An adaptive structure based sensorless position estimator for permanent magnet machines in aerospace applications

William Drury, Derrick Holliday, David Drury, Philip Mellor

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)


A sensorless position estimation scheme based on a modified model reference adaptive structure, and designed specifically for a permanent magnet machine used in an aerospace application, is developed and verified experimentally. The technique, based on two flux models, avoids the need for differentiation and incorporates an adaptation method that compensates integrator wind-up and drift. The method is computationally efficient and is robust to parameter variation. Experimental results show position estimation is accurate to within 3degmech enabling the machine to operate with 1% torque ripple.
Original languageEnglish
Title of host publicationIEEE International electric machines and drives conference, 2009. IEMDC '09. Proceedings
Place of PublicationNew York
Number of pages6
ISBN (Print)9781424442515
Publication statusPublished - 2009
EventIEEE International Electric Machines and Drives Conference 2009 (IEMDC '09) - Miami, United States
Duration: 3 May 20096 May 2009


ConferenceIEEE International Electric Machines and Drives Conference 2009 (IEMDC '09)
Country/TerritoryUnited States


  • sensorless control
  • permanent magnet machine
  • adaptive control
  • MRAC
  • adaptive structure based
  • sensorless position estimator
  • permanent magnet machines
  • aerospace applications
  • actuators
  • voltage
  • torque
  • stators
  • robustness
  • phase estimation
  • current measurement
  • aerospace engineering
  • aerospace electronics

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