The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2019
Filed:
Dec. 04, 2017
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Rush D. Robinett, Iii, Tijeras, NM (US);
Ossama Abdelkhalik, Houghton, MI (US);
Jiajun Song, Houghton, MI (US);
David G. Wilson, Tijeras, NM (US);
Rush D. Robinett, III, Tijeras, NM (US);
Ossama Abdelkhalik, Houghton, MI (US);
Jiajun Song, Houghton, MI (US);
Giorgio Bacelli, Albuquerque, NM (US);
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US);
Michigan Technological University, Houghton, MI (US);
Abstract
A multi-resonant wide band controller decomposes the wave energy converter control problem into sub-problems; an independent single-frequency controller is used for each sub-problem. Thus, each sub-problem controller can be optimized independently. The feedback control enables actual time-domain realization of multi-frequency complex conjugate control. The feedback strategy requires only measurements of the buoy position and velocity. No knowledge of excitation force, wave measurements, nor wave prediction is needed. As an example, the feedback signal processing can be carried out using Fast Fourier Transform with Hanning windows and optimization of amplitudes and phases. Given that the output signal is decomposed into individual frequencies, the implementation of the control is very simple, yet generates energy similar to the complex conjugate control.