关键词: 电磁铁, 等效磁路, 电磁吸力, 有限元, 锥形磁极

Abstract: In order to improve the design efficiency of tapered pole electromagnet,the complicated modeling of finite element method is avoided. A tapered pole electromagnet with a suction of no less than 50 N was taken as an example to simplify the equivalent magnetic circuit, analyze the magnetic resistance of the magnetic circuit, and deduce the analytical model between the electromagnetic suction characteristics and the main dimensions of the electromagnet under the 0 degree tapered pole.The conclusion of the analysis provided a preferable plan for the optimal design. The optimum scheme was used to optimize the suction of different tapered pole angles by finite element method,and the optimum scheme of electromagnetic suction under 60 degree tapered pole was obtained.At the same time, the accuracy of the analytical model of electromagnet under 0 degree tapered pole was verified. The optimization results were compared with the prototype test results, which proved that the proposed method and conclusion are correct.It's a simple and applicable method for the development and design of tapered pole electromagnet.

Key words: electromagnet, equivalent magnetic circuit, electromagnetic force, finite element, tapered magnetic pole