Method and device for controlling step motor

Details Method and device for controlling step motor Method and device for controlling step motor

1996-01-29

1998-03-03

Sircus, Brian

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

318696, 324160, 73 2, 364569, G01R 1136

Patent

active

057239649

ABSTRACT:
A CPU measures pulse width of a vehicle speed pulse signal transmitted from a vehicle speed sensor continuously and estimates the pulse width coming next according to the pulse width of the present pulse and preceding pulses. The CPU calculates a set position of a stepping motor from the data of the pulse width and the estimated pulse width, and calculates the number of steps for the stepping motor to move to the set position from the set position data and the present position data. Each driving time of the stepping motor is calculated from the estimated pulse width data and the number of steps.

REFERENCES:
patent: 4144573 (1979-03-01), Trussell et al.
patent: 4710818 (1987-12-01), Inatsuki
patent: 5017861 (1991-05-01), Hukuda
patent: 5138639 (1992-08-01), Nakamura
patent: 5315536 (1994-05-01), Murase et al.
patent: 5446655 (1995-08-01), Fukuda et al.

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