| 摘要 |
The motor drive apparatus includes a driven member, a stepping motor to drive the driven member, a driver to produce a drive signal for driving the stepping motor and whose signal value periodically changes, a memory to store data for setting a reference signal value as the signal value and a target movement amount of the driven member for each one-step drive of the stepping motor to be driven according to the drive signal having the reference signal value, and a detector to detect an actual movement amount of the driven member for each one-step drive of the stepping motor actually driven according to the drive signal having the reference signal value. The driver changes the signal value of the drive signal from the reference signal value to another signal value so as to reduce difference between the target movement amount and the actual movement amount.
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