Ways of Potential Minimization of Rotor in Spherical Electrostatic Hanger

Problems of potential minimization of rotor in spherical electrostatic hanger are considered. The induced potential is analyzed for direct current hangers at two possible variants of potential control at hanger electrodes. Recommendations are given on selection of the potential control law that provides the least induced potential not only for a central position of the rotor but also for its displacements relatively to the hanger center.