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.
Persistency of excitation and position-sensorless control of permanent magnet synchronous motors / Verrelli, Cristiano Maria; Tomei, Patrizio; Lorenzani, Emilio. - In: AUTOMATICA. - ISSN 0005-1098. - 95:(2018), pp. 328-335. [10.1016/j.automatica.2018.05.004]
Persistency of excitation and position-sensorless control of permanent magnet synchronous motors
Lorenzani, Emilio
2018
Abstract
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.
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