Persistency of excitation and position-sensorless control of permanent magnet synchronous motors

• Autores: Cristiano Maria Verrelli, Patrizio Tomei, Emilio Lorenzani
• Localización: Automatica: A journal of IFAC the International Federation of Automatic Control, ISSN 0005-1098, Nº. 95, 2018, págs. 328-335
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this brief, the exponential rotor position tracking/regulation problem for position-sensorless (nonsalient-pole surface) PMSMs with unknown constant load torque and stator resistance is addressed. The requirement of persistency of excitation conditions involving a non-definitely zero rotor speed reference is removed, owing to the design of an innovative (speed measurement-based) adaptive observer that relies on a local version of the persistency of excitation lemma and does not involve straightforward adaptations of previous ideas.