DocumentCode
799644
Title
Transfer functions of a DDA program
Author
Leake, R.J. ; Althaus, H.L.
Author_Institution
University of Notre Dame, IN, USA
Volume
14
Issue
1
fYear
1969
fDate
2/1/1969 12:00:00 AM
Firstpage
61
Lastpage
63
Abstract
The purpose of this paper is to establish a guide for the employment of a digital differential analyzer (DDA) as a control element. An analysis of the performance limitations imposed by a fixed point scaling procedure is presented in terms of bandwidth and a canonical realization for transfer functions. Roughly, the results are that for a DDA of 
iterations/s and for a resolution of one part in q-1: 1) the bandwidth is 
rad/s 2) the poles of 
must lie in a circle of radius about 
3) the significant poles of 
must lie in a circle of radius 
about 
.
iterations/s and for a resolution of one part in q-1: 1) the bandwidth is rad/s 2) the poles of must lie in a circle of radius about 3) the significant poles of must lie in a circle of radius about .Keywords
Digital differential analyzers; Transfer functions; Analytical models; Application software; Bandwidth; Computational modeling; Computer errors; Computer simulation; Employment; Equations; Servomechanisms; Transfer functions;
fLanguage
English
Journal_Title
Automatic Control, IEEE Transactions on
Publisher
ieee
ISSN
0018-9286
Type
jour
DOI
10.1109/TAC.1969.1099114
Filename
1099114
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