DERIVATION OF DESIGN REQUIREMENTS FOR OPTIMIZATION OF A HIGH PERFORMANCE HYDROSTATIC ACTUATION SYSTEM

Authors

  • Saeid R. Habibi Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, Canada S7N 5A9
  • Gurwinder Singh Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, Canada S7N 5A9

Keywords:

hydrostatic, electro-hydraulic actuation, robotics

Abstract

The competitive global market dictates greater quality of product models produced at lower cost and in shorter dura-tion. During the past two decades, the efficiency of production processes and the quality of products have been differen-tiating factors in establishing competitive advantage in mature industries such as fluid power. The survival of such in-dustries is increasingly dependent on their ability of optimizing their component characteristics as well as integrating these in complex subsystems. Reduction of cost of poor quality is thus critical. This cost often originates from inade-quate or sub-optimal design requirements. Mature industries involved in the design and production of complex systems, have recognized the importance of design requirements definition in reducing cost and increasing profitability. This paper considers linking of system requirements to design parameters for a high performance actuation system referred to as the Electro Hydraulic Actuator (EHA). EHA is based on the hydrostatic actuation concept. It has been prototyped and has demonstrated a very high level of performance. The mathematical model of EHA is reviewed and used for linking its performance to its design parameters through a set of mathematical functions. The actual and ex-pected performances of the prototype are compared in order to validate the proposed mathematical functions and an improved design is proposed.

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Author Biographies

Saeid R. Habibi, Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, Canada S7N 5A9

Saeid Habibi obtained his Ph.D. in Control Engineering and Robotics from University of Cambridge, U.K. He spent a number of years in industry as a Project Manager and Senior Consultant for Cambridge Control Ltd, U.K. and as Manager of Systems Engineering for Allied Signal Aerospace Canada. He received 2 corporate recognition awards for his contributions to the Allied Signal Systems Engineering Process in 1996 and 1997. He was the recipient of the Institution of Electric Engi-neers (IEE) F.C. Williams best paper award in 1992. His academic background includes re-search into design and analysis of hydraulic actuation systems, sensors and instrumentation, and advanced multivariable control. He is on the Editorial Board of the Transactions of the Cana-dian Society of Mechanical Engineers and is a member of IEEE. He is currently an Associate Professor in Mechanical Engineering at the University of Saskatchewan, Canada.

Gurwinder Singh, Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, Canada S7N 5A9

Gurwinder Singh was born in Punjab, a northwest province of India. He received the B.E. degree in mechanical engineering from Guru Nanak Dev Engineering College affiliated to "Punjab Technical Universi-ty", India, in 1998. He joined the University of Saskatchewan, Saskatoon, Canada in September 1998, where he is currently pursuing the M.Sc. degree in mechanical engineering. His research interest includes closed loop control systems, multi-objective design optimization & evolution-ary programming.

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Published

2000-10-01

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Original Article