The paper aims to give the step by step design procedure of an electromagnetic bearing having eight pole for machine tool applications having the shaft diameter of 20 mm and rotate with the speed of 750 rpm. The mathematical procedure consists of the geometrical as well as constraints due to losses occur in the electromagnetic bearing which makes the designing more accurate. Finally, optimization has been done to get the optimum values of the dimension of the electromagnetic bearing. By interior trust method numerical optimization has carried out to find out the optimum values of the dimensions of an electromagnetic bearing to maximize the electromagnetic force exerted by it. This has supported by a CAD model using Solid Works showing the dimensions of the model. The mathematical model compared with the available literature on electromagnetics bearing and found to be an effective with consideration of all iron and copper losses. The results show the designed bearing can produce a magnetic force of 166 N from each electromagnet on the shaft. For the application an electric hand drill machine has to be taken and an electromagnetic bearing consists of 8 electromagnets has been designed which is capable of generating 29 N of electromagnetic force onto the shaft of the electric hand drill machine.

本文旨在逐步给出一种用于机床应用、轴直径为20 mm、转速为750 rpm 的八极电磁轴承的设计过程。数学程序包括几何以及由于电磁轴承中发生的损耗而导致的约束，这使得设计更加准确。最后进行优化，得到电磁轴承尺寸的最佳值。通过内部信任法进行数值优化，找出电磁轴承尺寸的最佳值，使其施加的电磁力最大化。这得到了使用 Solid Works 的 CAD 模型的支持，该模型显示了模型的尺寸。该数学模型与有关电磁轴承的现有文献进行了比较，发现在考虑所有铁损和铜损的情况下是有效的。结果表明，设计的轴承可以从轴上的每个电磁体产生 166 N 的磁力。对于该应用，必须采用手电钻机，并且设计了由 8 个电磁体组成的电磁轴承，能够在手电钻机的轴上产生 29 N 的电磁力。