自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 27    No. 9    September 2020

[PDF Download]    [Flash Online]

    

Pressure performance improvement by dual-mode control in digital pump/motor
LI Chun-shuang(李春爽)1, WANG Xin(王昕)1, 2, QI Hai-bo(齐海波)1, LIU Xin-yu(刘新宇)2, LIU Xin-hui(刘昕晖)1

1. School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China;
2. Department of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S 2E8, Canada

Abstract:Due to the advantages of low cost, fast response and pollution resistance, digital hydraulic pump/motor can replace conventional variable hydraulic pump/motor in many application fields. However, digital hydraulic components produce large hydraulic impact at variable moments, which will shorten the service life of mechanical components. Through the simulation analysis of the variable process of digital pump/motor, it is found that the discontinuous flow caused by displacement step changes is the fundamental cause of hydraulic impact. The data analysis results of experimental tests are in good agreement with the simulation analysis results. In view of hydraulic secondary components, a variable control method based on dual-mode operating characteristics is proposed. The TOPSIS algorithm is used to give comprehensive evaluation of the displacement control results after this method. The results show that the control quality of digital pump/motor after adopting the control method has been effectively improved, with an average improvement of about 40%.

 

Key words: digital hydraulic; dual-mode operating characteristics; AMESim simulation; TOPSIS algorithm

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号