磁気軸受の動特性シミュレーション

概要

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The step response in the axial direction of a rotor suspended by five axis-controlled active magnetic bearings was measured and compared with two kinds of numerical simulations; a simple model and an FEM model. Tests were performed up to a large rotor displacement which exceeded the linear range of the design condition. The agreement of the simulated results of the FEM model with the experiments was superior to that of the simple model. Factors considered only by the FEM model were the two-dimensionality of the magnetic field including leakage flux, voltage-current characteristics of the control coil, non-linear magnetic characteristics of the pole pieces (B-H curve), and eddy currents. The most influential factor was the magnetic leakage flux which increased the induced voltage and the time constant of the control coil.
一般社団法人日本機械学会の論文
1988-12-20