ステッピング駆動におけるPMモ-タの逆転現象

概要

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One of the most important design problem of the permanent magnet (PM) motor is the reverse rotation. The conditions for the reverse rotation with a square-wave drive are investigated experimentally. Relations between the applied voltage and the pulse rate fp at which the probability Pb of the reverse rotation takes a maximum are discussed. Effects of the initial rotor position δ and the delay-time td of the first pulse on the value of Pb are discussed. Calculations of reverse rotating performance are made with various conditions, and clarified the mechanism of the reverse rotation.