In this paper we show that, when the rotor position is not measured in (nonsalient-pole surface) PMSMs with unknown constant load torque and stator resistance (with the rotor speed being available along with the stator currents), it is possible to guarantee exponential rotor position tracking and-mainly-regulation without resorting to persistency of excitation conditions which involve a non-definitely zero rotor speed reference. A new output feedback control is accordingly designed, which relies on a novel adaptive observer. The only price to be paid is constituted by a non-constant reference for the stator current vector d-component.
Nonlinear adaptive control for position-sensorless permanent magnet synchronous motors with uncertainties / Verrelli, Cristiano Maria; Tomei, Patrizio; Lorenzani, Emilio. - (2016), pp. 2392-2397. (Intervento presentato al convegno 2016 European Control Conference, ECC 2016 tenutosi a Aalborg; Denmark nel 29 June 2016) [10.1109/ECC.2016.7810648].
Nonlinear adaptive control for position-sensorless permanent magnet synchronous motors with uncertainties
LORENZANI, EMILIO
2016
Abstract
In this paper we show that, when the rotor position is not measured in (nonsalient-pole surface) PMSMs with unknown constant load torque and stator resistance (with the rotor speed being available along with the stator currents), it is possible to guarantee exponential rotor position tracking and-mainly-regulation without resorting to persistency of excitation conditions which involve a non-definitely zero rotor speed reference. A new output feedback control is accordingly designed, which relies on a novel adaptive observer. The only price to be paid is constituted by a non-constant reference for the stator current vector d-component.Pubblicazioni consigliate
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