In this paper, the chaos method for reducing line spectra of the radiated noise of marine vessels is implemented with the application of a control scheme, that is, chaotifing the nonlinear vibration isolation system (VIS) with an external chaotic system, such as the Lorenz system families. The scheme is similar to generalized synchronization of chaos to a considerable degree. Moreover, an implicit performance-index function and optimization strategy are proposed to obtain the optimal control gain for generating chaos with the highest quality. Numerical simulations are carried out and the results confirm the validity and effectiveness of the methods.
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