Motor control system and motor control method

Abstract

To reduce variations in the motor's stopping position. [Solution] The motor control system 100 comprises an acquisition unit 101, a setting unit 102, and a control unit 103. The acquisition unit 101 acquires pulse signals that instruct the motor 92 to accelerate or decelerate. The setting unit 102 sets a stopping frequency for the motor 92 corresponding to the stopping timing of the pulse signals, based on the frequency of the pulse signals during acceleration of the motor 92. When the frequency of the pulse signals during deceleration of the motor 92 reaches the stopping frequency, the control unit 103 executes a stopping process to stop the motor 92 by short-circuiting the brakes.

Claims

1. An acquisition unit that acquires pulse signals to instruct the motor to accelerate or decelerate, A setting unit sets a motor stop frequency corresponding to the stopping timing of the pulse signal, based on the frequency of the pulse signal during acceleration operation of the motor. The system includes a control unit that performs a stop process to stop the motor by short-circuiting the brake when the frequency of the pulse signal during deceleration operation of the motor reaches the stopping frequency. Motor control system.

2. The setting unit sets the stop frequency by calculating the stop frequency based on the frequency of the initial pulse that instructs the motor to start in the pulse signal. The motor control system according to claim 1.

3. The stopping frequency is greater than the frequency of the initial pulse. The motor control system according to claim 2.

4. The motor drives rollers for transporting sheets in an image forming apparatus. A motor control system according to any one of claims 1 to 3.

5. The setting unit sets the stop frequency when the image forming apparatus is performing image forming processing, and does not set the stop frequency when the image forming processing is not being performed. The control unit executes the stop process when the stop frequency is set, and stops the motor after waiting for the falling edge of the pulse signal if the stop frequency is not set. The motor control system according to claim 4.

6. The setting unit, if the current acceleration / deceleration operation of the motor is the same as the previous acceleration / deceleration operation of the motor, does not set the stopping frequency. If the setting unit does not set the stop frequency, the control unit executes the stop process using the previous stop frequency. A motor control system according to any one of claims 1 to 3.

7. An acquisition step to acquire a pulse signal that instructs the motor to accelerate or decelerate, A setting step of setting the motor's stopping frequency corresponding to the stopping timing of the pulse signal based on the frequency of the pulse signal during acceleration operation of the motor, The control step includes, when the frequency of the pulse signal during deceleration operation of the motor reaches the stopping frequency, executing a stop process to stop the motor by short-circuiting the brake, Motor control method.

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