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Control Strategy for Horizontal Vibration of Towed Seismic Cables via Lyapunov Method
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LIU Tao,ZHANG Weijing，MA Jie
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(State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China)
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Abstract This paper presents the active vibration control of the towed seismic cable through a bird. A linear partial differential equation with variable coefficient describes towed seismic cable and an ordinary differential equation describes the dynamic of the bird. A control law is designed based on Lyapunov method, and the whole system’s energy is chosen as Lyapunov function. The control law includes the velocity and the slope. Finally, finite difference scheme is used to validate the efficiency of the control law.
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Received: 14 October 2009
Published: 31 October 2010
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