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Optimal control of a full scale duck

Experimental values have been obtained for optimal (complex conjugate) control of an Edinburgh duck model in the presence of unidirectional monochromatic incident waves, in a 1-dimensional test tank of intermediate depth. These results are used to predict values at full scale in the presence of unidirectional Pierson-Moscowitz wave spectra in 100 m water depth. Four full scale configurations were considered. Force, velocity, acceleration and displacement for complex conjugate control in each configuration were calculated. Also, 2 suboptimal control strategies outlined, as were the coefficients required to achieve them. Estimates of efficiency were made for the implementation of these strategies in each of the 4 cases.

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Paul NEBEL
Record Number: 11013 / Last updated on: 1995-01-09
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Collaboration sought: Information exchange/Training
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