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A friction compensator for pneumatic control valves

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Author

Summary, in English

A procedure that compensates for staticfriction (stiction) in pneumatic control valves is presented.The compensation is obtained by adding pulses tothe control signal. The characteristics of the pulses are determinedfrom the control action. The compensator is implemented inindustrial controllers and control systems, and the industrialexperiences show that the procedurereduces the control error during stick-slip motionsignificantly compared to standard control without stiction compensation.

Publishing year

2002

Language

English

Pages

897-904

Publication/Series

Journal of Process Control

Volume

12

Issue

8

Document type

Journal article

Publisher

Elsevier

Topic

  • Control Engineering

Keywords

  • valves
  • nonlinear dynamics
  • Process control
  • nonlinear control
  • friction

Status

Published

ISBN/ISSN/Other

  • ISSN: 1873-2771