Naseem Daher
School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
Chuang Wang
School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
Monika Ivantysynova
School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
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http://dx.doi.org/10.3384/ecp1392a54Published in: 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Linköping Electronic Conference Proceedings 92:54, p. 541-552
Published: 2013-09-09
ISBN: 978-91-7519-572-8
ISSN: 1650-3686 (print), 1650-3740 (online)
Improving machine efficiency remains a top priority in the industrial and academic communities given the ever increasing demand on fossil fuels and their skyrocketing prices. Pump displacement controlled (DC) actuation is an energy efficient alternative to traditional valve controlled actuators. The technology has shown significant fuel savings on mobile machinery when used for the working hydraulics (implement) functions of such machines. However; DC actuation has not been investigated for use on mobile machinery chassis systems; namely power steering. In this paper; a novel closed-circuit displacement control system architecture is devised to perform the functions of a power steering system used on articulated steering vehicles. A high-fidelity multi-domain dynamic model of the vehicle is generated to corroborate concept feasibility; perform system sizing and analysis; and predict overall performance. Simulation results have shown that a displacement controlled power steering system is realizable despite of certain challenges; which upon further ongoing research will be brought to life and tested on a prototype machine
[1] Azad; N. Dynamic Modelling and Stability Controller Development for Articulated Steer Vehicles. Ph.D. dissertation; University of Waterloo. Waterloo; Ontario; Canada. 2006.
[2] Chen; C. and Tomizuka; M. Modeling and Control of Articulated Vehicles. Report number UCB-ITS-PRR-97-42; California Partners for Advanced Transit and Highways; Institute of Transportation Studies; Berkeley; California. 1997.
[3] Crolla D. Automotive Engineering: Powertrain; Chassis System and Vehicle Body. Elsevier Science & Technology Books. Burlington; MA. 2009.
[4] Daher; N. and Ivantysynova; M. Electro-hydraulic energy-saving power steering systems of the future. Proceedings of the 7th FPNI PhD Symposium; Reggio Emilia; Italy; pp. 929 – 952. 2012.
[5] Greenwood; D. Principles of Dynamics. Prentice-Hall; Inc.; Englewood Cliffs; New Jersey. 1988.
[6] Horton D.N.L. and Crolla D.A. Theoretical analysis of the steering behaviour of articulated frame steer vehicles. Vehicle System Dynamics; vol. 15; pp. 211—234. 1986.
[7] Merritt; H.E. Hydraulic Control Systems. John Wileys and Sons; Cincinnati; Ohio. 1967
[8] Milliken; W.F. and Milliken; D.L. Race Car Vehicle Dynamics. SAE International. 1995.
[9] Rahmfeld; R. Development and Control of Energy Saving Hydraulic Servo Drives for Mobile Systems. Ph.D. Thesis. Dept. of Aircraft Systems; Technical University of Hamburg-Harburg. Hamburg; Germany. 2002.
[10] Rahmfeld; R. and Ivantysynova; M. Energy Saving Hydraulic Actuators for Mobile Machines. Proceedings of 1st Bratislavian Fluid Power Sysmposium; pp. 47-57. Castá – Píla; Slovakia. 1998
[11] Rahmfeld; R. and Ivantysynova; M. Displacement Controlled Wheel Loader – a simple and clever Solution. 4th International Fluid Power Conference Proceedings; pp. 183-196. Dresden; Germany. 2004.
[12] Williamson; C.; Zimmerman; J.; and Ivantysynova; M. Efficiency Study of an Excavator Hydraulic System Based on Displacement-Controlled Actuators. ASME/Bath Workshop on Fluid Power and Motion Control (FPMC08). Bath; UK. 2008.
[13] Williamson; C and Ivantysynova; M. Power Optimization for Multi-Actuator Pump-Controlled Systems. Proceedings of the 7th International Fluid Power Conference Aachen 2010 (7IFK); Vol 1. pp.91 -102. 2010.
[14] Wittren; R.A. Power Steering For Agricultural Tractors. American Society of Agricultural Engineers; Winter Meeting Distinguished Lecture Series. Chicago; IL; USA. 1975.
