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Controller of stepping motor, control method of stepping motor, and stepping motor drive controlling system
Controller of stepping motor, control method of stepping motor, and stepping motor drive controlling system
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机译:步进电机控制器,步进电机控制方法和步进电机驱动控制系统
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摘要
According to one embodiment, a controller of a stepping motor includes a table generating unit and a current controlling unit. The table generating unit generates a data table of a threshold by using values of induced voltage at frequencies of switching signal that changes a set value of a drive current, the threshold being proportional to a frequency of the switching signal within an operation region in which the frequency of the switching signal is lower than a predetermined frequency, the values of the induced voltage including a first induced voltage generated at a first frequency of the switching signal and a second induced voltage generated at a second frequency of the switching signal. The current controlling unit controls a value of the drive current in accordance with a comparison result between the threshold and an induced voltage that is detected at a frequency lower than the predetermined frequency.
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