1746-NIO4I/B
1746-NIO4I/B
原理基本跟变压器相同。对带有旋转变压的转子线圈施加(1)式交流电压时,就会在转子内产生变换的磁通量。在定子槽中分布着相交的COS线圈和SIN线圈,转子旋转时,磁通量会以轴为中心旋转,定子中的COS卷线和SIN卷线会按照旋转角度θ锁交磁通量,产生(2)(3)式的诱发电压。然后,旋转变压器的COS和SIN的2相输出卷线会把励磁电压转变的Cosθ,Sinθ振幅变调的电压分别输出(图3)。通过2相输出电压值的ArcTAN计算,可以得出旋转角度θ。励磁电压:ER1-R2=E1sinωt(1)输出电压:ES1-S3=kE1cosθsinωt(2)ES2-S4=kE1sinθcosωt(3)
1746-NIO4I/B
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