US 12,123,797 B2
Method and a system for estimating the tension of a tension member
Marie Brøns, Kongens Lyngby (DK); and Jon Juel Thomsen, Kongens Lyngby (DK)
Assigned to Danmarks Tekniske Universitet, Kongens Lyngby (DK)
Appl. No. 17/795,090
Filed by Danmarks Tekniske Universitet, Kongens Lyngby (DK)
PCT Filed Jan. 27, 2021, PCT No. PCT/DK2021/050027
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/151444, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20154878 (EP), filed on Jan. 31, 2020.
Prior Publication US 2023/0048801 A1, Feb. 16, 2023
Int. Cl. G01L 5/04 (2006.01); G01L 1/10 (2006.01); G01M 7/02 (2006.01)
CPC G01L 5/042 (2013.01) [G01L 1/10 (2013.01); G01M 7/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for estimating the tension of a tension member, said method comprising the steps of:
exciting said tension member such as to induce vibration of said tension member,
sampling said vibration to obtain a first vibration signal (VS1),
modifying the mass and/or the rotational inertia of said tension member such as to provide a modified tension member,
exciting said modified tension member such as to induce vibration of said modified tension member,
sampling said vibration of said modified tension member to obtain a second vibration signal (VS2), and
estimating the tension of said tension member based on a comparison of said first vibration signal (VS1) and said second vibration signal (VS2).