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Precise Speed Control of Direct Drive PMSM for the Cogging Torque Measurement System  

Park, Cheol-Hoon (Intelligent Manufacturing Systems Research Division, KIMM)
Son, Young-Su (Intelligent Manufacturing Systems Research Division, KIMM)
Ham, Sang-Yong (Intelligent Manufacturing Systems Research Division, KIMM)
Kim, Byung-In (Intelligent Manufacturing Systems Research Division, KIMM)
Yun, Dong-Won (Intelligent Manufacturing Systems Research Division, KIMM)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.5, 2009 , pp. 79-86 More about this Journal
Abstract
Recently PMSM(Permanent magnet synchronous motor) are used for the various direct drive applications such as index table, telescope system and so on. Because the position/speed control performance of direct drive PMSM is directly affected by the torque ripple, there are lots of studies to reduce the cogging torque in the motor design stage. In order to verify the motor design, the reliable cogging torque measurement system is essentially required. The measured motor must be rotated in the constant speed under 1deg/sec so that the cogging torque profile is measured correctly. In this study, the cogging torque measurement system which uses the direct drive PMSM and the speed controller to rotate the measured motor in 0.1rpm(0.6deg/sec) has been developed. Simulink/xPC target was used for the controller and data acquisition system. Based on PI controller, DOB and AFC have been applied to eliminate the low frequency disturbances and the periodic speed ripple. The experimental results show the good performance of the speed regulation for the reference speed 0.1rpm and the reliable profile of the measured cogging torque by the developed speed controller.
Keywords
Speed Control; Direct Drive; PMSM; Cogging Torque; DOB; AFC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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