In the past few years, direct-driven hydraulic drive (DDH) has synthesized the advantages of compact high power of the hydraulic system and flexible control of the electric motor. This paper investigates the direct-driven hydraulic setup for the non-road mobile machinery (NRMM) application. In the proposed setup, the speed and position control of a double-acting cylinder is implemented directly with a Synchronous Torque Motor drive in a close-loop system without conventional control valves and oil tank. In relation to this, hydraulic accumulator is employed as a replacement of the conventional oil tank. For position and speed control of this closed-loop system, only single feedback is applied from motor’s rotor encoder. As a result, excellent control capabilities of a modern electric drive brings along safety functions and monitoring capabilities of the motor and controller to benefit the hydraulic system. Functionalities of motor controllers offer opportunities to duplicate conventional sensors based on either safety or reliability demands. The system is investigated by means of measurements and also simulation models.
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ASME/BATH 2014 Symposium on Fluid Power and Motion Control
September 10–12, 2014
Bath, United Kingdom
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-4597-4
PROCEEDINGS PAPER
Direct-Driven Hydraulic Drive Without Conventional Oil Tank Available to Purchase
Matti Pietola
Matti Pietola
Aalto, Espoo, Finland
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Tatiana A. Minav
Aalto, Espoo, Finland
Panu Sainio
Aalto, Espoo, Finland
Matti Pietola
Aalto, Espoo, Finland
Paper No:
FPMC2014-7834, V001T01A022; 6 pages
Published Online:
November 20, 2014
Citation
Minav, TA, Sainio, P, & Pietola, M. "Direct-Driven Hydraulic Drive Without Conventional Oil Tank." Proceedings of the ASME/BATH 2014 Symposium on Fluid Power and Motion Control. ASME/BATH 2014 Symposium on Fluid Power and Motion Control. Bath, United Kingdom. September 10–12, 2014. V001T01A022. ASME. https://doi.org/10.1115/FPMC2014-7834
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