Stepping motor driving device and driving method
A technology of stepping motors and driving devices, which is applied in the direction of motor generator control, electrical components, control systems, etc., and can solve problems such as power consumption
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[0039] Embodiments of the stepping motor driving device and driving method according to the present invention will be described below with reference to the drawings.
[0040] figure 1 A block diagram showing the structure of a stepping motor drive unit.
[0041] The stepping motor drive device performs torque control by shifting the excitation stable point of the stepping motor 1 in the clockwise or counterclockwise direction relative to the actual rotor position, without controlling using the motor current value.
[0042] The encoder 2 (rotor position detection unit) is provided on the output shaft 1 a of the stepping motor 1 , and detects the rotor position using an output pulse corresponding to the rotation amount of the stepping motor 1 .
[0043] The controller 3 outputs a position command serving as a drive command for the stepping motor 1 . The position command is a rotation command signal composed of CW direction (clockwise) pulse / CCW (counterclockwise) pulse, DIR (r...
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