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Design and research on virtual prototype of electro-hydraulic vibration cylinder controlled by closed-loop digital piston pump
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Design and research on virtual prototype of electro-hydraulic vibration cylinder controlled by closed-loop digital piston pump
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Design and research on virtual prototype of electro-hydraulic vibration cylinder controlled by closed-loop digital piston pump
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Journal Article
Design and research on virtual prototype of electro-hydraulic vibration cylinder controlled by closed-loop digital piston pump
2023
Overview
In order to develop a new electro-hydraulic vibration device with higher efficiency, a digital pump-controlled electro-hydraulic vibration cylinder was proposed based on the closed-loop hydraulic system, and its mathematical model was derived. The virtual prototype model of closed-loop plunger pump-controlled electro-hydraulic vibration cylinder was established and numerically solved and simulated. The numerical calculation results and simulation results were basically consistent. The motion characteristics, closed-loop flow characteristics, vibration waveform characteristics and oil replenishment system characteristics of virtual prototype under mechanical–electrical -hydraulic coupling were studied. The results showed that increasing the inclined angle of swashplate will obviously increase the flow pulsation of the system. Changing the transmission shaft speed (or vibration period) and the inclined angle of swashplate can accurately adjust the vibration frequency and vibration amplitude. Too large or too small flow rate of oil replenishment system will cause vertical offset of vibration waveform, but it has little influence on waveform amplitude, and oil replenishment pressure has little influence on vibration waveform. The electro-hydraulic vibration cylinder based on closed-loop hydraulic system has higher fluid power transmission efficiency. The virtual prototype model can comprehensively predict the performance of the system, verify the feasibility of the scheme, and reduce the cost of experiment and research for further development of physical prototype.
