Sentence examples for modal identification techniques from inspiring English sources
Three independent but complementary output-only modal identification techniques are used for system identification.
Eight bending mode shapes were clearly identified in the range 0 17.96 Hz using the modal identification techniques for ambient vibration.
Existing instrumentation capabilities and modal identification techniques allow structures to be tested under free vibration, forced vibration (known input) or ambient vibration (unknown broadband loading).
To identify the dynamic properties of the building, three output-only modal identification techniques are applied to the ambient and forced vibration measurements.
Single-mode modal identification techniques can be easily implemented on small microcomputers and provide the user with good results if one uses simple, fast and accurate algorithms.
Following a brief review of the development of operational modal identification techniques, we describe a new method named frequency spatial domain decomposition (FSDD), with theoretical background, formulation and algorithm.
The proposed sensor placement strategy also minimizes the size of the test data matrix used by a popular modal identification technique called the eigensystem realization algorithm.
The natural modes of vibration, frequencies and damping were determined using (i) a conventional input output modal identification technique, based on the Rational Fraction Polynomial method, and (ii) a simple output-only method directly based on the Fast Fourier Transform (FFT) of the response (mode frequencies only).
Thus, the proposed method consists of extracting the phase of the oscillatory modes via a modal identification technique and applying a hierarchical agglomerative clustering technique together with the Elbow's method to gather the phases of each mode, enabling to provide coherent trajectories of generators.
Over the past years, many time-domain modal parameter identification techniques from output-only have been proposed.
In this paper, a modal parameter identification technique with multiple steady sinusoidal excitation is proposed.
