Technical gazette, Vol. 22 No. 2, 2015.
Original scientific paper
https://doi.org/10.17559/TV-20141208054604
Robust global sliding model control for water-hull-propulsion unit interaction systems - Part 2: Model validation
Zhixiong Li
; (1) Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining & Technology, Xuzhou 221116, China; (2) State Key Laboratory of Tribology, Tsinghua University, Beijing 100000, China; (3) School of Mechanical & Manufactur
Xinping Yan
; School of Energy & Power Engineering, Wuhan University of Technology, Wuhan 430063, China
Li Qin
; School of Machinery & Automation, Wuhan University of Science and Technology, Wuhan 430081, China
Kai Cheng
; School of Energy & Power Engineering, Wuhan University of Technology, Wuhan 430063, China
J. T. Xing
; WUT-UOS High Performance Ship Technology Joint Centre, Wuhan 430063, China
Abstract
Unexpected severe hull deformation caused by wave loads poses alignment problem to the propulsion shaft line in large scale ships, which would significantly influence the dynamical performance of the marine propulsion system. How to suppress negative disturbance imposed by the interaction between water-hull-propulsion and ensure the normal operation of the marine propulsion system is a challenging task. To address this issue, a new global sliding model control (GSMC) for marine water-hull-propulsion unit systems is proposed and investigated to obtain more accurate control performance in a series of researches. In Part 1 the GSMC controller has been developed and the bounded nonlinear model uncertainties have been derived based on the experiments and sea trial. In this work the upper boundary of 1,85 % was introduced into the GSMC controller to derive the total control law realising the robust control of the marine propulsion system. Numerical simulations based on the real bulk carrier parameters show a high effectiveness of the GSMC for speed tracking, compared with the traditional sliding model controller and Proportional Integral Derivative (PID) controller. By the proposed and investigated control system in this paper may be developed a simple practical-effective robust control strategy for marine propulsion systems subject to some complex unknown uncertainties through further investigations, validations and modifications.
Keywords
global sliding model control; marine propulsion system; nonlinear control model; uncertainties in marine propulsion system; water-hull-prolusion unit interactions
Hrčak ID:
138110
URI
Publication date:
22.4.2015.
Visits: 2.230 *