On course-stability and control delay

Spyrou, KJ

dc.contributor.author	Spyrou, KJ	en
dc.date.accessioned	2014-03-01T01:48:41Z
dc.date.available	2014-03-01T01:48:41Z
dc.date.issued	1999	en
dc.identifier.issn	0020868X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25553
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0033280171&partnerID=40&md5=5ba29de31f6b8672fa1c51de81e9acdd	en
dc.subject.other	Approximation theory	en
dc.subject.other	Feedback control	en
dc.subject.other	Maneuverability	en
dc.subject.other	Mathematical models	en
dc.subject.other	Steering	en
dc.subject.other	Course-keeping capability	en
dc.subject.other	Ships	en
dc.title	On course-stability and control delay	en
heal.type	journalArticle	en
heal.publicationDate	1999	en
heal.abstract	For many engineering systems that either rely on some sort of feedback for their stability or feature retardation in their responses, the type and magnitude of delay is critical for their behaviour. In this paper, a comprehensive treatment of the effect of delayed control on course-keeping capability is presented. Independent time-lags in the heading angle and yaw rate feedbacks are considered, in discrete as well as in continuous form. Stability boundaries are derived, either numerically or through approximate analytical solutions. Exact analytical solutions are sometimes possible. Two cases of behaviour in large following waves where the linear approach cannot be applied are also considered. The first concerns a parametrically driven system in yaw. The second is about oscillatory surf-riding.	en
heal.publisher	Delft Univ Press, Delft, Netherlands	en
heal.journalName	International Shipbuilding Progress	en
dc.identifier.volume	46	en
dc.identifier.issue	448	en
dc.identifier.spage	421	en
dc.identifier.epage	443	en