Stepper motor controlling apparatus and pen recorder

Details Stepper motor controlling apparatus and pen recorder Stepper motor controlling apparatus and pen recorder

2005-12-14

2008-03-04

Masih, Karen (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S599000, C318S567000

Reexamination Certificate

active

07339342

ABSTRACT:
A stepper motor controlling apparatus has a driver which drives a stepper motor in response to an input pulse signal, a PWM controlling section which changes a duty ratio of the pulse signal fed to the driver to control a rotation of the stepper motor, a pulse encoder which rotates in response to the rotation of the stepper motor, and outputs a pulse according to a position of a moving object, a position counter which counts the pulse output from the pulse encoder to sense a present position of the moving object, and a pulse rate controlling section which controls an update latency time of the pulse signal according to a deviation between a target position of the moving object and the present position.

REFERENCES:
patent: 4910706 (1990-03-01), Hyatt
patent: 8-149892 (1996-06-01), None
patent: 10-150798 (1998-06-01), None

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