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Abstract: Based on summarizing and comparing the methods of
calculating the disturb torque acted on electrostatically supported
rotor, a proper method, that is calculating the torque caused by
electrostatic force relative to rotor’s mass center, is employed to get
the torque in device with 6-electrodes construction which forms a
half-bowl shape. The torque is described in terms of the rotor’s
eccentricity relative to the electrodes case, rotor’s non-sphericity,
the deviation angle of rotor’s spin axis relative to shell
coordinate, voltage on electrodes and empty electrodes which is not
occupied by electrodes over the entire electrodes case’s surface .
Simulation results confirm the range of those parameters by which the
disturb torque will be smaller than a certain value. The outcome is
helpful to design the balance device for spherical rotor.
Key words: Half-bowl support Disturbing torque Equilibrium
CLC No: U666
国防基础与应用预研项目(9.4.4). Received 20020115, received in revised form 20021112
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