自适应供油压力变化的高速开关阀控制策略研究

doi:10.3901/JME.2021.06.224

机械工程学报 ›› 2021, Vol. 57 ›› Issue (6): 224-235.doi: 10.3901/JME.2021.06.224

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自适应供油压力变化的高速开关阀控制策略研究

钟麒^1,2, 何贤剑³, 李研彪¹, 张斌², 杨华勇², 陈波¹

1. 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 310014;
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. 浙江海宏液压科技股份有限公司临海 317000

收稿日期:2020-05-01 修回日期:2020-10-15 出版日期:2021-03-20 发布日期:2021-05-25
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;张斌，男，1980年出生，博士，副研究员，硕士研究生导师。主要研究方向为数字液压技术、智能工程机械。E-mail：zbzju@163.com
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(51890885，52005441，51975523，51905481)和浙江省自然科学基金(LQ21E050017，LR18E050003)资助项目。

Research on Control Algorithm for High-speed on/off Valves that Adaptive to Supply Pressure Changes

ZHONG Qi^1,2, HE Xianjian³, LI Yanbiao¹, ZHANG Bin², YANG Huayong², CHEN Bo¹

1. Key Laboratory of Special Purpose Equipment & Advanced Processing Technology, Ministry of Education & Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014;
2. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027;
3. Zhejiang Haihong Hydraulic Technology Co., Ltd, Linhai 317000

Received:2020-05-01 Revised:2020-10-15 Online:2021-03-20 Published:2021-05-25

摘要/Abstract

摘要： 针对球阀结构高速开关阀动态特性受供油压力影响大的问题，提出自适应供油压力变化的高速开关阀控制策略，通过计算不同供油压力下的高速开关阀临界启闭电流，结合电流反馈机制，实现多个激励电压源之间的自动切换，最大程度上维持了高速开关阀在变供油压力下的动态特性。理论分析验证了供油压力对高速开关阀的动态特性有较大影响。仿真和试验都达到了控制策略的预期效果，结果表明，与单电压驱动方法相比，自适应供油压力变化的高速开关阀控制策略在5～20 MPa的供油压力变化范围内，能有效减少高速开关阀总启闭时间56.9%～75.8%，扩大可控占空比范围45.9%～240.6%，提高最大工作频率161.0%～637.5%。在动态性能提升的同时，自适应供油压力变化的高速开关阀控制策略将启闭总时长的变化率控制在2.1%以内(变化范围0.2 ms)，可控占空比范围的变化率稳定在2.1%以内，最大工作频率的差异系数保持在4.6%以内。

关键词: 高速开关阀, 供油压力变化, 动态特性维持, 启闭时长, 可控占空比, 最大工作频率

Abstract: Aiming at the problem that the dynamic characteristic of the sphere structure high speed on/off valve(HSV) is greatly affected by the supply pressure, a control algorithm for HSV that adaptive to supply pressure changes is proposed. Adaptive switching of multi-voltage sources is realized by combining current feedback operation principle with calculating critical switching currents of HSV under different supply pressures, so that the dynamic performance of the HSV under changing supply pressure can be preserved. Theoretical analysis proves that the supply pressure has a great influence on the dynamic characteristic of the HSV. Both simulation and experiment results achieve the expected effects of the presented control strategy. Compared to the single voltage driving method, the results show that when supply pressure changes from 5 MPa to 20 MPa, the presented control algorithm can effectively shorten the total switching time by 56.9%-75.8%, expand the controllable duty cycle range by 45.9%-240.6%, and improve the maximum operation frequency of HSV by 161.0%-637.5%. What’s more, the change ranges of both total switching time and controllable duty ratio can be remained within 2.1%, and the difference coefficient of maximum operation frequency is less than 4.6%.

Key words: high speed on/off valve, supply pressure changes, dynamic performance preservation, switching time, controllable duty ratio, maximum operation frequency

中图分类号:

TH137

钟麒, 何贤剑, 李研彪, 张斌, 杨华勇, 陈波. 自适应供油压力变化的高速开关阀控制策略研究[J]. 机械工程学报, 2021, 57(6): 224-235.

ZHONG Qi, HE Xianjian, LI Yanbiao, ZHANG Bin, YANG Huayong, CHEN Bo. Research on Control Algorithm for High-speed on/off Valves that Adaptive to Supply Pressure Changes[J]. Journal of Mechanical Engineering, 2021, 57(6): 224-235.

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自适应供油压力变化的高速开关阀控制策略研究

Research on Control Algorithm for High-speed on/off Valves that Adaptive to Supply Pressure Changes

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