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Motor control apparatus, image forming apparatus, and motor control method

  • US 9,787,223 B2
  • Filed: 07/08/2015
  • Issued: 10/10/2017
  • Est. Priority Date: 07/25/2014
  • Status: Active Grant
First Claim
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1. A motor control apparatus configured to control a drive and stop operation of a motor, comprising:

  • a counting unit configured to count-up or count-down a count value of a timer from an initial value with a lapse of time in response to receiving an operation start instruction;

    a signal output unit configured to compare an output compare value with the count value of the timer simultaneously with a start of the counting by the counting unit, output a first state signal until the count value reaches the output compare value, and output a second state signal simultaneously when the count value reaches the output compare value;

    a drive unit configured to output to the motor a first control signal to drive the motor in response to receiving the first state signal from the signal output unit, and output to the motor a second control signal to stop the motor in response to receiving the second state signal from the signal output unit; and

    a control unit configured toperform a drive time extension process to reset the count value to the initial value in response to a determination that the count value has reached a first threshold value that is smaller than the output compare value, and that a state of an output signal from a sensor is a first state, andterminate the drive time extension process in response to a determination that the count value has reached the first threshold value and that the state of the output signal from the sensor has changed from the first state to a second state.

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