| Autor: |
Sudip, Paul, TK, Datta |
| Zdroj: |
Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment (Sage Publications, Ltd.); Nov2013, Vol. 227 Issue 4, p367-380, 14p |
| Abstrakt: |
Semiactive control of a fixed offshore jacket platform using linear quadratic regulator (LQR) control algorithm is presented for deepwater conditions. The control devices are the semiactive hydraulic dampers (SHDs), installed in the bracings of the jacket structure. The optimum choice of the damping coefficient of the dampers is generated based on a law that considers variable values of the damping coefficients subjected to specified upper and lower bounds. The response quantities of interest, which are targeted for control, include acceleration and displacement of the deck, and the base shear. A four-legged steel jacket platform in a water depth of 183 m (600 ft) and under two sea states is considered as an example problem for finding out the controlled responses. The results of the parametric study indicate that significant reductions in the peak values of response quantities of interest can be achieved by semiactive control, using SHDs. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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