Research on influencing factors of magnetic property test of permanent magnetic ring.

This paper explores the influencing factors of magnetic property test of permanent magnetic ring. Firstly, the finite element simulation method is used to analyze the influence of the size and material of center core and back iron on the magnetic property test results of permanent magnet ring. The results show that the size of center core and back iron has a great influence on the test results, and the material (soft magnetic material) has little influence on the test results. Then, center cores and back irons of different materials and sizes are processed for experiments, and the experimental results are consistent with the simulation results. Finally, the formula for critical size of back iron is deduced. This paper has certain reference significance for the selection of permanent magnet ring in motor and the standardization of magnetic property test of permanent magnet ring. [ABSTRACT FROM AUTHOR]