Accession Number : AD0674133

Title :   THE SIMULATION OF VARIABLE DELAY,

Corporate Author : INTERNATIONAL BUSINESS MACHINES CORP WINNIPEG (MANITOBA) SYSTEMS ENGINEERING

Personal Author(s) : Seddon,J. P. ; Johnson,R. A.

Report Date : 12 JUN 1967

Pagination or Media Count : 7

Abstract : A dual classification of variable delays (1) by their explicit dependence on time or through a state variable and (2) through their origins as 'pipe' or 'nonpipe' problems is presented. Techniques of simulation through standard analog components and, more particularly, transport devices are analyzed and further classification made of the latter to distinguish those suitable for state-variable delay systems from those that are not. The construction and testing of a simple variable delay are described. An application to a system in which the delay is a sinusoidal function of time is discussed in detail. A theory is presented that predicts what frequencies will be present in the output of such a device when excited by a sinusoid of commensurate frequency; experimental results corroborating this are presented. A scheme for converting a problem with variable delay to one with fixed delay is further analyzed and its range of application delimited. Conclusions include a discussion of the best type of simulator to be used for variable delay problems. (Author)

Descriptors :   (*DELAY CIRCUITS, SIMULATION), ANALOG SYSTEMS, HARMONIC ANALYSIS, PERIODIC VARIATIONS, BANDWIDTH, CONTROL SYSTEMS

Subject Categories : Electrical and Electronic Equipment
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE