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JPH1144321A |
To continuously measure the actual temperature of a magnetic bearing without adding a temperature sensor thereto by detecting the direct current resistance of the coil of an electromagnet, because change of the direct current resistance ...
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JP2852747B2 |
An internal grinding machine comprising support means (7) for holding a workpiece (1); a spindle (2) having a grinding wheel portion (3) arranged to carry a grinding wheel (4); bearing means (11-13) for rotatably mounting the spindle (2)...
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JPH1110487A |
To provide a position detection device which employs magnetic bearing spindles which can machine and detect positions using the same magnetic bearing spindles. A magnetic bearing spindle 20 is moved in the direction of X-Y coordinate tow...
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JPH10325415A |
To provide the magnet part reinforcing structure of a superconduction magnetic bearing device to improve a compression force exerted on a magnet part on the inner peripheral side. In a magnet part reinforcing structure, a magnet part mou...
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JP2826156B2 |
A spindle motor for high speed hand tools is disclosed. The spindle motor includes a rotor (28) and a sleeve (21) that is journaled about the rotor (28). A pressure generating mechanism creates sufficient air pressure in a clearance (52)...
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JPH10306823A |
To provide a permanent magnet to stably support a rotary body and a rest body in a noncontact state by utilizing magnetic force. Two permanent magnets 10A and 10B the whole of which is formed in a conical trapezoidal cylindrical shape an...
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JP2824459B2 |
A magnetic bearing device comprises a movable member (1) disposed between first and second supporting members (2, 3) provided with a first coil (7) and a second coil (14), respectively. A detector (29) detects the position of the movable...
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JPH10299770A |
To provide a bearing device for a rotatable shaft body, for supporting a means arranged to perform the operation in the rotation of a shaft body. A shaft body is supported in the radial direction in at least one radial bearing 3 for allo...
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JP2821592B2 |
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JP2813488B2 |
Vacuum pump comprising a stator (1A, 1B) and a rotor (2), the rotor being rotatably driven by a driving motor (6, 7, 8) integrated with the pump and being supported by magnetic bearings, the rotor having a bell shape going over an intern...
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JP2814153B2 |
An energy storage device which comprises at least a first object having a rotational mechanism which rotates around an axis and a surface which generates a magnetic field; at least a second object comprising a superconductor and having p...
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JPH10281157A |
To ensure the capacity of thrust for a high horsepower turbo machine by arranging a plurality of electromagnets on a plurality of stator extending parts respectively, and controlling current which flows the electromagnets by a controller...
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JP2799802B2 |
PURPOSE: To make the surface flux density of a permanent magnet uniformizable as well as to secure the smooth rotation of a turntable, in a superconductive floating type turning gear that sets up a ringlike permanent magnet and an oxide ...
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JPH10248218A |
To provide a maglev motor, which can be controlled stably for its floating position by eliminating the influence of an induced current generated in a secondary conductor by n-pole pairs of position control magnetic fields without hinderi...
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JP2786955B2 |
The invention describes an arrangement for optimum flooding of high speed vacuum pumps. The actuation of the flood valve (6) is controlled by the forces, which, among other things, are exerted upon the rotor by the flooding process. Thes...
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JPH10213146A |
To reduce pressure in a housing with a flywheel accommodated therein without using a vacuum pump so as to reduce energy loss during rotation of the flywheel in a flywheel device for rotating the flywheel at high speed with input energy s...
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JPH10215547A |
To provide a magnetic bearing motor, whose control stability as a magnetic bearing does not deteriorate by the increase of a torque flux Φq, even if a torque fluctuates and the torque flux Φq is increased. Control magnetic fields of (m...
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JPH10507809A |
A high temperature superconducting bearing including a permanent magnet rotor levitated by a high temperature superconducting structure. The rotor preferably includes one or more concentric permanent magnet rings coupled to permanent mag...
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JP2777727B2 |
PURPOSE:To accomplish rotary drive stably even in the case of low-speed rotation by providing a superconductive material for supporting in the thrust and radial directions on a rotary shaft, fixedly disposing a magnet opposite thereto an...
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JP2776871B2 |
A band pass filter multiplies an input waveform with first trigonometric functions at a plurality of frequencies and then filters the products. Furthermore, with that filtering step, the products are multiplied, or their phase is changed...
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JPH10184685A |
To provide a magnetic bearing that can miniaturize a driving motor and reduce the number of components. A sleeve 20 is supported in an axially levitated state by horizontal magnetic attracting force generated between a levitating permane...
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JPH10176714A |
To increase a wear resisting strength and resistance to burning in the track surface of a touchdown bearing by making the turning wheel of a touchdown rolling bearing with steel and a rolling element with ceramic in a magnetic bearing de...
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JPH10159849A |
To provide a magnetic bearing easy to manufacture with a small capacity. For active centering of a ferromagnetic movable portion corresponding to a fixed portion, a magnetic bearing has main magnetic poles 21, 22 and a center ferromagnet...
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JPH10159707A |
To rotatably support the end of a rotating shaft to which a flywheel is fixed in the non-contact state by adding a bearing function in the radial direction to a magnetic bearing for supporting the end of the rotating shaft. A magnetic be...
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JPH10506176A |
(57) [Summary] A core (29) that defines a pair of poles (31), a core that produces magnetic flux that passes from one pole (31) of two pairs of poles to the other pole (31) when urged. (29) The coil (35) installed on top, and the rotor i...
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JPH10131966A |
To enhance radial restoring force with simple structure and prevent the generation of demagnetization with the lapse of time by forming the overlapped structure of a plurality of ring-like permanent magnets on both rotating side and fixe...
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JPH10504874A |
A high temperature superconductor material bearing system (38) This system (38) includes a rotor (50) having a ring permanent magnet (60), a plurality of permanent magnets (16, 20 and 70) for interacting to generate levitation forces for...
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JPH10504700A |
An apparatus and method for reducing magnetic field inhomogeneities which produce rotational loss mechanisms in high temperature superconducting magnetic bearings. Magnetic field inhomogeneities are reduced by dividing high temperature s...
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JPH1082420A |
To improve a control performance by reducing the number of A/D converters, reducing a conversion speed and increasing a sampling frequency. The sensor output of the axis of 1-5 channels is given to MPU6 and a control calculation is carri...
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JPH1073006A |
To guarantee smooth high rotation by providing with a ferromagnetic circuit including a faced centering member in which restoring force is generated to the displacement of the radial direction of a rotor to a stator, in a device provided...
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JPH10502722A |
PCT No. PCT/GB95/01521 Sec. 371 Date Jan. 6, 1997 Sec. 102(e) Date Jan. 6, 1997 PCT Filed Jun. 28, 1995 PCT Pub. No. WO96/01956 PCT Pub. Date Jan. 25, 1996A back-up bearing arrangement (25) for a magnetic bearing (12, 13) includes a stat...
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JPH1061667A |
To prevent the whole size from becoming larger in a magnet bearing. A magnet bearing has a first part 11 and a second part 12, and the first part contains two parallel ferromagnetic substance plates 13 and 14, a core 15 to carry a coil 1...
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JPH1061666A |
To reduce the volume by making it active along the single axis of ordinate and at least the single axis of abscissa. A magnetic bearing has at least a single first coil 24 and first magnetic pieces 21 and 22 arranged in the horizontal di...
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JP2717819B2 |
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JPH10502145A |
A turboexpander associated with a rotary compressor by means of a rotor shaft connecting the two. A bearing housing includes magnetic radial and thrust bearings which control the placement and dynamics of the shaft within the housing. A ...
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JP2713406B2 |
A shaft support comprising a shaft (3) supported by a radial and an axial static fluid bearing, which shaft is rotatably arranged in a bearing sleeve (1) and is provided with a flange-shaped compensation member (31), of which a part is s...
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JPH1037959A |
To provide a magnetic bearing device which receives the axial load of a rotary shaft and supports the shaft, and is easy in assembly and adjusting work and low in manufacturing cost and moreover compact. This magnetic bearing device has ...
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JP2711929B2 |
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JPH10501326A |
A DC-biased axial magnetic bearing includes a rotating member (50) (or shaft) having a radially extending tab (or support) (52) located between a pair of teeth (62, 64) of a C-shaped control member (60). A permanent magnet (68) provides ...
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JP2700904B2 |
A method for controlling an initial position of a magnetically levitated body comprises sensing the position of the levitated body by position sensors and applying exciting currents to electromagnets in response to the sensed position to...
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JPH1019042A |
To prevent the contact of a rotary shaft with a stator side caused by the excessive centrifugal whirling of the rotary shaft at a nearly dangerous speed at a time of acceleration from the static floating state of the rotary shaft to a ra...
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JPH09329142A |
To provide a magnetic actuating device equipped with nonmagnetic wall inside a gap. A magnetic actuating device such as a magnetic bearing includes a stationary part 2 and a movable part 1. These parts are ferromagnetic, and a gap E exte...
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JP2689834B2 |
PURPOSE: To surely capture magnetic fluid, flowing out from a magnetic fluid sealing magnetic seal, by forming a magnetic thrust bearing by opposing the external periphery of a stator side permanent magnet to the internal periphery of a ...
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JPH09313600A |
To provide a magnet-combining centrifugal pump without drawing air into a blood room and without increasing the blood filling quantity and the radial propelling force of the vane wheels. This centrifugal liquid pump 1 is equipped with a ...
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JP2553059Y2 |
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JP2669549B2 |
This invention relates to a magnetic disk apparatus equipped with magnetic bearings for supporting a spindle without contact by a magnetic attracting or repulsing force. The magnetic disk apparatus prevents occurrence of oscillation of m...
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JP2670986B2 |
PURPOSE: To provide an electromagnetic rotating machine in which the mutual coupling between a stator side position control winding and a rotor winding can be very small or zero. CONSTITUTION: 4-pole stator windings for torque generation...
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JPH09510771A |
(57) the magnetic bearing for a magnetic active centering in alignment with the centering axis of the 2nd body (B) that carries out relative motion to the 1st body (A) of a summary, The 1st ferromagnetic part by which the part is enclose...
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JPH09269007A |
To provide a passive magnetic bearing which does not generate vortex current when a rotor is normally positioned while avoiding rotational drug (loss), and obtains high resetting rigidity. A bearing is composed of a stator and a rotor. T...
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JPH09509465A |
A multidimensional interconnection and routing apparatus for a parallel processing computer connects together processing elements in a three-dimensional structure. The interconnection and routing apparatus includes a plurality of process...
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