单片机对焊接电流、电弧电压、电流给定、脉冲周期、占空比、基值电流、收弧电流衰减时间、前气和后气时间等焊接参数进行采样、计算和控制。
The welding current, arc voltage, preset current, the period and ratio of pulse, base current, down slope time, gas pre and post flow time are sampled, calculated and controlled by microprocessor.
在周期电气信号的微机测量中普遍采用等间隔同步交流采样。
In digital measurement of period electric signals, uniform and synchronous sampling is a commonly used method with high performance and low computational complexity.
为了提高频谱分析的精度，要求对振动信号进行整周期等相位采样。
In order to improve the accuracy of spectrum analysis, it's better to sample the vibration signals in the way of full cycle and equal phase.
智能型真有效值电压监测仪，采用AT89C52单片机，在一个周期内对电网电压等间距采样N次。
Singlechip AT89C52 was adopted by intelligent real available value voltage-monitoring apparatus to sample N times for the electrical network voltage between equal spaces in one cycle.
与异步采样电路相比，同步采样电路具有周期短、失真小等优点。
Compared with asynchronous sampling mode, synchronous circuit has the advantages of short sampling period and small distortion.
与异步采样电路相比，同步采样电路具有周期短、失真小等优点。
Compared with asynchronous sampling mode, synchronous circuit has the advantages of short sampling period and small distortion.
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