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Hydraulic Cylinder Velocity Control With Energy Recovery: A Comparative Simulation Study

[+] Author Affiliations
Ned A. Troxel, Bin Yao

Purdue University, West Lafayette, IN

Paper No. DSCC2011-6192, pp. 169-176; 8 pages
  • ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control
  • ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 1
  • Arlington, Virginia, USA, October 31–November 2, 2011
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-5475-4
  • Copyright © 2011 by ASME


A valve configuration including a hydraulic accumulator for energy recovery is proposed for velocity control of hydraulic cylinders. A control design incorporating a low-level adaptive robust controller and high-level logic is presented. The benefits of independent cylinder pressure control, regeneration flows, and the proposed energy recovery system are compared. Simulation results show the proposed configuration provides significant energy savings compared to the other system configurations following the same velocity trajectory. An explanation of the advantages of the proposed configuration over previous configurations is given, showing why the proposed configuration makes increased recycling of system flows possible. Results for constant pressure source and a load-sensing pump show that different control objectives are appropriate for different supply pressure setups. Additional applications and further study of the proposed configuration are discussed.

Copyright © 2011 by ASME



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