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一、前言 测量轧机速度的传统方法是在轧机传动电动机轴上安装测速发电机,并用电磁式仪表测量它的输出电压。这种测量方法的精度受到以下因素的影响:(1)电磁式仪表的测量误差;(2)测速发电机的特性在环境
I. INTRODUCTION The traditional method of measuring mill speed is to install a speed-measuring generator on the shaft of a mill drive motor and to measure its output voltage with a magnetic meter. The accuracy of this measurement method is affected by the following factors: (1) measurement error of the electromagnetic meter; (2) characteristics of the tachometer in the environment