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本控制器利用AT90S8515中定时器计数器1的PWM输出功能控制正弦波调幅模块ZXB-10A-F/H,实现对工频离心风机的无级调速,使净化台的排风量实现平滑控制。
This controller uses the PWM output function of timer counter 1 of AT90S8515 to control the sine wave amplitude modulation module ZXB-10A-F / H to realize the stepless speed regulation on the centrifugal fan with frequency frequency, so as to realize the smooth control of the discharge air volume of the purification table.