| Summary: | 碩士 === 國立高雄應用科技大學 === 機械工程系 === 106 === The study is on magnetic holding device using NdFeB N35 permanent magnet. The coil winding set up inside the device is energized to generate a magnetic field in order to control magnitude of magnetic flux of the magnetic holding device for the purpose of increasing attachment or otherwise unloading magnetic object. The initial model is analyzed by using ANSYS Maxwell, and the result is compared with the measurement of actual model. The geometric parameters are varied in this analysis when the appearance remains unchanged, in order to investigate the influence on magnetic flux of the device.
In the comparison, the maximum error of magnetic flux between the initial model simulation and the actual measurement of energized magnetic holding device is 6%. In the result of different parameters, variation of bottom thickness and internal diameter of the box do not influence magnetic flux significantly. The pole size will change the relative position of coil winding or form a new magnetic circuit. When coil winding is less than 1mm from the surface, it will influence the magnetic flux of surface to a certain extent. Under same power, increasing number of coils will raise the resistance of copper wire, so performance of the device might not be improved. The result also shows dropping voltage will increase current, thus magnetic flux of surface of magnetic holding device can be enhanced directly.
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