Experimental platform for electro-hydraulic servo closed pump control system

CHEN Ge-xin1, LIU Hui-long1, ZHAO Peng-hui1, YAN Gui-shan1, AI Chao2,3
(1.School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004，China; 2.Hebei Provincial Key
Laboratory of Parallel Robot and Mechatronic System, Yanshan University, Qinhuangdao 066004，China; 3.Hebei
Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Qinhuangdao 066004, China)

Abstract: In order to laid an experimental foundation for the in-depth study of the key disciplines of the electro-hydraulic servo closed pump control system, a design scheme of the experimental platform of the electro-hydraulic servo closed pump control system based on the working principle of the traditional electro-hydraulic servo pump control system was proposed. Double displacement radial piston pump was adopted to replace the quantitative gear pump, and mode switching module and safety unloading module were added. The electro-hydraulic servo closed pump control technology was used to build the electrical principle framework and system program control framework of the experimental platform, and the control interface of the experimental platform was designed. Completed motion controller programming in Moog MACS axial control software based on the theoretical design, the hydraulic and electrical parts of the experimental platform were put into practice. The experimental results show that the experimental platform can realize the data acquisition of key variables such as displacement, pressure and motor speed, which can provide an experimental basis for the in-depth study of the electro-hydraulic servo closed pump control system.
Key words: hydraulic transmission; electro-hydraulic servo; closed pump control; experimental platform