中文摘要：

研制了一种嵌入主磁路铁芯的可变磁阻器，它融合了蝶阀和球阀的概念，用非铁磁质阀板和铁磁质阀板夹共同构成阀芯，通过改变阀板的法线与铁磁质阀座主磁通方向的夹角，改变主磁通方向铁磁质的有效截面造成局部饱和的方式来调节磁阻，将可变磁阻器串接于主磁路中构成可变电抗器进行了实验，表明该实物模型不需外加电生磁动势，便能对铁芯有效磁阻率进行直接、实时和平滑地调节．文中基于正弦波磁感应强度的幅值推导出可变磁阻器的有效磁阻率、定性地描述了旋阀的受力状态，分析了实验结果并对扩大磁阻调节范围和提高线性度等问题给出了改进措施，可望为探索磁元件新结构、提高磁类参数调节效果的研究提供参考．

英文摘要：

In a magnetic component, said valve is connected in tandem with valve housing and seat in soft magnetic core to form a series circuit. Valve shaft of said core is perpendicular to the main magnetic flux core controlled by said valve. Said valve body is constituted by insulating and diamagnetic butterfly valve plate and soft magnetic valve plate. These plates can revolve around valve shaft to do continuous angular displacement and angular positioning. Insulating and diamagnetic butterfly plate can have a maximum reluctance value of the valve, wherein a closed state of the valve is maintained. The present solution is advantageous in that： it does not require coil tap, additional coil and associated circuitry. Yet it can control magnetic flux through the valve, achieve the reluctance stepless adjustment and control the opening and closing state of the magnetic circuit where the valve is located. It overcomes the disadvantages, like power circuit, interrupter and cost increasing caused by additional electrical switches. In this solution, there is no air gap in the magnetic component. In addition to controlling opening and closing state of the magnetic circuit where valve is located, this solution can not only control flux through the valve without changing the size of the air gap, but also achieve reluctance stepless adjustment. It overcomes noise, vibration and electromagnetic interference brought about by core air gap. This paper provides photographs and experimental waveform. The experimental results and theoretical analysis can verify each other.