磁电感应数字式转速计  

Study of the digital tachometer of the electro-magnetic induction

作　　者：赵林军[1] 任艳玲[1] 丁力[1] 

机构地区：[1]陕西理工学院电信系,陕西汉中723003

出　　处：《陕西工学院学报》2002年第3期26-28,共3页Journal of Shaanxi Institute of Technology

摘　　要：采用变磁阻法改变初级线圈的磁通 ,在次级绕组上得到相应的感应电势。该感应电势随磁阻变化率的增大而增大。采用巧妙的转子结构实现磁阻变化 ,该方法可直接获取数字信号输出 ,输出信号幅度大 。One of the digital tachometer of the electromagnetic induction is introduced. The induced electromotive force at the secondary coil can be got by changing the flux of the primary coil. And the force of magnetic is amplified in proportion to the amplification of the magnetic resistance. The digital output can be directly obtained by using this method. Thus the range of putting out signals is big enough and produces a strict linear relationship with rotating speed.

关 键 词：磁电感应数字式转速计 磁阻 感应电势 转速测量 测量电路 测量原理 

分 类 号：TH824.1[机械工程—仪器科学与技术]