Accession Number : AD0710261

Title :   FACILITIES FOR ANALOG AND ANALOG-DIGITAL COMPUTER TECHNOLOGY (SELECTED ARTICLES),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Schwartz,E. E. ; Kalyaev,A. V.

Report Date : 27 MAY 1970

Pagination or Media Count : 36

Abstract : Digital differential analyzers that use single-digit increments have been relatively slow machines unable, in many cases, to operate on the real-time basis. Potentialities of digital integrating computers (DIC) that use high-order Stieltjes integrating formulas are considered. Principles of synthesizing DIC's with multi-digit increments (realization of Shannon's equations) are examined, as are the extrapolation and interpolation (or iteration) processes used in integration. An analysis of quantization shows that a much higher accuracy of results are obtainable if the variables proper, rather than their increments, are quantized. A difference-quantized pattern, which simulates the Shannon equations, can serve as the basis for synthesizing DIC's with a floating point; to this end, all variables have to be normalized. Such DIC's would have a speed of operation exceeding that of differential analyzers by 2-3 orders, at only a moderate increase in equipment. This fact opens good prospects for using DIC's in simulating complex dynamic systems on the real-time basis; DIC's also seem suitable for navigation systems and control of fast industrial processes. (Author)

Descriptors :   (*DIGITAL DIFFERENTIAL ANALYZERS, DESIGN), ANALOG-DIGITAL COMPUTERS, MEASUREMENT, VOLTMETERS, ERRORS, INPUT OUTPUT DEVICES, INTERPOLATION, USSR

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE