Brushless spindle DC motor used as an actuator to create radial force
AssigneeSeagate Technology LLC
InventorsGunter K. Heine, Hans Leuthold, Christian Fleury
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Abstract
An apparatus for stabilizing the spin axis of a rotating system, the rotating system having a rotor and motor means to cause rotation of the rotor about the spin axis and a magnet, windings, a source of drive current and an actuator combined with the motor means and forming a source of actuator current energizing the windings to generate a radial force which stabilizes the position of the spin axis and dampens other than rotational movements of the rotor.
Claims66
An apparatus for stabilizing the spin axis of a rotating system, said rotating system comprising:
- a rotor carrying and inertial load and bearing means to support said rotor about said spin axis, and
- motor means to cause rotation of said rotor about said spin axis comprising:
- a first set of windings;
- a source of drive current for causing relative rotation between said windings and said magnet;
- and
- an actuator combined with a motor and comprising a source of actuator current energizing said windings to generate a radial force which stabilizes the position of said spin axis and dampens movements of said rotor.
An apparatus for stabilizing the spin axis of a rotating system, said rotating system comprising:
- a rotor carrying and inertial load and bearing means to support said rotor about said spin axis, and
- motor means to cause rotation of said rotor about said spin axis comprising:
- a first set of windings;
- a source of drive current for causing relative rotation between said windings and said magnet;
- and
- an actuator combined with a motor and comprising a source of actuator current energizing said windings to generate a radial force which stabilizes the position of said spin axis and dampens movements of said rotor.
Dependencies are inferred from the claim text.