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“A model for torque losses in variable displacement axial piston motors”

Authors: Geir-Arne Moslått, Michael R. Hansen and Nicolai Sand Karlsen,
Affiliation: National Oilwell Varco, University of Agder and Bosch Rexroth
Reference: 2018, Vol 39, No 2, pp. 107-114.

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Keywords: Hydraulics, torque loss, axial piston motor, winch drive, offshore knuckle boom cranes, Bosch Rexroth

Abstract: This paper includes a comparison of earlier presented models for torque losses in hydraulic motors and several proposed models that all rely on data typically available for a system engineer. The new models and the old ones are compared. The new models are all based on a model developed by Jeong 2007 with an expansion that include variable displacement. All of the new models yield very good accuracy down to approximately 50% of maximum displacement and down to approximately 15% of maximum speed. In these operational ranges the deviation in torque is less than 1%. The main purpose of the new models is to facilitate simulations of hydraulically actuated winches with a balance between accuracy and model complexity. This purpose is considered fulfilled with several of the proposed models.

PDF PDF (1767 Kb)        DOI: 10.4173/mic.2018.2.5

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  title={{A model for torque losses in variable displacement axial piston motors}},
  author={Moslått, Geir-Arne and Hansen, Michael R. and Karlsen, Nicolai Sand},
  journal={Modeling, Identification and Control},
  publisher={Norwegian Society of Automatic Control}


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