Control

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