Paper Info
Title
Adaptive compensation strategy for the tracking/rejection of signals with time-varying frequency in digital repetitive control systems
Abstract
Digital repetitive control is a technique which allows to track periodic references and/or reject periodic disturbances. Repetitive controllers are usually designed assuming a fixed frequency for the signals to be tracked/rejected, its main drawback being a dramatic performance decay when this frequency varies. A common approach to overcome this problem consists of an adaptive change of the sampling time according to reference/disturbance period variations. However, the sampling period adaptation implies structural changes that may degrade the closed-loop time response. This article presents a design strategy which allows to compensate for the effect of non-uniform sampling and forces the closed-loop behavior to coincide with that of the system operating under an a priori selected nominal sampling period. The stability of the overall closed-loop system is also analyzed. Experimental results obtained from a mechatronic plant model validate the proposal.
Year
DOI
Venue
2009
10.1016/j.jprocont.2010.02.002
Journal of Process Control
Keywords
DocType
Volume
Repetitive control,Time-varying sampling,Stability
Conference
20
Issue
ISSN
Citations 
4
0959-1524
2
PageRank 
References 
Authors
0.42
11
3
Name
Order
Citations
PageRank
Josep M. Olm12210.11
Germán A. Ramos293.91
Ramon Costa-Castelló35117.21