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- W2896582684 abstract "The modal expansion method is a technique of visualizing the vibration field of the structure by estimating the MPF (modal participation factor) from the signals from a limited number of sensors. This paper will propose a method to obtain the reliable vibration field of the whole structure by using noise-contaminated signals. In this paper, the error of the predicted vibration field due to the noise signal is reduced by Kalman filter. The Kalman filter predicts more precise state variables from the noise-contaminated signal. With this characteristic of the Kalman Filter, a technique is introduced to predict the vibration field of the structure by using the acceleration vibration signals and the MPF of the structure, used as the state variables and the measured value, respectively. In this paper, the studied analytical model is a plate with 20 sensors evenly placed on the plate. The analytical model is excited by an aperiodic force, and MCS. Nastran was used for the vibration analysis. To confirm the accuracy of the predicted vibration field, the predicted vibration signals are compared with the exact vibration signals. The result shows that the proposed method of the vibration field visualization using Kalman Filter gives reliable results." @default.
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- W2896582684 date "2018-08-01" @default.
- W2896582684 modified "2023-09-25" @default.
- W2896582684 title "Vibration field estimation of a plate in time domain using Kalman filter" @default.
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- W2896582684 doi "https://doi.org/10.1088/1742-6596/1075/1/012079" @default.
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