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Semi-Active Vibration Control for Offshore Platforms Based on LQG Method

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並列摘要


The objective of this paper is to mitigate the wave-induced vibration of offshore platform with magneto-rheological (MR) damper. The model of the platform coupled with MR damper is established where the external wave force is approximated with a white noise via a designed filter. Based on Linear Quadratic Gaussian (LQG) method, the optimal control force is determined when taking the measurement noise into account. Semi-active control algorithm is applied to generate the MR damping force by comparing with the optimal control force. Numerical example demonstrates that the semi-active control strategy based on LQG method can reduce the responses of the platform effectively.

參考文獻


Abdel Rohman, M., “Structural Control of a Steel Jacket Platform,” Structural Engineering and Engineering Mechanics, 4(2), pp.125-138 (1996).
Chen, K.T., Chou C.H., Chang, C.S.H., and Liu, Y.H., “Intelligent active vibration control in an isolation platform,” Applied Acoustics, Vol. 69, pp.1063-1084 (2008).
Fisco, N.R., Adeli, H., “Smart structures: Part I-Active and semi-active control,” Scientia Iranic, Vol. 18, Issue 3, pp. 275–284 (2011).
Golafshani, A.A., and Gholizad, A., “Friction damper for vibration control in offshore steel jacket platforms,” Journal of Constructional Steel Research, Vol.65, pp. 180-187 (2009).
Housner G..W., Bergman L.A., Gaughey. T.K, “Structural control: past, present, and future,” Journal of Engineering Mechanics, 123(9), pp.897-958 (1997).

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