Repetitive control

Repetitive Control is a control method developed by a group of Japanese scholars in 1980s. It is based on the Internal Model Principle and used specifically in dealing with periodic signals, for example, tracking periodic reference or rejecting periodic disturbances. The repetitive control system has been proven to be a very effective and practical method dealing with periodic signals.{{cite web|title=An Overview on Repetitive Control --- what are the issues and where does it lead to?|url=http://wiener.kuamp.kyoto-u.ac.jp/~yy/Papers/RepetitiveControldocfin.pdf|work=Yutaka Yamamoto|accessdate=22 August 2011|url-status=dead|archiveurl=https://web.archive.org/web/20111006211955/http://wiener.kuamp.kyoto-u.ac.jp/~yy/Papers/RepetitiveControldocfin.pdf|archivedate=6 October 2011}}{{cite web|title=Iterative Learning Control, Delays and Repetitive Control|url=http://www.enm.bris.ac.uk/anm/workshop-a/programme/control-talks/owens.pdf|work=David Owens and Jari Hätönen*|accessdate=22 August 2011}} Repetitive control has some similarities with iterative learning control. The differences between these two methods can be found in [Wang, Gao, and Doyle. 2009].