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| Optimization Method before Starting Multi-point Excitation Vibration Test |
| Received:July 07, 2017 Revised:November 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.11.011 |
| KeyWord:multi-point excitation dynamic simulation optimization before vibration test time domain randomization |
| Author | Institution |
| ZOU Xue-li |
Aerospace Science & Industry Corp Defense Technology R&T Center, Beijing , China |
| LI Hong-min |
Aerospace Science & Industry Corp Defense Technology R&T Center, Beijing , China |
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| Abstract: |
| Objective To study optimization method of multi-support excitation vibration test before starting the test. Methods A dynamic simulation method based on transfer function for multi-point excitation vibration test was proposed to achieve optimization of test scheme and control parameters by simulation before starting the test. The transfer function matrix was obtained by pre-test; then the transfer function was used as the simulation object. And the time-domain signal convolution was used to replace the time-domain signal drive. Finally, a complete set of simulation test methods was formed by analyzing the control process of MIMO vibration controller. Results By comparing the simulation results with the experimental results, the simulation accuracy was high, which could fully explain the actual experimental control state. Conclusion The practical application shows that the optimization of test scheme and control parameters can effectively reduce the time and number of pre-test, and achieve better control results |
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