We have studied the method of eliminating the harmonic wave of SCR regulating-speed device a servosystem and increasing its power supply unit' s loading ability when its current is large.
研究了随动系统中SCR调速装置在大电流时，消除其谐波并使供电装置负载能力提高的方法；
According to the adjusting principle of current bi-colsed, PLC and 6ra70 digital DC speed regulating device is adopted, which controls over the system of the rolling mill.
根据电流双闭环调速原理，采用6ra70直流全数字调速装置与P LC结合，控制材轧机电系统。
According to the adjusting principle of current bi-colsed, PLC and 6ra70 digital DC speed regulating device is adopted, which controls over the system of the rolling mill.
根据电流双闭环调速原理，采用6ra70直流全数字调速装置与P LC结合，控制材轧机电系统。
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