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Offline synchronization of data acquisition systems using system identification
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DOI：10.1016/j.jsv.2016.06.015.png)
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Abstract
En 中文
This paper presents a technique for offline time synchronization of data acquisition systems. The technique can be applied when real-time synchronization of data acquisition systems is impossible or not sufficiently accurate. It allows for accurate synchronization based on the acquired dynamic response of the structure only, without requiring a common response or the use of a trigger signal. The synchronization is performed using the results obtained from system identification, and assumes linear dynamic behavior of the structure and proportional damping of the structural modes. A demonstration for a laboratory experiment on a cantilever steel beam shows that the proposed methodology can be used for accurate time synchronization, resulting in a significant improvement of the accuracy of the identified mode shapes. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords:
Time synchronization
Data acquisition
System identification
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