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BRUSHLESS MOTOR APPARATUS SETTING MASK PERIOD ON THE BASIS OF COMPARISON BETWEEN VOLTAGE OF SPECIFIC COIL AND VOLTAGE OF COIL OTHER THAN THE SPECIFIC COIL
BRUSHLESS MOTOR APPARATUS SETTING MASK PERIOD ON THE BASIS OF COMPARISON BETWEEN VOLTAGE OF SPECIFIC COIL AND VOLTAGE OF COIL OTHER THAN THE SPECIFIC COIL
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机译:基于特定线圈电压与特定线圈以外的线圈电压之间的比较的无刷电机装置设置掩码周期
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摘要
In a brushless motor apparatus, a brushless motor has a rotor and Y-connected coils, and a controller has an inverter circuit selectively driving the coils. The controller detects an induced voltage generated in a specific coil which is not driven by the inverter circuit while the rotor rotates. The controller acquires a positional signal of the rotor on a basis of a timing at which the induced voltage reaches the reference value. The timing is obtained through comparison between the detected induced voltage and a reference value. The controller switches a coil driven by the inverter circuit on a basis of the positional signal, and sets a mask period on a basis of a result of comparison between voltage of the specific coil and a coil other than the specific coil. The comparison between the induced voltage and the reference value is not executed in the mask period.
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