【作者】 黄耀清；

【导师】 全力；

【作者基本信息】 江苏大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 目前，国内外对房车类拖车制动系统的一个功能部件——电磁体的研究很少。因此，开展电磁体的研发，既是提高汽车制动器产品性能的需要，又能为我国企业参与国际市场竞争提供有力支持，同时也可以起到推进我国汽车制动器行业科技进步的作用。本文以电磁场的有限元分析方法为理论指导，在Maxwell 3D仿真软件的基础上，首先对对称结构的椭圆形电磁体进行了较为详细的仿真分析，包括电磁体在各种电流情况下的磁场分布、电磁吸力与气隙的关系、电磁吸力与电流的关系，并结合实验数据确定了电磁体与摩擦盘的实际工作气隙；紧接着结合仿真结果设计出三种规格尺寸的非对称电磁体结构，并逐一对每种电磁体结构进行了理论仿真分析，判断其是否符合项目给定的电磁吸力指标要求；在搭建的实验平台上对每种加工成型的电磁体样品进行了试验，得到一系列有效的实验数据，验证了理论分析与设计的正确性；分析了电磁体磁路和绕组的成本和电磁吸力的关系，找到了节约电磁体金属材料的方法；分析了电磁体在工作时候的温度分布情况，验证了电磁体能够安全稳定的工作的准确性。更多还原

【Abstract】 As a functional part of the dragging system in vehicles, electromagnet gained few researches in the past few years at home and abroad. Exploiting new types of electromagnets can not only improves the capability of vehicles’ brakes, but also gives powerful supports for enterprises to participate in the international market. Meanwhile, the practical sense of such study is obvious to the progress of science and technology about vehicles’ brakes system.Firstly, directed by the methods of FEA about electromagnetic fields, more detailed analysis of imported electromagnet is done based on Maxwell simulation software, including the distribution of magnetic field on the electromagnet surface under different current conditions; the relationships between electromagnetic suction and air gap; the connections between electromagnetic suction and current; confirmed the actual air gap between the electromagnet and the friction disk combined with the experimental datum. Secondly, combined with the simulation results to design three different kinds of electromagnet with asymmetry magnetic circuit structures, and there simulation results is expatiated, every kind of electromagnet is judged whether accords with the target given by the item. Lastly, through rational design, tests about those finished product of electromagnet are done, and gained series of effective datum, validated the correctness of theoretical analysis and design. Lastly, The relationship between the electromagnetic force and the cost of magnet and coil is also researched, and the way to reduce the usage of the materials is discovered. The temperature distribution of the magnet is analyzed while operating, which has validated that the magnet can be steady-going and safe. The design of asymmetry electromagnet triumphantly applied for the patent on vehicle electromagnetic brake asymmetry magnetic circuit electromagnet technology.更多还原