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RESEARCH PAPERS

An Algorithm for Automatic Reduction of Complex Signal Flow Graphs

[+] Author and Article Information
K. R. Young

Reconition Equipment, Inc., Dallas, Tex.

L. L. Hoberock

Mechanical Engineering Department, University of Texas, Austin, Tex.

J. G. Thompson

Mechanical Engineering Department, Kansas State University, Manhattan, Kan.

J. Dyn. Sys., Meas., Control 98(4), 367-374 (Dec 01, 1976) (8 pages) doi:10.1115/1.3427053 History: Received August 05, 1976; Online July 13, 2010

Abstract

A computer algorithm is developed that provides efficient means to compute transmittances directly from a signal flow graph or a block diagram. Signal flow graphs are cast as directed graphs described by adjacency matrices. Nonsearch computation, designed for compilers without symbolic capability, is used to identify all arcs that are members of simple cycles for use with Mason’s gain formula. The routine does not require the visual acumen of an interpreter to reduce the topology of the graph, and it is particularly useful for analyzing control systems described for computer analyses by means of interactive graphics.

Copyright © 1976 by ASME
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