该滤波器通过处理输入离散采样信号获得连续信号并抑制谐波噪声，改进了过零测频方法。
The filter processes input discrete sampling signal to recover continuous signal and suppress harmonic noise, and the zero-crossing frequency measuring method is improved.
提出动态采样区域法进行离散采样、数字滤波，实现焊缝双向跟踪，使系统抗干扰能力强。
In the sampling range digital filter was done. The dual directional seam tracking was achieved by this control system and anti disturbance was strengthened.
该装置的主要特点是不必使用任何数字仪表和电量变送器，各电量的测试是采用离散采样、数据处理的方式来实现。
With sampling the required data point by point without any digital meters and parameter transducers the computer finds various values of current, voltage and power by data processing.
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