Stepping motor driving device

Details Stepping motor driving device Stepping motor driving device

1997-07-11

1998-06-23

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318439, H02P 700

Patent

active

057709378

ABSTRACT:
A stepping motor driving device which is capable of correcting a micro step moving angle during micro step driving. This stepping motor driving device includes a motor control portion for giving instruction as to a moving amount, a CPU for outputting the number of motor drive pulses according to a moving amount instructed by the motor control portion, a motor drive circuit for driving a motor according to the motor drive pulses and a memory for storing a pulse number showing an actual moving angle closest to an ideal moving angle as a correction pulse number corresponding to a micro step angle based on an error between an actual moving angle and the ideal moving amount with respect to each micro step angle within a full step angle. The CPU outputs pulses in the correction pulse number stored in the memory correspondingly to the micro step angle to the motor drive circuit in order to perform micro step driving by the micro step angle.

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