Method and device for controlling a stepping motor

Details Method and device for controlling a stepping motor Method and device for controlling a stepping motor

1999-08-20

2000-02-15

Ro, Bentsu

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

368 85, G04C 314, H02P 802, H02P 834

Patent

active

060256907

ABSTRACT:
The method includes applying to the coil (3) of the motor (2) driving pulses having alternately a first and a second polarity, supplying the coil (3) with a determined quantity of electric energy during each driving pulse, detecting, after each driving pulse, the rotation or non rotation of the rotor of the motor (2) in response to said driving pulse, and adjusting said determined quantity of electric energy as a function of said detection.
In order to further reduce the quantity of electric energy consumed by the motor, the method is characterised in that the adjustment of the quantity of electric energy supplied to the coil (3) is effected separately for the driving pulses having the first polarity and for the driving pulses having the second polarity.

REFERENCES:
patent: 4212156 (1980-07-01), Kawamura et al.
patent: 4467255 (1984-08-01), Xuan
patent: 4518906 (1985-05-01), Ueda
patent: 5247235 (1993-09-01), Tu et al.

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