Dual stepping angle stepper motor drive

Details Dual stepping angle stepper motor drive Dual stepping angle stepper motor drive

1977-06-30

1979-03-20

Rubinson, Gene Z.

Electricity: motive power systems

Open-loop stepping motor control systems

H02K 3700

Patent

active

041456440

ABSTRACT:
A stepping motor control circuit permitting selective operation of the motor in various modes such as half or full step mode. The circuit includes a pulse generator producing pulses at a selected motor step rate. A switch means selects the step size while a second switch selects the motor direction. An up/down counter counts pulses from the pulse generator in a direction correlated with the selected rotation direction. A read-only-memory is addressed as a function of the periodically repeating count in the up/down counter and the selected step size. The stored information at the addressed read-only-memory location actuates motor drive circuitry which generates energizing signals for the motor windings to drive the motor in the selected direction a distance corresponding to the selected step size at a step rate equal to the pulse rate of the pulse generator.

REFERENCES:
patent: 3746958 (1973-07-01), Leenhouts
patent: 3809990 (1974-05-01), Kuo et al.
patent: 3838258 (1974-09-01), Logan
patent: 3963971 (1976-06-01), None

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