| 水电机组非线性弱信号提取和预测 |
| |
| 引用本文： | 陈喜阳,张克危,刘洁,彭玉成.水电机组非线性弱信号提取和预测[J].水力发电,2005,31(7):58-60. |
| |
| 作者姓名： | 陈喜阳 张克危 刘洁 彭玉成 |
| |
| 作者单位： | 华中科技大学能源与动力学院,湖北,武汉,430074 |
| |
| 基金项目： | 国家攀登计划预选项目资助（PD9521907） |
| |
| 摘 要： | 通过谐波小波分解提取局部弱信号，并采用Newland快速算法求解谐波小波变换，减少了时间消耗，并锁定相位，获取了局部弱信号特征；介绍了计算最大lyapunov指数的流程和基于最大lyapunov指数的混沌时间序列预测方法，并将此预测方法引入到水电行业非线性信号趋势分析中。仿真实例验证了该方法在水电行业中具有一定的应用价值。
|
| 关 键 词： | 谐波小波 非线性 混沌 Lyapunov指数 预测 水轮发电机组 |
| 文章编号： | 0559-9342（2005）07-0058-03 |
| 收稿时间： | 05 16 2005 12:00AM |
| 修稿时间： | 2005-05-16 |
Nonlinear weak signal extracting and predicting for hydro-generator unit |
| |
| Chen Xi-yang,ZHANG Ke-wei,Liu Jie,PENG Yu-cheng.Nonlinear weak signal extracting and predicting for hydro-generator unit[J].Water Power,2005,31(7):58-60. |
| |
| Authors: | Chen Xi-yang ZHANG Ke-wei Liu Jie PENG Yu-cheng |
| |
| Abstract: | Firstly, local weak signal is extracted base on harmonic wavelet, and Newland quick algorithm is adopted to get the result of harmonic wavelet coefficients. Time consumption is decreased and phase is locked in line with harmonic wavelet decomposed. Secondly, the method of calculating maximal Lyapunov exponent and prediction in line with maximal Lyapunov exponent is introduced into hydro-generator unit fields. Finally, simulation of prediction is given to prove the method mentioned in this paper reliable. |
| |
| Keywords: | harmonic wavelet nonlinear chaos Lyapunov exponent prediction turbo-generator set installation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
