An efficient, compact and low-cost Dual Cylinder Hydrostatic Actuator (DCHA)

  • Travis Wiens Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada
Keywords: energy recovery, hydrostatic, pump control, Efficiency

Abstract

Pump-controlled systems are highly efficient alternatives to the high throttling losses of valvecontrolled systems. Closed-circuit systems have been widely adopted for rotary loads, but the asymmetrical nature of linear actuators has limited their acceptance. Hydrostatic linear actuators typically are costly or complex, inefficient or exhibit low force density. This paper presents a Dual Cylinder Hydrostatic Actuator, which is highly efficient for both resistive and overrunning loads, uses commercially available low-cost components, and provides the same high force of a conventional system in a similarly sized system. A steady-state model is presented, along with an experimental validation on a small-scale apparatus. An analysis of a full-scale application is performed, including strategies for mitigation of energy losses.

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Author Biography

Travis Wiens, Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada

Travis Wiens, PhD, PEng, is an assistant professor in the Department of Mechanical Engineering at the University of Saskatchewan. Prior to rejoining academia, he served as a consultant to the fluid power industry, particularly in the design of construction, forestry and mining equipment. His current research interests revolve around efficiency of hydraulic equipment, including pump-controlled architectures and digital hydraulics.

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Published
2018-08-01
How to Cite
Wiens, T. (2018). An efficient, compact and low-cost Dual Cylinder Hydrostatic Actuator (DCHA). International Journal of Fluid Power, 19(2), 80-90. https://doi.org/10.1080/14399776.2018.1437321
Section
Original Article