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Author Konghirun, M.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Calibration ♦ Magnetic sensors ♦ Automatic control ♦ Permanent magnet motors ♦ Control systems ♦ Sensor systems ♦ Rotors ♦ Synchronous motors ♦ Manufacturing ♦ Stators
Abstract Quadrature encoder pulse (QEP) sensor has been widely used to detect the rotor position of permanent magnet synchronous motors (PMSMs) in the vector controlled drive systems. However, the information regarding to the angular difference between the index signal and the back emfs of motor (so called the index offset) is sometimes lacked in the manufacturers' datasheets. As a result, by using the incorrect offset, the back emfs are not in phase with the stator currents. Then, the produced electromagnetic torque is not optimal in the vector controlled drive system of PMSM using QEP sensor. This paper presents a practical and simple technique to automatically calibrate this offset. The experimental results will also demonstrate the effects of incorrect offset to the torque production. The overall drive system is implemented on a 32-bit fixed-point digital signal processor based controller (TMS320F2808eZdsp board).
Description Author affiliation: Dept. of Electr. Eng., King Mongkut's Univ. of Technol. Thonburi, Bangkok (Konghirun, M.)
ISBN 0780393112
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-11-21
Publisher Place Australia
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 209.60 kB
Page Count 5
Starting Page 1
Ending Page 5

Source: IEEE Xplore Digital Library