Abstract
As wind turbine blades fatigue, the blade’s dynamic response to loading may be expected to change. The kinematic quantities that exhibit significant changes are important for wind turbine blade operation from the perspective of measurement, estimation, and performance or even life cycle prediction. A state estimate providing accurate information on these features would lead to better estimates of remaining fatigue life and provide valuable information to the turbine control systems for the purpose of maximizing total energy output of a wind turbine system. In this work, we implement an observer for state estimation of nonlinear systems using the system Jacobian to correct the system output by updating the force input to a reference model in an iterative Newton-Raphson scheme. We apply this method to a surrogate wind turbine blade modeled using a geometrically exact beam theory to estimate its state given available measurements. LA-UR-12-25441.
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© 2014 The Society for Experimental Mechanics
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Taylor, S.G., Luscher, D.J., Todd, M.D. (2014). State Estimate of Wind Turbine Blades Using Geometrically Exact Beam Theory. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Topics in Modal Analysis, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6585-0_41
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DOI: https://doi.org/10.1007/978-1-4614-6585-0_41
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