Paper Info
Title
Online tuning method for current measurement offsets and gain deviations for SPMSM
Abstract
AC servo motors are operated by current sensors. However, these current sensors often exhibit offsets caused by age-related deterioration and thermal variation. Gain deviation also causes current measurement errors. These errors lead to torque ripples and dq-axis current ripples. This paper proposes a new method of estimating and compensating for gain deviation in current measurement using a current simulator. The method uses dq-axis current ripples arising from sensed current and estimated current. Thus, it can be applied in conjunction with a proposed offset estimation method. In this paper, the methods are tested on a surface-mounted permanent magnet synchronous motor, in which the current sensors are arranged in u-phase and w-phase. Simulation and experimental results confirm that the proposed methods suppress current and torque ripples caused by offset and gain deviation in current sensors.
Year
DOI
Venue
2012
10.1109/IECON.2012.6388905
Montreal, QC
Keywords
Field
DocType
compensation,electric current measurement,electric sensing devices,measurement errors,permanent magnet motors,servomotors,surface mount technology,synchronous motors,tuning,ac servo motors,spmsm,age-related deterioration,current estimation,current measurement errors,current measurement offset estimation method,current ripple suppression,current sensors,current simulator,dq-axis current ripples,gain deviation,gain deviation compensation,gain deviation estimation,online tuning method,surface-mounted permanent magnet synchronous motor,thermal variation,torque ripple suppression,torque ripples,u-phase,w-phase
Torque,Synchronous motor,Control theory,Direct torque control,Surface-mount technology,Control engineering,Electronic engineering,Engineering,Offset (computer science),Observational error,Servomotor,Permanent magnet synchronous motor
Conference
ISSN
ISBN
Citations 
1553-572X E-ISBN : 978-1-4673-2420-5
978-1-4673-2420-5
2
PageRank 
References 
Authors
0.40
0
2
Name
Order
Citations
PageRank
Miyamoto, N.120.40
K. Ohishi2688.09