Failure Detection by signal similarity measurement of Brushless DC motors

• Autores: Vito Mario Fico
• Directores de la Tesis: María Ángeles Martín Prats (dir. tes.), Antonio Leopoldo Rodríguez Vázquez (dir. tes.)
• Lectura: En la Universidad de Sevilla ( España ) en 2019
• Idioma: español
• Número de páginas: 90
• Tribunal Calificador de la Tesis: Manuel José Freire Rosales (presid.), Juan de la Cruz García Ortega (secret.), Franco Bernelli-Zazzera (voc.), Andres Jimenez Olazabal (voc.), Pablo Millan Gata (voc.)
• Programa de doctorado: Programa de Doctorado en Ingeniería Automática, Electrónica y de Telecomunicación por la Universidad de Sevilla
• Materias:
  • Física
    • Electrónica
• Enlaces
  • Tesis en acceso abierto en: Idus
• Resumen

  • During the last years the Brushless DC (BLDC) motors are gaining popularity as a solution for providing mechanical power, starting from low cost mobility solutions like the electric bikes, to high performance and high reliability aeronautical Electro-Mechanical Actuators (EMAs). In this framework, the availability of fault detection tools suited for these types of machines appears necessary.

    There is already a vast literature on this topic, but only a small percentage of the proposed techniques are developed to a Technology Readiness Level (TRL) sufficiently high to be implementable in industrial applications. The investigation on the state of the art carried out during the first phase of the present work, tries to collect the articles which are closer to a possible implementation. This selection has been carefully done with the definition of a series of rules, drawn to represent the adequate level of readiness of fault detection techniques which the various articles propose.

    In the second part of the thesis, a partial demagnetisation detection method is proposed. This technique takes advantage of the asymmetries generated by the missing magnetic flux in the current to detect the failure. Both simulations and laboratory experiments have been carried out to validate the idea.

    Then, the results have been examined in detail and satisfactory conclusions have been drawn.