Laser scanner using two scan motors independently controlled by

Details Laser scanner using two scan motors independently controlled by Laser scanner using two scan motors independently controlled by

1991-01-11

1993-11-30

Willis, Davis L.

Registers

Coded record sensors

Particular sensor structure

318 68, 318 77, G06K 710, H02P 546

Patent

active

052667871

ABSTRACT:
A dual motor speed control circuit for providing independent speed control of two motors in a laser scanning device is disclosed herein. This apparatus utilizes a single input signal having variable frequency and duty cycle components. The speed of the first motor is controlled by utilizing the frequency component of said input signal while the speed of the second motor is controlled by utilizing the frequency and duty cycle components of said input signal. Specifically, a DC signal is generated that is dependent upon the duty cycle component of said input signal and said DC signal is utilized to offset the speed of the second motor from the speed value as determined by the frequency component of said input signal.

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