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公开(公告)号：US5448503A
公开(公告)日：1995-09-05
申请号：US220565
申请日：1994-03-31
CPC分类号： B23K31/006 , B23K9/0953
摘要： A system for real-time analysis of weld quality in an arc welding process.he system includes a transducer which receives acoustic signals generated during the welding process. The acoustic signals are then sampled and digitized. A signal processor calculates the root mean square and peak amplitudes of the digitized signals and transforms the digitized signal into a frequency domain signal. A data processor divides the frequency domain signal into a plurality of frequency bands and calculates the average power for each band. The average power values, in addition to the peak and root mean square amplitude values, are input to an artificial neural network for analysis of weld quality. Arc current and/or arc voltage signals may be input to the A/D converter alone or in combination with the acoustic signal data for subsequent signal processing and neural network analysis.
摘要翻译： 一种用于实时分析电弧焊接过程中焊缝质量的系统。 该系统包括接收在焊接过程中产生的声信号的换能器。 然后对声学信号进行采样和数字化。 信号处理器计算数字化信号的均方根和峰值振幅，并将数字化信号转换成频域信号。 数据处理器将频域信号分成多个频带，并计算每个频带的平均功率。 平均功率值除峰值和均方根振幅值外还输入到人工神经网络中，用于分析焊缝质量。 电弧电流和/或电弧电压信号可以单独地或与用于随后的信号处理和神经网络分析的声信号数据组合地输入到A / D转换器。
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公开(公告)号：US5306893A
公开(公告)日：1994-04-26
申请号：US922425
申请日：1992-07-31
IPC分类号： B23K9/095
CPC分类号： B23K31/006 , B23K9/0953
摘要： A system for real-time analysis of weld quality in an arc welding process. The system includes a transducer which receives acoustic signals generated during the welding process. The acoustic signals are then sampled and digitized. A signal processor calculates the root mean square and peak amplitudes of the digitized signals and transforms the digitized signal into a frequency domain signal. A data processor divides the frequency domain signal into a plurality of frequency bands and calculates the average power for each band. The average power values, in addition to the peak and root mean square amplitude values, are input to an artificial neural network for analysis of weld quality. Arc current and/or arc voltage signals may be input to the A/D converter alone or in combination with the acoustic signal data for subsequent signal processing and neural network analysis.
摘要翻译： 一种用于实时分析电弧焊接过程中焊缝质量的系统。 该系统包括接收在焊接过程中产生的声信号的换能器。 然后对声学信号进行采样和数字化。 信号处理器计算数字化信号的均方根和峰值振幅，并将数字化信号转换成频域信号。 数据处理器将频域信号分成多个频带，并计算每个频带的平均功率。 平均功率值除峰值和均方根振幅值外还输入到人工神经网络中，用于分析焊缝质量。 电弧电流和/或电弧电压信号可以单独地或与用于随后的信号处理和神经网络分析的声信号数据组合地输入到A / D转换器。
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