Research on Automatic Balance Control of Active Magnetic Bearing-Rigid Rotor System

Table 2

Parameters of the AMB-rotor system.

Parameter	Value
Rotor shaft mass (m)	21.0 kg
Transverse moment of inertial (Jx, Jy)	0.775 kg·m^2
Polar moment of inertial (Jz)	0.021 kg·m^2
Distance from AMB (A) to mass center (lma)	0.173 m
Distance from AMB (B) to mass center (lmb)	0.142 m
Distance from sensor (A) to mass center (lsa)	0.201 m
Distance from sensor (B) to mass center (lsb)	0.168 m
Current stiffness (ki)	258.04 N/A
Displacement stiffness (kx)	9.03 × 10^5 N/m
Power amplifier gain (ka)	0.4 A/V
Time constant of power amplifier (Ta)	5.8 × 10^−4
Displacement sensor gain (ks)	7500 V/m
Time constant of sensor (Ts)	2 × 10^−4