• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (4): 191-201.doi: 10.3901/JME.2021.04.191

• 交叉与前沿 • 上一篇    下一篇

扫码分享

多电压复合驱动的高速开关阀性能研究

钟麒1,2,3, 谢耿1,3, 汪谢乐1,3, 李研彪1,3, 杨华勇2, 张斌2, 陈波1,3   

  1. 1. 浙江工业大学机械工程学院 杭州 310023;
    2. 浙江大学流体动力与机电系统国家重点实验室 杭州 310027;
    3. 浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室 杭州 310023
  • 收稿日期:2020-04-20 修回日期:2020-10-11 出版日期:2021-02-20 发布日期:2021-04-28
  • 通讯作者: 李研彪(通信作者),男,1978年出生,博士,教授,博士研究生导师。主要研究方向为并联机构设计与控制、智能控制。E-mail:lybrory@zjut.edu.cn
  • 作者简介:钟麒,男,1991年出生,博士,讲师。主要研究方向为数字液压技术、电液比例控制、液压元件与系统的可编程控制技术。E-mail:zhongqi@zjut.edu.cn
  • 基金资助:
    浙江大学流体动力与机电系统国家重点实验室开放基金(GZKF-201906)、国家自然科学基金(52005441,51975523,51905481)和浙江省自然科学基金(LQ21E050017,LR18E050003)资助项目。

Performance Analysis of High Speed on/off Valve by Multi-voltages Compound Excitation

ZHONG Qi1,2,3, XIE Geng1,3, WANG Xiele1,3, LI Yanbiao1,3, YANG Huayong2, ZHANG Bin2, CHEN Bo1,3   

  1. 1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023;
    2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027;
    3. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023
  • Received:2020-04-20 Revised:2020-10-11 Online:2021-02-20 Published:2021-04-28

摘要: 高速开关阀是数字液压技术的核心元件。高速开关阀的动态特性是决定数字液压技术响应速度和控制精度的关键。提出多电压复合驱动策略,通过预加载方法优化了高速开关阀启闭初始电流,并结合电流反馈和数字逻辑触发机制,实现了5个驱动电压的自适应切换,最大程度上确保了高速开关阀的快响应切换和低功耗驱动。理论分析探究了初始电流和驱动电压对高速开关阀动态特性的影响规律,并基于该规律得到了改善高速开关阀动态特性的方法。搭建了高速开关阀仿真模型,开展了动态性能试验,通过直接测试和间接测试两种方法对所提出的多电压复合驱动方法的有效性进行了验证。结果表明,相比较于双电压驱动方法,多电压复合驱动方法在不增大驱动电压的前提下,通过优化启闭初始电流,大幅提高了开关阀的响应速度,减少开启滞后时间66.7%、缩短关闭滞后时间87.5%,并能改善高速开关阀流量控制特性,将其流量线性范围扩大了17.1%,同时还降低热功率损耗64.8%,减小工作钢球压迫受力,延长高速开关阀使用寿命。

关键词: 高速开关阀, 多电压复合驱动, 预加载, 动态特性

Abstract: High speed on/off valve(HSV) is the core component of digital hydraulic technology. The dynamic characteristic of HSV is the key to improve the response performance and control accuracy of digital hydraulic technology. A multi-voltage compound excitation algorithm is proposed to optimize the initial currents of the switching processes by preloading method. Together with current feedback decision and logic triggering principle, the adaptive switching of the 5 voltages is realized, so that a fast response and low energy driving can be achieved. The effects of initial current and driving voltage on the dynamic performance of the HSV are explored by theoretical analysis, and the methods to improve the dynamic characteristics are obtained. A simulation model of HSV is established, and the dynamic performance experiments of HSV are carried out. The effectiveness of the proposed multi-voltage compound excitation algorithm is verified by direct and indirect measurement. The results show that compared to the double-voltage excitation algorithm, the multi-voltage compound excitation algorithm greatly improved the response speed of the HSV by optimizing the opening and closing initial current without increasing the driving voltage. The opening delay time is reduced by 66.7%, and the closing delay time is decreased by 87.5%. In addition, the flow control characteristic is also improved whose flow linear range was expanded by 17.1%. Meanwhile, the thermal power loss is reduced by 64.8%, the extrusion force of the operation balls is lessened, and the service life is extended.

Key words: high speed on/off valve, multi-voltages compound excitation, preloading method, dynamic performance

中图分类号: