Active supersonic flow control using hysteresis compensation and error governor

Marina Tharayil, Andrew Alleyne

Research output: Contribution to journalConference article


This paper introduces a novel concept termed Smart Mesoflaps for Aeroelastic Recirculation Transpiration (SMART) for controlling shock/boundary-layer interactions (SBLI) in supersonic jet inlets. The control strategy for a subsystem of the SMART project, subject to hysteresis and actuator saturation, is presented. A Hysteresis Compensation scheme, as well as results from experimental application of HC to the SMART system are presented next. A generalized error governing scheme for PID controllers to compensate for actuator saturations is also developed. Finally, the PID with HC and the error governing method is experimentally applied to a benchtop SMART subsystem and is shown to be successful at preventing excessive control efforts.

Original languageEnglish (US)
Pages (from-to)205-210
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Issue number1
StatePublished - Jan 1 2002
Event15th World Congress of the International Federation of Automatic Control, 2002 - Barcelona, Spain
Duration: Jul 21 2002Jul 26 2002



  • Actuators
  • Aerospace control
  • Control design
  • Error analysis
  • Error control
  • Flow control
  • Hysteresis
  • PID controllers
  • Saturation

ASJC Scopus subject areas

  • Control and Systems Engineering

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