Accession Number : AD0642932

Title :   AN ANALYSIS OF DISTRIBUTED LAG IN FEEDBACK CONTROL SYSTEMS WITH GENERAL IMPEDANCE TERMINATION.

Descriptive Note : Doctoral thesis,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION

Personal Author(s) : Ivy,Edward Weber

Report Date : AUG 1965

Pagination or Media Count : 116

Abstract : Analytical methods of analysis for linear feedback control systems are extended to include distributed lag in its most generalized form (terminating impedance having both resistive and reactive components). Methods are developed for examining analytically the effect of the distributed lag element with general impedance termination on the performance of a linear feedback control system in regard to frequency response, root locus, and time response to a specified input. In the analytical development a generalized approach is used resulting in mathematics and corresponding computer programs that are readily usable for a wide variety of distributed lag systems containing any type and combination of input, cascaded element, and termination impedance. The only restriction of the methods developed is that each element or variable within the system is linear and can be described by a Laplace transform. Using the analytical methods developed, typical first and second order distributed lag systems are analyzed for various combinations and values of system parameters. The calculated values of the first order distributed lag system obtained by use of the digital computer are compared with those measured in a laboratory simulation using a distributed lag model in conjunction with the analog computer. (Author)

Descriptors :   (*CONTROL SYSTEMS, FEEDBACK), (*TOPOLOGY, CONTROL SYSTEMS), AUTOMATION, LOCUS, LINEAR SYSTEMS, INTEGRAL TRANSFORMS, TRANSFORMATIONS(MATHEMATICS), COMPUTER PROGRAMMING, FUNCTIONS(MATHEMATICS)

Subject Categories : Theoretical Mathematics
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE