Open AccessMechanism Modeling and Simulink Simulation Analysis of Digital Hydraulic Cylinder
Author(s) -
Chengbin Ma,
Feng Li,
Lin Hao,
Yangyang Han
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1624/2/022010
Subject(s) - hydraulic cylinder , cylinder , stepper , hydraulic machinery , mechanism (biology) , control theory (sociology) , stepper motor , control valves , hydraulic fluid , oil pressure , hydraulic motor , position sensing hydraulic cylinder , computer science , mechanical engineering , engineering , simulation , control engineering , physics , control (management) , quantum mechanics , artificial intelligence , optics
Based on the structure of the digital hydraulic cylinder and the principle of closed-loop control, the mechanism models of the stepper motor and the spool mechanism, the three-way spool valve, and the hydraulic cylinder are established respectively, and the overall mathematical model of the digital hydraulic cylinder is synthesized, and its Simulink simulation model is constructed. The stability and positioning accuracy of the system are analyzed. The results show that the error of this type of digital hydraulic cylinder is 0.0142mm for 1mm action and 0.0182mm for 2mm action. At the same time, it is found that the fluctuation of oil supply pressure will cause system jitter and reducing the frequency of stepper motor can improve the positioning accuracy of the cylinder.