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Bibliografie

Journal Article

Advantages of Square-Root Extended Kalman Filter for Sensorless Control of AC Drives

Šmídl Václav, Peroutka Z.

: IEEE Transactions on Industrial Electronics vol.59, 11 (2012), p. 4189-4196

: CEZ:AV0Z10750506

: Kalman filters, Mathematical model, AC motors

: 10.1109/TIE.2011.2180273

: http://library.utia.cas.cz/separaty/2012/AS/smidl-0436868.pdf

(eng): This paper is concerned with a fixed-point implementation of the extended Kalman filter (EKF) for applications in sensorless control of ac motor drives. The sensitivity of the EKF to round-off errors is well known, and numerically advantageous implementations based on the square-root decomposition of covariance matrices have been developed to address this issue. However, these techniques have not been applied in the EKF-based sensorless control of ac drives yet. Specific properties of the fixed-point implementation of the EKF for a permanent-magnet synchronous motor (PMSM) drive are presented in this paper, and suitability of various square-root algorithms for this case is discussed.

: BC