Magnetic levitation rotating machine

A magnetic levitation rotating machine comprising:

• a rotator;
• an electromagnet or a permanent magnet supporting the rotator in a levitated state by a magnetic force of the electromagnet or the permanent magnet;
• the rotator comprising a position detection planar surface further comprising a concave and/or a convex provided in the planar surface;
• a displacement sensor on a fixed part of the machine, to detect a displacement of the planar surface including the concave or the convex;
• and
• a detection mechanism detecting the displacement of the rotator and a rotating speed of the rotator from an output of the displacement sensor;
• wherein the displacement of the rotator is detected by excavating, from the output of the displacement sensor, the displacement of the planar surface with the component representing the concave or the convex being removed therefrom.

A magnetic levitation rotating machine comprising:

• a rotator;
• an electromagnet or a permanent magnet supporting the rotator in a levitated state by a magnetic force of the electromagnet or the permanent magnet;
• the rotator comprising a position detection planar surface further comprising a concave and/or a convex provided in the planar surface;
• a displacement sensor on a fixed part of the machine, to detect a displacement of the planar surface including the concave or the convex;
• and
• a detection mechanism detecting the displacement of the rotator and a rotating speed of the rotator from an output of the displacement sensor;
• wherein at least one pair of the displacement sensors is disposed at an arbitrary angle to the center of rotation of the rotator;
• the detection planar surface is disposed so as to face the displacement sensors;
• the concave and/or the convex is disposed so as to correspond to the positions of the displacement sensor at the arbitrary angle to the center of rotation of the rotator;
• and
• the position displacement and rotation speed of the detection planar surface are computed from the outputs of the at least one pair of the displacement sensors and are output to detect the displacement of the rotator and the rotating speed of the rotator.

A magnetic levitation rotating machine comprising:

• a rotator;
• an electromagnet or a permanent magnet supporting the rotator in a levitated state by a magnetic force of the electromagnet or the permanent magnet;
• the rotator comprising a position detection planar surface further comprising a concave and/or a convex provided in the planar surface;
• a displacement sensor on a fixed part of the machine, to detect a displacement of the planar surface including the concave or the convex;
• and
• a detection mechanism detecting the displacement of the rotator and a rotating speed of the rotator from an output of the displacement sensor;
• wherein the detection planar surface of the rotator is comprised of a thrust disk formed of a magnetic material, which is an object to be controlled by an electromagnet for axial levitation position control.