Title :
Synthesis of dynamic corrector to improve accuracy of course stabilization
Author :
Wang, Hongbo ; Cao, Baohua ; Cai, Haoyu ; Lei, Yulong
Author_Institution :
State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China
Abstract :
A novel scheme to improve the dynamic characteristics of ship motion control system is proposed after investigating several advanced control algorithms. Problem of selecting the corrector loop in multi-object structure is studied, which achieved the accuracy requirements of vessel course control on disturbed sea. An integrated control law with a synthesized structure Asymptotic Observer + Corrector + Speed control law(ACSC) is deduced. Basic characteristics of ACSC law are described, then the way to obtain the transmission matrix F(s) of dynamic corrector is presented. Controller´s transmission function WO(p), insuring stability of closed loop system, is found as a solution of mean square norm optimization problem. Finally, the performance of control system is studied, especially the course accuracy and amplitude-frequency characteristics with/without control are compared for disturbed sea conditions.
Keywords :
closed loop systems; motion control; observers; optimisation; ships; stability; amplitude-frequency characteristics; asymptotic observer; closed loop system; corrector; course stabilization; disturbed sea; dynamic corrector synthesis; integrated control law; mean square norm optimization problem; ship motion control system; speed control law; vessel course control; Accuracy; Heuristic algorithms; Marine vehicles; Motion control; Observers; Vehicle dynamics; Velocity control; Amplitude-frequency characteristics; Corrector; Course stabilization; Precise control;
Conference_Titel :
Electric Information and Control Engineering (ICEICE), 2011 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-8036-4
DOI :
10.1109/ICEICE.2011.5777567
