An automatic torque ripple compensation system for direct drive motors | Zendy

Sato Hirokazu | Zendy; Makino Tatsuo | Zendy; Matsui Nobuyuki | Zendy

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An automatic torque ripple compensation system for direct drive motors

Author(s) -

Sato Hirokazu,

Makino Tatsuo,

Matsui Nobuyuki

Publication year - 1993

Publication title -

electrical engineering in japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.136

H-Index - 28

eISSN - 1520-6416

pISSN - 0424-7760

DOI - 10.1002/eej.4391130614

Subject(s) - control theory (sociology) , torque ripple , direct torque control , torque motor , stall torque , torque , damping torque , rotor (electric) , torque limiter , switched reluctance motor , computer science , servomotor , engineering , control engineering , induction motor , physics , mechanical engineering , electrical engineering , control (management) , artificial intelligence , voltage , thermodynamics

A serious problem in motion control is the occurrence of torque ripple. Since a direct drive (DD) motor with a magnet rotor uses a rare‐earth magnet, the torque ripple is more serious than that of conventional servomotors. This paper presents an auto‐compensation of torque ripple using a software‐implemented torque observer. The frequency and amplitude of torque ripple can be obtained in the controller by using the estimated torque from an observer, and the autonomous generation of a compensating current component for a torque ripple is possible. The proposed algorithm has been verified by experiments.

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