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This paper proposes a novel method for decreasing the undesirable torque-vibration of a 2-phase servomotor in an unbalanced-drive condition. The cancellation is achieved by superposing odd harmonic signals on the voltage applied to the control winding. A testrun indicated that the vibration on the shaft could be reduced to ? by cancelling the second and the fourth harmonic components.
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Kurokui et al. (1979) studied this question.
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