In precision equipment analysis that requires high accuracy of operation, high accuracy is also required for the minute electromagnetic force generated by leakage flux and so on. However, the mesh division will introduce errors that will present the evaluation of force smaller than the present error. For example, when calculating the force acting between the coil and the magnet, if the current supplied to the coil is reduced, it will be obscured by the error and the correct force will not be obtained. This issue is improved by using adaptive mesh but it is not solved.
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