Browse Prior Art Database

Positional Control System Using Stepping Motor

IP.com Disclosure Number: IPCOM000092838D
Original Publication Date: 1967-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Fredriksen, TR: AUTHOR

Abstract

In control systems, the accuracies available through use of a digital processor are often not fully realized due to the utilization of analog techniques in the positioning mechanism. There is shown a positioning mechanism which is directly controlled by a digital processor and which does not utilize analog-to-digital or digital-to-analog conversion.

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Positional Control System Using Stepping Motor

In control systems, the accuracies available through use of a digital processor are often not fully realized due to the utilization of analog techniques in the positioning mechanism. There is shown a positioning mechanism which is directly controlled by a digital processor and which does not utilize analog-to- digital or digital-to-analog conversion.

The number of steps to be moved is loaded into the logic device. This enables the power driver to cause the stepping motor to start to step when the count in the logic device is unequal to the count in the binary counter. Since the counter is initially reset to zero, the stepping motor begins to step when the count is loaded into the logic device. A digital transducer which can comprise a disk- light, source-photocell combination generates a pulse for each step. These pulses are applied to the counter. When the counts in the counter and logic device are equal, the power driver is disabled and the stepping motor ceases to step.

A bidirectional system can be realized by use of two counters, one for clockwise and one for counterclockwise movement or by use of a reversible binary counter.

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