Flux Control Mechanism and Application of Magnetic Fluid.

由于磁流体的磁特性没有滞后性，所以有可能降低损耗。也有可能在大电流激励下使热更低。另一方面，磁流体的磁化特性是宽线性的。这将使波应变和暂态响应变得更小。磁流体电感具有这些有趣的特性，可以用作高频可变电感，利用永磁体可以很容易地受到外部磁场的控制。但由于磁流体的磁导率较低，没有足够的电感可控变量，本课题的研究目的就是解决这一问题。我们试图利用磁性液体研制出具有高磁导率和内激励型可变电感的新型磁性液体。研制了由磁流体感应器和C型铁氧体磁芯组成的组合式磁流体感应器，并对两种磁流体感应器的磁特性进行了对比测试。结果表明，这两种电感的基本原理和特点。

Havirg no hysterisis in magnetic characteristic of magnetic fluid, it is possible to decrease the loss. And also it is possible to make heat lower under the high-current excitation. On the other hand, magnetization characteristic of magletic fluid is wide linearity. It will make wave-strain and transient response smmll. Having these interesting characteristics, the inductor using magnetic fluid can be used as a variable inductor for high frequency, which is easily controlled by external magnetic field using permanent magnet. But magnetic fluid has low permeability, so it has no sufficient inductance controlled variable.The purpose of this project is to solve the mensioned problem. We tried to develope new magnetic fluid which has high permeability and internal excita-tion type variable inductor using magnetic fluid. Conbine type magnetic fluid inductor which is conposed by magnetic fluid inductor and C shape ferrite core is also develloped.The magnetic characteristics of two types of inductor were comparatively examined. The results show the fundamental principle and characteristic of these two types of inductor.