Design of digital control system using the sampling period as a compensator

Author

Dormido, S. ; Lopez-Rodriguez, I. ; Fdez-Marrón, J.L. ; Morilla, F. ; Aranda, J.

Author_Institution

Dpto. de Inf. y Autom., Univ. Nacional De Educacion A Distancia, Madrid, Spain

fYear

1991

Firstpage

812

Abstract

Ideas are presented for using the sampling period as an additional parameter to permit the control of a digital control system. In this class of systems the sampling period becomes an important parameter to guarantee the stability and to modify widely the specification in a design problem. A modified root locus approach has been used and the sensitivity of the poles in the closed loop system is examined. An example shows how to compensate for variation in the gain of an open loop transfer function with the sampling period used to maintain a constant damping ratio

Keywords

closed loop systems; compensation; control system synthesis; digital control; poles and zeros; root loci; sampled data systems; sensitivity analysis; transfer functions; closed loop system; compensator; constant damping ratio; control system synthesis; digital control system; gain; loop transfer function; modified root locus approach; poles; sampled data systems; sampling period; sensitivity; stability; Closed loop systems; Control systems; Damping; Digital control; Equations; Feedback control; Frequency measurement; Sampling methods; Stability; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean

Conference_Location

LJubljana

Print_ISBN

0-87942-655-1

Type

conf

DOI

10.1109/MELCON.1991.161965

Filename

161965