鱼雷技术2011，Vol.19Issue(6)：455-458,4.
一种多测点变工况倍频程快速处理方法
A Fast CPB Processing Method of Off-design Vibration and Noise Data from Multiple Channels
孙涛 1高爱军 1王祎 1都治国1
作者信息
- 1. 中国船舶重工集团公司第705研究所,陕西西安,710075
- 折叠
摘要
Abstract
To solve the time-consuming and laborious problem in processing the off-design vibration and noise data from multiple channels through the traditional constant proportional bandwidth (CPB) method, an improved CPB method is proposed. Firstly, the data from all channels are divided into multi-segment, and each segment is calculated via octave algorithm based on fast Fourier transform (FFT) algorithm. Secondly, technical parameter mean and average octave sequence are calculated according to the starting and ending time corresponding to the stable condition determined by the condition parameter curve. Finally, technical parameter mean and average octave sequence of the same working condition are adjusted to the adjacent columns by indexing the condition-determining parameters. Engineering application shows that the analysis efficiency and depth of test data are improved significantly.关键词
倍频程分析方法/振动噪声/数据处理/倍频程谱Key words
constant proportional bandwidth (CPB) method/vibration and noise/data processing/octave spectrum分类
军事科技引用本文复制引用
孙涛,高爱军,王祎,都治国..一种多测点变工况倍频程快速处理方法[J].鱼雷技术,2011,19(6):455-458,4.
