On the reduction of error in certain analog computer calculations by the use of constraint equations

Authors:
Robert M. Turner
Affiliations:
Lockheed Aircraft Corporation, Sunnyvale, California
Venue:
IRE-AIEE-ACM '60 (Western) Papers presented at the May 3-5, 1960, western joint IRE-AIEE-ACM computer conference
Year:
1960

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Abstract

This paper describes a method of reducing the error in certain analog computer calculations by the negative gradient technique where one has additional information about system performance in the form of constraint equations. In general, the technique leads to correction terms which are introduced into the system differential equations. In some cases, however, simulation is obtained by operating directly with the constraint relations themselves.