Title :
Adaptive observer for speed sensorless PM motor control
Author :
Rasmussen, H. ; Vadstrup, P. ; Børsting, H.
Author_Institution :
Aalborg Univ., Denmark
Abstract :
This paper presents an adaptive observer for estimating the rotor position and speed of a permanent magnet synchronous motors (PMSM). The observer compensates for voltage offsets and permanent magnet strength variations. The adaptation structure for estimating the strength of the permanent magnet is determined from a Lyapunov stability proof. The observer estimates the stator flux by integration of the measured BEMF signal. In order to verify the applicability of the method the observer has been implemented and tested on a 800 W motor.
Keywords :
Lyapunov methods; angular velocity control; compensation; machine vector control; magnetic flux; observers; parameter estimation; permanent magnet motors; position control; rotors; stators; synchronous motors; 800 W; BEMF signal; Lyapunov stability; PMSM; adaptive observer; field oriented control; permanent magnet synchronous motors; rotor position estimation; rotor speed estimation; speed sensorless PM motor control; stator flux; voltage offsets compensation; Adaptive control; Lyapunov method; Motor drives; Permanent magnet motors; Permanent magnets; Programmable control; Rotors; Stators; Testing; Voltage;
Conference_Titel :
Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the
Print_ISBN :
0-7803-7883-0
DOI :
10.1109/IAS.2003.1257562
