Enabling Passive Load-Holding Function and System Pressures Control in a One-Motor-One-Pump Motor-Controlled Hydraulic Cylinder: Simulation Study

Wei Zhao (), Morten Kjeld Ebbesen, Michael Rygaard Hansen and Torben Ole Andersen
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Wei Zhao: Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway
Morten Kjeld Ebbesen: Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway
Michael Rygaard Hansen: Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway
Torben Ole Andersen: Department of Energy Technology, Aalborg University, 9220 Aalborg East, Denmark

Energies, 2024, vol. 17, issue 11, 1-19

Abstract: This paper is concerned with a hydraulic cylinder directly controlled by a variable speed motor-driven fixed-displacement pump. The considered configuration is referred to as a one-motor-one-pump (1M1P) motor-controlled hydraulic cylinder (MCC). A 1M1P MCC with a hydraulically driven passive load-holding function enabled by controlled system pressures is proposed. The proposed load-holding functionality works if there is a standstill command, a loss of power supply, or a hose rupture. Additionally, this paper conducts a comprehensive analysis of the proposed system’s operation and load-holding function across four quadrants. The simulation results demonstrate four-quadrant operation and good load-holding performance under the aforementioned scenarios. In conclusion, the proposed 1M1P MCC can be successfully used on practical applications characterized by overrunning loads and four quadrant operation.

Keywords: motor-controlled hydraulic cylinder; four-quadrant operation; system pressures control; passive load-holding function (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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