静态试验研究表明：木材的含水率能引起电涡流传感器的输出电压下降，但下降的幅度甚微；
Static experimental test shows that wet wood can make tiny decline to the output voltage of eddy current sensor.
其次，本文采用直流电压外环、电流内环的双闭环控制方法，既保证了逆变器输出的静态误差为零，又保证了逆变器良好的输出波形。
Secondly, the DC voltage loop and inner current closed-loop control method, both to ensure zero static error of the inverter output, but also to ensure that the inverter output waveform.
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