重点分析单相交流感应式液态金属电磁泵波峰焊接设备技术的工作原理、技术特征；
Analyse principle of operation, technology feature of single-phase alternating current induced liquid metal electromagnetic pump wave soldering machine.
主要特征：由于采用感应电机，使手持式圆锯真正实现台式圆锯的性能。
Mainly feature: use induction motor so that the handy circular saw come true table circular saw's function.
根据速度传感器的型号，每一个轮齿产生的脉冲数可以是2 - 16，并通过实时处理的特征，确保这一脉冲从第一个轮齿开始旋转时就能感应到。
Depending on the sensor model the number of pulses resulting from each gear tooth may be 2 to 16, with the nature of the realtime processing ensuring that this occurs from the first tooth sensed.
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