Low Order Rational Approximations To The Delay Operator

1 February 1977

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industrial Electronics and Control Instrumentation

Vol. IECI-24 (1) , 61-65
https://doi.org/10.1109/TIECI.1977.351443

Abstract

Consideration is given to three rational approximants to the delay operator including the Pade approximants. The Pade approximants, in general, give rise to unstable system performance and, hence, are not satisfactory. The second approximant arises from a direct solution of systems with delay. The third is of the form (1 + sT)N. Low-order approximants of either of the later two types are generally satisfactory.

Keywords

POLES AND ZEROS
SYSTEM PERFORMANCE
STABILITY
DELAY SYSTEMS
SYSTEM ANALYSIS AND DESIGN
EQUATIONS
WRITING
INSTRUMENTS

This publication has 1 reference indexed in Scilit:

Feedback control systems with dead-time lag or distributed lag by root-locus method
Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1952