DEVICE FOR DETECTING ROTATION DIRECTION AND METHOD FOR DETECTING ROTATION DIRECTION OF MOTOR, AND MOTOR CONTROL DEVICE
A rotation direction detecting device has a current detector detecting the direction of current flowing through a motor, a voltage detector detecting voltages before and after the motor in a power supply line, and a rotation direction detector detecting the rotation direction of the motor based on t...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
25.06.2020
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Subjects | |
Online Access | Get full text |
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Summary: | A rotation direction detecting device has a current detector detecting the direction of current flowing through a motor, a voltage detector detecting voltages before and after the motor in a power supply line, and a rotation direction detector detecting the rotation direction of the motor based on the direction of the current and the voltages before and after the motor. The current detector is connected to points A, B before and after a shunt resistor, and detects the direction of the current flowing in the power supply line to form current direction information. The voltage detector is connected to points A, C before and after the motor, and detects the voltage at each position to form motor terminal voltage information. The rotation direction detector detects the rotation direction of the motor using a logical combination of the current direction information and the motor terminal voltage information. |
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Bibliography: | Application Number: US201816645494 |