Method and apparatus for controlling a stepping motor, and a rec

Details Method and apparatus for controlling a stepping motor, and a rec Method and apparatus for controlling a stepping motor, and a rec

1997-04-22

1999-08-17

Martin, David

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

454 75, G05B 1940

Patent

active

059398531

ABSTRACT:
In the process steps a tentative value (m) of a deviation in a turning angle of a rotor of the stepping motor is determined each time the stepping motor runs. A cumulative amount of the tentative values (m) forms an estimated value (S) of the deviation in the turning angle of the rotor of the stepping motor. This estimated value (S) of the stepping motor. This estimated value (S) of the deviation is stored in a predetermined memory area. When an ignition switch is turned on, it is judged whether or not the estimated value (S) of the deviation thus stored until the ignition switch is turned on, exceeds a predetermined value. When it is judged that such estimated value (S) exceeds the predetermined value, an initial setting of the stepping motor is made.

REFERENCES:
patent: 4759269 (1988-07-01), Brown et al.
patent: 5194043 (1993-03-01), Takahashi et al.
patent: 5699857 (1997-12-01), Flaishans et al.
patent: 5767651 (1998-06-01), Boillet et al.
patent: 5873780 (1999-02-01), Mori et al.

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