Virtual sensing apparatus of structural vibration and operating method thereof
AssigneeUniversity-Industry Cooperation Group of Kyung Hee University
InventorsJin Gyun KIM, Seung In OH, Hyun Woo BIEK, Seung Hoon KIM, Da Eun PARK
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Abstract
The present disclosure relates to a technical virtual sensing idea of indirectly measuring structural vibration information on an unmeasured point while minimizing the number of sensors attached for actual measurement, and more particularly, to a technique of estimating measurement data of an unmeasured point using a finite element model, synchronized and updated based on experimental data of an actual measurement subject structure, and a virtual sensing algorithm.
Claims17
A virtual sensing apparatus of structural vibration, comprising:
- an experimental data acquisitor configured to perform a modal experiment on a measurement subject structure to acquire modal data;
- a finite element model updater configured to update a finite element model for simulating structural vibration characteristics of the measurement subject structure using the acquired modal data and a reduced modeling technique;
- an actual measurement data measurer configured to measure actual displacement measurement data from a first point of the measurement subject structure;
- and
- a virtual sensing information creator configured to estimate virtual displacement data at a second point of the measurement subject structure using the updated finite element model, the measured actual displacement measurement data and a time integration algorithm and create virtual sensor information of the second point based on the estimated virtual displacement data.
An operation method of a virtual sensing apparatus of structural vibration, the operation method comprising:
- performing, by an experimental data acquisitor, a modal experiment on a measurement subject structure to acquire modal data;
- updating, by a finite element model updater, a finite element model for simulating structural vibration characteristics of the measurement subject structure using the acquired modal data and a reduced modeling technique;
- measuring, by an actual measurement data measurer, actual displacement measurement data from a first point of the measurement subject structure;
- and
- estimating, by a virtual sensing information creator, virtual displacement data at a second point of the measurement subject structure using the updated finite element model, the measured actual displacement measurement data and a time integration algorithm and creating virtual sensor information of the second point based on the estimated virtual displacement data.
Dependencies are inferred from the claim text.