张宏

(教授)

 硕士生导师
学位:博士
性别:女
毕业院校:大连理工大学
所在单位:机械工程学院
电子邮箱:jxzh@dlut.edu.cn

Performances analysis of a novel load-sensing hydraulic system with overriding differential pressure control

发表时间:2019-03-11 点击次数:

论文名称:Performances analysis of a novel load-sensing hydraulic system with overriding differential pressure control
论文类型:期刊论文
第一作者:Hu Quanyi
通讯作者:Hu, QY (reprint author), Dalian Univ Technol, Sch Mech Engn, Dalian 116024, Peoples R China.
合写作者:Zhang Hong,Tian Shujun,Qin Xuxin
发表刊物:PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
收录刊物:SCIE、EI
卷号:231
期号:23
页面范围:4331-4343
ISSN号:0954-4062
关键字:Load-Sensing; prescribed pressure margin; overriding differential pressure control; bond graph; mode selection; power limit regulation
摘要:The traditional load-sensing hydraulic system is an energy-saving fluid power transmission, which supply on-demand flow at a prescribed pressure margin greater than the highest load pressure of the system. In this paper, a novel load-sensing system that has a variable pressure margin through overriding differential pressure control via integrating an electro-proportional three-way type pressure reducing valve into the hydro-mechanical load-sensing valve is proposed. Also, a bond graph model taking into account the dynamic characteristics of load-sensing valve and load-sensing path is constructed, and three group experiments are performed to verify the validation of the model. Based on the bond graph model, a series of theoretical simulations are carried out to prove that the proposed Load-Sensing system enables a satisfactory balance between energy efficiency and rapid dynamic response over a wide range of operating conditions. In addition, due to overriding differential pressure control, mode selection and power limit regulation can also be achieved.
发表时间:2017-12-01