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Boom Motion Control Using Pressure Control Valve

[+] Author Affiliations
Jesper K. Sørensen, Michael R. Hansen, Morten K. Ebbensen

University of Agder, Grimstad, Norway

Paper No. FPNI2014-7853, pp. V001T05A009; 7 pages
doi:10.1115/FPNI2014-7853
From:
  • 8th FPNI Ph.D Symposium on Fluid Power
  • 8th FPNI Ph.D Symposium on Fluid Power
  • Lappeenranta, Finland, June 11–13, 2014
  • Conference Sponsors: Fluid Power Net International (FPNI), Lappeenranta University of Technology, Finland
  • ISBN: 978-0-7918-4582-0
  • Copyright © 2014 by ASME

abstract

This paper focuses on the reduction in oscillations created by counterbalance valves by using a proportional pressure control valve. The motion control of a cylinder boom is presented using this valve, which is a 4/3-way directional control valve with the main spool in series with an upstream compensator. The input to the valve control is a main spool position reference and, indirectly, the compensator downstream pressure. This gives a different flow gain and, therefore, a different feedforward scheme as compared to applications with the more common pressure compensated flow control valve.

The theory behind the pressure control valve is presented and applied to both a theoretical and experimental implementation of closed loop motion control of the jib boom of a commercial vehicle loader crane.

Copyright © 2014 by ASME

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