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Browse Prior Art Database

Digital Analog Interface Structure

IP.com Disclosure Number: IPCOM000095839D
Original Publication Date: 1964-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Clapper, GL: AUTHOR

Abstract

The adaptive digital-to-analog interface structure utilizes banks of adaptive memory units. Digital computer 3 controls one or more adaptive memory banks, such as AMA and AMB. Each bank is composed of one or more adaptive memory units which are conditioned to one side or the other of a neutral or null condition depending upon the supply to them of conditioning and input signals.

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Digital Analog Interface Structure

The adaptive digital-to-analog interface structure utilizes banks of adaptive memory units. Digital computer 3 controls one or more adaptive memory banks, such as AMA and AMB. Each bank is composed of one or more adaptive memory units which are conditioned to one side or the other of a neutral or null condition depending upon the supply to them of conditioning and input signals.

Activating input signals from computer 3 to the memory banks are programmed for different phases of a process cycle for example, and corrections and adjustments are made by applying conditioning pulses from computer 3 to the adaptive memory units. The summation signals on output lines 5 and 7 of AMA are analog voltages which can either be used directly or, as shown, can be utilized indirectly to control a closed loop servo-system. In the arrangement shown, the summed weight voltages are applied to a balance detector. This provides a reverse or forward motor control signal depending on whether or not the voltages on one output line are greater or less than those on the other.

Motor control 9 supplies suitable operating energy to motor 11 to operate a mechanism, such as a valve or other device, the position of which is sensed by position sensing potentiometer 13. This is attached to the control shaft driven by motor 11 and is electrically coupled to the weight summation lines 5 and 7 in such manner that, when the desired position of the shaft driven by mot...