磁力轴承磁场中等效力矩的研究

发布时间：2018-01-01 06:02

本文关键词：磁力轴承磁场中等效力矩的研究　出处：《武汉理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：磁悬浮技术是利用磁场力达到非接触式支撑的和新型技术。磁悬浮技术的应用主要分为两个方面：一是利用直线电机对悬浮体进行牵引,使其在特定铺设的轨道上运行,形成磁悬浮列车；二是将悬浮体用旋转电机来驱动,使其绕特定的轴线旋转,即磁悬浮转子。磁力轴承采用磁悬浮技术,具有无机械接触、无磨损、无需润滑、适合高速运动和主动控制显著等优点,但是不能保证磁力轴承转子运动过程中没有外部阻力作用。本文将磁力轴承转子运动过程中的能耗(不包含风损)等效为阻力矩,定义该阻力矩为磁力轴承磁场中的等效力矩。磁力轴承转子系统运动中的能耗主要分为铜损、铁损。铜损产生于定子的线圈中,铁损同时产生于定子和转子中；从整个磁悬浮系统的能量来看,磁力轴承的能量损耗还包含空气的摩擦损耗,转子振动的损耗,由于空气损耗不是磁力轴承所特有的问题,且有较为完善的理论体系,本论文并不研究其特性。本文通过实验研究径向磁力轴承和轴向磁力轴承在磁场中受到的等效力矩,由于两种磁力轴承结构的不同,本文对它们分开进行研究。利用课题组自主研发的相关装置,通过实验方法研究两种磁力轴承最小单元(U电磁铁单元)的等效阻力。以U型电磁铁为研究载体,对磁力轴承的等效力矩进行研究,得出相关推论公式,并利用课题组研发的五自由度磁悬浮主轴对等效力矩进行验证。
[Abstract]:Maglev technology is the use of magnetic field force to achieve non-contact support and new technology. The application of magnetic levitation technology is mainly divided into two aspects: one is the suspension traction by linear motor to run on a particular track laying, the formation of the maglev train; two is the rotary motor driven by suspension, make it around the axis of rotation, the magnetic suspension rotor.
The magnetic levitation technology of magnetic bearing, has no mechanical contact, no wear, no lubrication, suitable for high speed movement and active control of significant advantages, but can not guarantee that no external force of magnetic bearing rotor movement process. The energy consumption of magnetic bearing rotor movement in the process (not including wind damage) is equivalent to the definition of resistance moment. The resistance moment for the equivalent moment of magnetic bearing in magnetic field. The energy movement of magnetic bearing rotor system is mainly divided into copper loss, iron loss, copper loss generated in the stator coil, the iron loss generated at the same time on the stator and rotor; from the whole system of energy, the energy loss of the magnetic bearings also includes air friction loss the loss of rotor vibration, due to the unique air loss is magnetic bearing, and a perfect theory system, this thesis does not study its properties.
The equivalent moment through experimental study of radial magnetic bearing and axial magnetic bearing in magnetic field, because the two kinds of magnetic bearings with different structures, this paper separately studied. Related research group of independent research and development of the device, through the experimental method of two kinds of magnetic bearing unit (U electromagnet unit) equivalent resistance. The U type electromagnet as the carrier, the equivalent moment of magnetic bearings is studied, draw relevant inference formula, and validate the equivalent moment using the group's research and development of five degree of freedom AMB.

【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.3

【相似文献】