Lets consider OC3-Hywind (In FAST) as a black box with 2 inputs(blade pitch angle and constant gen torque) and several outputs(Blade and tower motions, …).
I want to identify this black box through numerical methods. To do this identification process well, I need to alter the blade pitch angle regularly or maybe irregularly and record the outputs. In this way I will be able to model the black box through its inputs and outputs.
Are there any opinions about how to do this process well?
Suppose we have no disturbances in system(constant wind and still water). In this way the blade pitch alteration must be good as possible to incite the all modes of motion of OC3.
How can I acquire the best Inputs alteration (fluctuations) to incite the all modes of motion of OC3?
Any other comments will be so helpful.