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| Control Circuit in the Vibration Test Based on Signal Flow Cycle |
| Received:October 17, 2015 Revised:April 15, 2016 |
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| DOI：10.7643/issn.1672-9242.2016.02.015 |
| KeyWord:vibration t test closed-loop feedback control signal flow transfer model open-loop fault |
| Author | Institution |
| XIA Jiang-ning |
1. Beijing Institute of Strength & Environment Engineering， Beijing ， China;2. Tongji University， Shanghai ， China |
| LU Zhi-guo |
Beijing Institute of Strength & Environment Engineering， Beijing ， China |
| SONG Han-wen |
Tongji University， Shanghai ， China |
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| Abstract: |
| Objective To analyze the mathematic model and transfer relationship of the signal flow cycle process in the vibration test. Methods According to the action of the signal in the transmission process, the test device was divided into five kinds of key equipment and the transfer models of the signal in various stages including signal conversion, detection and control were summarized and analyzed, and finally the influence of two kinds of open-loop fault using the controller as the circuit node was presented. Results According to the analysis of the signal flow cycle process, the signal transfer relationship in each stage during the closed-loop feedback control process, and the influence of the key device performance on the signal transmission of the vibration test was comprehensively analyzed, in order to help the engineer carry out the vibration test more conveniently. Conclusion The normal operation of the signal flow is the basis for smooth conduction of the vibration test, so it is necessary to deepen the knowledge on the relationship of the signal transmission and the influencing factors during the process of the vibration test. |
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