|
| The Control Techniques in the Vibro-acoustic Test |
| Received:February 04, 2021 Revised:February 17, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.03.017 |
| KeyWord:vibration test acoustic test vibro-acoustic test |
| Author | Institution |
| LIU Qing-lin |
Institute of Systems Engineering, CAEP, Mianyang , China |
| WANG Dong-sheng |
Institute of Systems Engineering, CAEP, Mianyang , China |
| LI Ming-hai |
Institute of Systems Engineering, CAEP, Mianyang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| This paper is to solve some problems in the vibro-acoustic control, and improve the precision of the ground-based test of the re-entry flight environment. The control theory and load characteristics of the vibro-acoustic test are analyzed. The interactions of two loads of the vibro-acoustic test are studied through testing method. And the influence degree between the vibration and the acoustic is evaluated. The running noise of the shakers has little influence on the acoustic control result. The influence degree of the acoustic load on the vibration control result is related to the position of the control points. In the acoustic field, the noise floor of the vibration sensors will increase obviously, so the sensors should be installed inside the product as far as possible. In the vibro-acoustic test, the interactions of two loads of the vibration and acoustic may influence the test result. And the influence may be acceptable when the test is designed reasonably. |
| Close |
|
|
|