초록 ▼

An electromagnetic bearing system for a movable (usually rotatable) member on a stationary member has bearing coils wound on a core for producing a magnetic field for supporting the movable member. High frequency sensor currents are applied to the bearing coils or to separate sensor coils on the sam

An electromagnetic bearing system for a movable (usually rotatable) member on a stationary member has bearing coils wound on a core for producing a magnetic field for supporting the movable member. High frequency sensor currents are applied to the bearing coils or to separate sensor coils on the same core or core portion as the bearing coils. The sensor currents produce signals responsive to deviation of the movable member from a desired position in which it is to be supported. These signals are amplified to provide bearing currents which are fed to the bearing coils.

대표청구항 ▼

In an electro-magnetic bearing system for supporting a movable member relative to a stationary member; at least one bearing element which includes at least a one core, and electro-magnetic coil means wound on said one core, means for passing high frequency sensor currents through at least part of sa

In an electro-magnetic bearing system for supporting a movable member relative to a stationary member; at least one bearing element which includes at least a one core, and electro-magnetic coil means wound on said one core, means for passing high frequency sensor currents through at least part of said coil means on said one core, said sensor currents being influenced by movements of said movable member relative to said stationary member in the region of said bearing element, and means including at least one regulating device for producing bearing currents through said electro-magnetic coil means on said one core responsive to said variations in said sensor currents and for applying said bearing currents to at least part of said coil means on said one core, said bearing currents being direct currents which are variable in response to said sensor currents to produce a magnetic flux extending through at least the portion of said core encircled by said coil means and into said movable member to support the latter and whereby said electro-magnetic coil means acts both as a sensor and as a means for producing bearing forces.