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Observer-Based Compensation of Additive Periodic Torque Disturbances in Permanent Magnet Motors

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3 Author(s)
Michael Ruderman ; Inst. of Control Theor. & Syst. Eng. (RST), Tech. Univ. Dortmund, Dortmund, Germany ; Alex Ruderman ; Torsten Bertram

The impact of additive periodic torque disturbances on the controlled motion of permanent magnet motors can be significant. The paper shows how an observer-based drive control can efficiently reject the harmonic torque disturbances providing smooth angular velocity. The proposed control design is based on the state-space torque harmonics representation and Luenberger observer that proved to be adequate. The designed control algorithms are verified using an experimental setup with a permanent magnet synchronous motor with well-detectable torque harmonics. The rejection of additive position periodic torque disturbances is experimentally demonstrated for two first harmonics and that for different angular velocities.

Published in:

IEEE Transactions on Industrial Informatics  (Volume:9 ,  Issue: 2 )