Displacement reconstruction method for lattice tower structure based on improved mode superposition
US12044601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Oct 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention belong to the technical field of lattice tower structure monitoring, and discloses a displacement reconstruction method for a lattice tower structure based on improved mode superposition. The method comprises: uniformly arranging D strain sensors on main member of a lattice tower along the height, processing collected strain data {ε}D×1 using a stochastic subspace identification (SSI) method to obtain a matrix [Ψ]D×nT of first n-order strain modes; calculating a function relation y(x) between a distance from a measuring point to a neutral layer and a height according to a lattice tower design drawing; performing polynomial fitting on the first n-order strain modes with a height coordinate x of the lattice tower respectively to obtain a strain mode function Ψi(x), expanding a function according to a Taylor formula, performing double integration on the expansion result and substituting same into a boundary condition, to obtain a displacement mode function Φi(x); evaluating a modal coordinate {q}n×1 by means of the least square method, substituting the height coordinate x of a displacement object point to be reconstructed, and multiplying the displacement mode fu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.