期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：242
期号：3
页码：1-7
DOI：10.1088/1755-1315/242/3/032033
出版社：IOP Publishing
摘要：In the speed control loop of hydraulic system, the unstable speed of hydraulic cylinder and hydraulic impact often occur, which makes the hydraulic machinery unable to work normally. In this paper, the causes of unstable motion of hydraulic cylinder are analysed from the following aspects: the load of throttle speed control loop varies greatly, the pressure difference between front and back of speed control valve is too small, and the hydraulic impact occurs when the speed is changed. Specific improvement methods are put forward.
