| 连续变速颤振试验信号处理的递推时频分析方法 |
| |
| 引用本文： | 宋叔飚,裴承鸣.连续变速颤振试验信号处理的递推时频分析方法[J].中国航空学报,2005,18(3):213-217. |
| |
| 作者姓名： | 宋叔飚 裴承鸣 |
| |
| 作者单位： | [1]Data Processing Center, Northwestern Polytechnical University, Xi＇an 710072, China |
| |
| 基金项目： | Foundation item： Aeronautical Science Foundation of China（01A53001） |
| |
| 摘 要： | 针对连续变速颤振试验信号的非平稳特点及在线分析需求，提出了一种递推时频分析方法。该方法利用自适应算法跟踪一个时变系统，从而获得具有时变系数的参数化数学模型，进而可得到信号的时变参数谱。数值仿真结果证明了该方法的可行性与优越性，低速风洞气弹模型的连续变速颤振试验验证了该方法的工程应用前景。
|
| 关 键 词： | 连续变速颤振试验 非平稳信号处理 递推时频分析 |
| 文章编号： | 1000-9361（2005）03-0213-05 |
| 收稿时间： | 2004-11-24 |
| 修稿时间： | 2005-02-01 |
A Recursive Method of Time-Frequency Analysis for the Signal Processing of Flutter Test with Progression Variable Speed |
| |
| SONG Shu-biao,PEI Cheng-ming.A Recursive Method of Time-Frequency Analysis for the Signal Processing of Flutter Test with Progression Variable Speed[J].Chinese Journal of Aeronautics,2005,18(3):213-217. |
| |
| Authors: | SONG Shu-biao PEI Cheng-ming |
| |
| Abstract: | Focused on the non-stationarity and real-time analysis of signal in flutter test with progression variable speed (FTPVS), a new method of recursive time-frequency analysis is presented. The time-varying system is tracked on-line by building a time-varying parameter model, and then the relevant parameter spectrum can be obtained. The feasibility and advantages of the method are examined by digital simulation. The results of FTPVS at low-speed wind-tunnel promise the engineering application perspective of the method. |
| |
| Keywords: | flutter test with progression variable speed (FTPVS) non-stationary signal processing recursive time-frequency analysis (RTFA) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
