Switching from velocity to force control for the electro-hydraulic servosystem based on LPV system modeling

Takahiro Sugiyama, Kenko Uchida

Research output: Contribution to journalConference article

1 Citation (Scopus)


In the hydraulic system, it is often that switch the control mode over from one to the other, such as from position to velocity or from velocity to force. In this paper, propose a flow calculation formula for the flow control valve in order to have an LPV system representation. Then, design gain scheduled controllers for the velocity and the force individually. During a switching mode, a control is generated by adding two controller outputs with appropriate ratios. Usefulness of this approach is shown by the experiment results, which are obtained from Injection molding machine application.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Issue number1
Publication statusPublished - 2002 Jan 1
Externally publishedYes
Event15th World Congress of the International Federation of Automatic Control, 2002 - Barcelona, Spain
Duration: 2002 Jul 212002 Jul 26



  • Electro-hydraulic systems
  • H-infinity
  • Injection molding
  • LPV system
  • Switching algorithms

ASJC Scopus subject areas

  • Control and Systems Engineering

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