摘要
基于弹性波的主动监测技术是近年来发展起来的一种智能监测技术,把基于弹性波的主动监测技术应用到输电线的损伤监测定位,采用Gabor小波变换计算损伤反射信号到达时间延迟的原理,进行了输电线损伤监测定位实验研究;研究结果表明:开发的圆弧形压电陶瓷片和夹持装置进行弹性波的信号激励和传感,可以很好地进行输电线损伤主动监测,采用Gabor小波变换计算损伤反射信号到达时间延迟效果较好,损伤定位精度较高,误差不超过0.11m。
Active monitoring technology based on elastic wave is in recent years developed a kind of intelligent monitoring technology, The active monitoring technology based on elastic wave was used to monitor transmission line damage location in this article, damage reflec- tion signal is obtained by using the Gabor wavelet transform to the principle of time delay, the transmission line damage monitoring location and experimental research were carried out. Research results show that the circular piezoelectric ceramic chip and clamping device developed for elastic wave signal excitation and sensing, is a good way to active monitoring of transmission line damage, damage is obtained by using the Gabor wavelet transform reflected signal arrival time delay effect is better, and damage location accuracy is higher, error is less than 0.11 m.
出处
《计算机测量与控制》
北大核心
2013年第11期2950-2952,共3页
Computer Measurement &Control
关键词
弹性波
输电线
主动监测
GABOR小波
损伤定位
elastic wave transmission line active monitoring gabor wavelet damage localization
