Enhanced Model Reference Adaptive Control Using Smith Predictor

TitleEnhanced Model Reference Adaptive Control Using Smith Predictor
Publication TypeJournal Article
Year of Publication2013
AuthorsKarthikeyan R, BhargaV C, Koneru K, Syam G, Tripathi S.
JournalApplied Mechanics and Materials
Volume367
Pagination363-368
ISBN Number3037857889
KeywordsDept. of Electronics and communication Engineering.
Abstract

The main aim of a control system is to repress the instabilities caused by nonlinearities of the system. Dead time is considered to be one of the most significant nonlinearities of a system. Dead time compensators play a vital role in reducing the dead time effects on the processes only to a minute extent. This paper proposes a method to overcome this problem by using Enhanced Model Reference Adaptive Control (MRAC) incorporating Smith Predictor. MRAC belongs to class of adaptive servo system in which desired performance is expressed with the help of a reference model. Enhanced MRAC consists of a fuzzy logic controller which provides adaptation gain to MRAC without human interference. A dead time compensator incorporated in the enhanced MRAC solves the problem of instabilities caused by dead time to a greater extent.