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Two-Stage Control Design of a Buck Converter/DC Motor System without Velocity Measurements via a -Modulator

Author

Listed:
  • R. Silva-Ortigoza
  • J. R. García-Sánchez
  • J. M. Alba-Martínez
  • V. M. Hernández-Guzmán
  • M. Marcelino-Aranda
  • H. Taud
  • R. Bautista-Quintero

Abstract

This paper presents a two-stage control design for the “Buck power converter/DC motor” system, which allows to perform the sensorless angular velocity trajectory tracking task. The differential flatness property of the DC-motor model is exploited in order to propose a first-stage controller, which is designed to achieve the desired angular velocity trajectory. This controller provides the voltage profiles that must be tracked by the Buck converter. Then, a second-stage controller is meant to assure the aforementioned. This controller is based on flatness property of the Buck power converter model, which provides the input voltage to the DC motor. Due to the fact that the two-stage controller proposed uses the average model of the system, as a practical and effective implementation of this controller, a -modulator is employed. Finally, in order to verify the control performance of this approach, numerical simulations are included.

Suggested Citation

  • R. Silva-Ortigoza & J. R. García-Sánchez & J. M. Alba-Martínez & V. M. Hernández-Guzmán & M. Marcelino-Aranda & H. Taud & R. Bautista-Quintero, 2013. "Two-Stage Control Design of a Buck Converter/DC Motor System without Velocity Measurements via a -Modulator," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-11, June.
    • Handle: RePEc:hin:jnlmpe:929316
    DOI: 10.1155/2013/929316
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