Picture of aircraft jet engine

Strathclyde research that powers aerospace engineering...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers involved in aerospace engineering and from the Advanced Space Concepts Laboratory - but also other internationally significant research from within the Department of Mechanical & Aerospace Engineering. Discover why Strathclyde is powering international aerospace research...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Multivariable PID tuning for dynamic ship positioning

Martin, P. and Katebi, M.R. (2005) Multivariable PID tuning for dynamic ship positioning. Proceedings- Institute of Marine Engineering Science and Technology Part a Journal of Marine Engineering and Technology, 7. pp. 11-24. ISSN 1476-1548

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

This paper introduces the ship dynamic positioning (DP) control problem, details a nonlinear multivariable simulation model for a floating production, storage and offloading (FPSO) vessel and proposes a new model-free linear method for rapid tuning of the DP multivariable PID controllers. Three existing model free tuning methods are compared for their performance and stability properties and a procedure is developed for rapid tuning of DP control systems. Controller structures are discussed and the methods are applied to the simulation model at an operating point, thereby justifying the use of linear tuning techniques. It is shown that some of the methods are appropriate and that it is straightforward to produce a controller of acceptable performance within the thruster input constraints of the ship. Simulation results are presented and analysed. The proposed methods are particularly useful for the cases where an adaptive DP control system is required to meet the desired performance.