magnitude n. 广大,巨大;伟大,重大,重要性;大小;积;量;【数学】量值;【天文学】(恒星的)等,等级,光度。 magnitude equation 【天文学】星等差。 magnitude of eclipse 【天文学】食分。 of the first magnitude(星的光度)(第)一等的;最大的;最重要的(人物等)。
Some methods for overcoming these disadvantages are investigated as follows : first , using shield and magnetic circuit to shorten the sensor length and enhance the signal magnitude ; second , improving the data acquisition system to intensify the capability of fine defect detection ; at last , adopting digital signal processing technology such as homomorphic filter , wavelet transform and error correction to ensure detecting reliability 本文结合有限元仿真和实验方法,研究了改进远场涡流技术性能的几种方法,即:采用电磁屏蔽、磁路进行传感器优化设计以缩短探头长度、增大信号强度;改进信号调理电路以提高细微缺陷检出能力;利用同态滤波、小波变换以及误差修正等数字信号处理技术确保检测结果的可靠性。
Operator on prpd mode of pd signal , mode - classifying implements based on bpnn and sart are compiled . the artificial neural networks designed are applied to recognize measured signals . conclusions are made : recognition rate of bpnn is 95 % , and it is respect to magnitude of discharging signal and increases while signal magnitude increasing ; the recognition rate of sart neural network is 98 % , higher than that of bpnn , recognition rate increasing with the number of signal group 论文用设计的人工网络模式识别程序识别测量信号:以prpd信号模式的放电次数为输入时, bp网络识别率为88 ,识别率和发生局放的强弱程度有关,局放信号越强,识别率越高;以prpd信号模式的统计算子为输入时, bp网络识别率为95 ;以prpd信号模式的统计算子为输入时, sart网络识别率为98 ,识别率随着样本量的增加而提高。