| 邹学利,李宏民.多点激励振动试验振前优化方法研究[J].装备环境工程,2017,14(11):52-58. ZOU Xue-li,LI Hong-min.Optimization Method before Starting Multi-point Excitation Vibration Test[J].Equipment Environmental Engineering,2017,14(11):52-58. |
| 多点激励振动试验振前优化方法研究 |
| Optimization Method before Starting Multi-point Excitation Vibration Test |
| 投稿时间：2017-07-07 修订日期：2017-11-15 |
| DOI：10.7643/ issn.1672-9242.2017.11.011 |
| 中文关键词: 多点激励 动态仿真 振前优化 时域随机化 |
| 英文关键词:multi-point excitation dynamic simulation optimization before vibration test time domain randomization |
| 基金项目:国家自然科学青年基金项目（51603217）；中国博士后基金面上项目（2016M592023）；宁波市自然科学基金（2016A610258） |
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| 中文摘要: |
| 目的 研究多点激励振动试验的振前优化方法。方法 提出一种基于传递函数的多点激励振动试验的动态仿真方法，通过振前仿真可以实现试验方案和试验参数的优化。通过预试验获取传递函数矩阵，然后以传递函数为仿真对象，以时域信号的卷积代替时域信号的驱动，最后模拟MIMO控制仪的控制过程形成一套完整的仿真试验方法。结果 通过仿真结果和试验结果的对比，仿真精度较高，完全能够说明实际的试验控制状态。结论 实际应用表明，通过振前仿真进行试验方案和控制参数的优化，有效减少了预试验的时间和次数，达到了较好的控制效果。 |
| 英文摘要: |
| 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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