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Abstract: A 3D electromagnet-iron plate model is established and
finite element method (FEM) is used to analyze magnetic field of
electromagnet. The magnetic contact of electromagnet to iron plate is
considered, the conclusion that the magnetic induction density inside of
electromagnet distributes symmetrically about the major axis and
unsymmetrically with regard to the minor axis is put forward. And then,
the curve between electromagnetic force and air gap is gained by
analyzing the influence of air gap on electromagnetic force. At last,
the curve is testified on electromagnet test-bench.
Key words: Electromagnet Finite element method Magnetic field analysis
CLC No: U463.51
浙江省重大科技攻关资助项目(2003C11018).
Received 20050626, received in revised form 20050926
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