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Table 1 Main parameters of AMB

From: Dynamic Stiffness Analysis and Experimental Verification of Axial Magnetic Bearing Based on Air Gap Flux Variation in Magnetically Suspended Molecular Pump

Description Parameter Value
Rotor outer diameter r0 (mm) 8
Inner magnetic conducting ring outer diameter r1 (mm) 14
Inner magnetic conducting ring inner diameter r2 (mm) 17
Outer magnetic conducting ring inner diameter r3 (mm) 27
Outer magnetic conducting ring outer diameter r4 (mm) 30
Air gap length g (mm) 0.35
Thrust plate thickness h1 (mm) 4
Axial length of winding slot h2 (mm) 6.4
Axial length of outside magnetic conducting ring h3 (mm) 8.5
Number of turns N (turns/pole) 300
Bias current I0 (A) 0.5
Relative permeability μ 1000
Conductivity σ (S/m) 7.46 × 106