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Image forming apparatus having stepping motor arranged in conveying path for paper, and method for controlling stepping motor in image forming apparatus
Image forming apparatus having stepping motor arranged in conveying path for paper, and method for controlling stepping motor in image forming apparatus
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机译:具有在纸张的输送路径中布置的步进马达的图像形成装置以及用于控制图像形成装置中的步进马达的方法
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摘要
An image forming apparatus includes: a stepping motor arranged in a conveying path for a paper; a driver for driving the stepping motor; a current detecting unit for detecting an actual current value; and a control unit for providing a set current value for every predetermined cycle. The control unit determines an estimated load torque value corresponding to the set current value in a previous cycle and the actual current value in a present cycle, by referring to a relationship between actual current and load torque of the stepping motor with respect to the set current value, determines a target load torque value based on the estimated load torque value, and determines, as the set current value, a current value corresponding to the target load torque value, by referring to a relationship between maximum output torque of the stepping motor and current supplied to the stepping motor.
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