Design, Implementation and Evaluation of a Pump-Controlled Circuit for Single Rod Actuators
AbstractPump-controlled hydraulic circuits are more efficient than valve-controlled circuits, as they eliminate the energy losses due to flow throttling in valves and require less cooling effort. Presently existing pump-controlled solutions for single rod cylinders encounter an undesirable performance during certain operating conditions. This paper investigates the performance issues in common pump-controlled circuits for the single rod actuators. Detailed analysis is conducted that identifies these regions in a load-velocity plane and the factors affecting them. The findings are validated by experimental results. A new design is then proposed that employs a limited throttling valve alongside two pilot operated check valves for differential flow compensation to improve the performance. The valve is of the flow control type and is chosen to have a throttling effect over critical regions; it has the least throttling over other operating regions, thus maintaining efficiency. Experimental work demonstrates improved performance in a full operating range of the actuator as compared to a circuit that uses only the pilot-operated check valves. This circuit is energy efficient and capable of recuperating energy. View Full-Text
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Imam, A.; Rafiq, M.; Jalayeri, E.; Sepehri, N. Design, Implementation and Evaluation of a Pump-Controlled Circuit for Single Rod Actuators. Actuators 2017, 6, 10.
Imam A, Rafiq M, Jalayeri E, Sepehri N. Design, Implementation and Evaluation of a Pump-Controlled Circuit for Single Rod Actuators. Actuators. 2017; 6(1):10.Chicago/Turabian Style
Imam, Ahmed; Rafiq, Moosa; Jalayeri, Ehsan; Sepehri, Nariman. 2017. "Design, Implementation and Evaluation of a Pump-Controlled Circuit for Single Rod Actuators." Actuators 6, no. 1: 10.
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