**Page description appears here**

“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.

     Valid XHTML 1.0 Strict


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





References:
[1] Bosch Rexroth AG. (2010). Bosch Rexroth AG, Sales Information, Axial Piston Units. 2010. .
[2] Dorey, R. (1988). Dorey, R, Modelling of losses in pumps and motors. First Bath International Fluid Workshop. www.scopus.com. .
[3] Huhtala, K. and Villenius, M. (1997). Huhtala, K, and Villenius, M. Comparison of Steady-State Models of Hydraulic Pump. 1997. .
[4] Jeong, H.-S. (2007). Jeong, H, -S. A novel performance model given by the physical dimensions of hydraulic axial piston motors: model derivation. Journal of Mechanical Science and Technology. 21(1):83--97. doi:10.1007/BF03161714
[5] Jeong, H.S. and Kim, H.E. (2007). Jeong, H, S. and Kim, H.E. A novel performance model given by the physical dimensions of hydraulic axial piston motors: Experimental analysis. Journal of Mechanical Science and Technology. 21(4):630--641. doi:10.1007/BF03026968
[6] Ortwig, H. (2002). Ortwig, H, New Method of Numerical Calculation of Losses and Efficiencies in Hydrostatic. SAE International Off-Highway Congress. (724). .
[7] Pacey, D.A., Turnquist, R.O., and Clark, S.J. (1979). Pacey, D, A., Turnquist, R.O., and Clark, S.J. The development of a coefficient model for hydrostatic transmissions. In In: Proc.35th Nat.conf.on Fluid Power, volume33. 35th National Conference in Fluid Power, Chicago, pages 173--178. www.scopus.com. .
[8] Schlosser, W. (1961). Schlosser, W, Mathematical model for displacement pump and motors part 2. In Hydraulic power transmission, pages 324--328. London. .
[9] Thoma, J. (1969). Thoma, J, Mathematical models and effective performance of hydrostatic machines and transmission. Hydraulic and Pneumatic Power. pages 642--651. www.scopus.com. .
[10] Wilson, W. (1948). Wilson, W, Performance criteria for positive displacement pumps and fluid motors. In ASME Semi-annual Meeting, paper No. 48-SA-14. 1948. .


BibTeX:
@article{MIC-2018-2-5,
  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},
  volume={39},
  number={2},
  pages={107--114},
  year={2018},
  doi={10.4173/mic.2018.2.5},
  publisher={Norwegian Society of Automatic Control}
};

News

Oct 2018: MIC reaches 3000 DOI Forward Links. The last 1000 took 2 years and 5 months.


May 2016: MIC reaches 2000 DOI Forward Links. The first 1000 took 34 years, the next 1000 took 2.5 years.


July 2015: MIC's new impact factor is now 0.778. The number of papers published in 2014 was 21 compared to 15 in 2013, which partially explains the small decrease in impact factor.


Aug 2014: For the 3rd year in a row MIC's impact factor increases. It is now 0.826.


Dec 2013: New database-driven web-design enabling extended statistics. Article number 500 is published and MIC reaches 1000 DOI Forward Links.


Jan 2012: Follow MIC on your smartphone by using the RSS feed.

Smartphone


July 2011: MIC passes 1000 ISI Web of Science citations.


Mar 2010: MIC is now indexed by DOAJ and has received the Sparc Seal seal for open access journals.


Dec 2009: A MIC group is created at LinkedIn and Twitter.


Oct 2009: MIC is now fully updated in ISI Web of Knowledge.