它以SA 4828作为SPWM信号发生器，经过驱动电路控制IPM模块，产生三相变频电源。
The SA4828 used as SPWM signal generator controls the IPM via driver circuits to produce variable frequency power supply.
利用可变频脉冲发生器、光电耦合器和F/V转换器组成输出通道，设定阀值；
The threshold voltage is set by output channel comprised of pulse generator, photoelectric coupler and F/V converter, and the detection result is input through photoelectric coupler.
CLK采用频率可调信号发生器，逐渐改变频率，观察扫描频率的改变对输出效果的影响。
CLK signal generator with adjustable frequency, gradually changing the frequency of observed changes in scan frequency effect on the output.
本设计方案采用83c 251sb型号单片机和SPWM波信号发生器s A 4828组成一种结构简单、成本低、功能较好的变频控制器。
The plan is made up of 83c251sb one-chip computer and SA4828 integration-chip of SPWM wave signal, which is a simple-structure, low-costing and well-functioned variable frequency controller.
直接传动-长轨道、高要求应用、系统由PLC和变频器组成，传动力来源于内部发生器或发生链。
Direct drive - the choice for longer tracks and sophisticated tasks. This system comes with PLC controller and frequency inverter; it gets the power from conductors or on request via conductor chain.
直接传动-长轨道、高要求应用、系统由PLC和变频器组成，传动力来源于内部发生器或发生链。
Direct drive - the choice for longer tracks and sophisticated tasks. This system comes with PLC controller and frequency inverter; it gets the power from conductors or on request via conductor chain.
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