Title :
Adaptive integral sliding mode controller for offshore steel jacket platform
Author :
Sola, Hamid Nouri ; Ahmadi, Behzad ; Ghaemi, Sehraneh
Author_Institution :
Fac. of Electr. & Comput. Eng., Univ. of Tabriz, Tabriz, Iran
Abstract :
This paper is concerned with active control for an offshore steel jacket platform subject to nonlinear wave-excited forces and parameter perturbation by using an adaptive control law and combining it with sliding mode control scheme. This novel control scheme is an adaptive integral sliding mode controller (AISMC). Then by considering vibration frequencies uncertainties and damping ratio uncertainties of offshore steel jacket platform, we have designed (RAISMC) control scheme. It is shown through simulation results, compared with some existing control schemes, this controller has a better performance in reducing oscillation amplitudes of the three floors of offshore platform with much less control force.
Keywords :
adaptive control; control system synthesis; damping; offshore installations; structural engineering; variable structure systems; vibration control; RAISMC control scheme design; active control; adaptive control law; adaptive integral sliding mode controller; control force; control schemes; damping ratio; nonlinear wave-excited forces; offshore steel jacket platform; oscillation amplitudes reduction; parameter perturbation; vibration frequencies; Damping; Force; Oscillators; Robustness; Steel; Uncertainty; Vibrations; active control; adaptive integral sliding mode control; offshore platform; uncertainty;
Conference_Titel :
Industrial Electronics (ISIE), 2014 IEEE 23rd International Symposium on
Conference_Location :
Istanbul
DOI :
10.1109/ISIE.2014.6864584
