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Development of variable speed hydraulic measuring and control experimental platform
Published:2021-06-23 author:LIU Yong1,2, GU Li-chen3 Browse: 928 Check PDF documents
Development of variable speed hydraulic measuring and control experimental platform

LIU Yong1,2, GU Li-chen3

(1.School of Mechanical Engineering, Hubei University of Automotive Technology, Shiyan 442002, China;2.School of 
Construction Machinery, Chang'an University, Xi'an 710064, China;
3.School of Mechanical-Electronic Engineering, 
Xi'an University of Architecture and Technology, Xi'an 710054, China)

Abstract: Aiming at the need of openness and extensibility with the teaching and scientific research, the variable speed hydraulic measuring and control experimental platform was designed. The parts of the hardware, electric control and structure of the measuring and control system were designed on the experimental platform. With the industrial control computer and the LabVIEW software, the physical quantities such as the hydraulic motor speed, system flow and pressure, was measured and controlled by the developed program. The designed hydraulic motor speed closed-loop PID control experiment was taken as an example, and the principle of this control mode was studied. The experiment was validated when the hydraulic motor targets speed step changed and the load was constant. The experimental results indicate that the actual value can be well responded to the change of the target and dynamically maintained near the target. The experimental platform has good openness and extensibility, and it can meet the need of the teaching and scientific research.

Key words: variable speed; hydraulic experiment platform; testing and control system based on industrial computer; hydraulic motor speed; PID closed-loop control

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