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JP2003074550A |
To provide a foil gas bearing controlling frictional force by keeping in contact with a rotary shaft and bearing material when an instrument stops and goes, and capable of precisely maintaining a bearing clearance between the rotary shaf...
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JP3385771B2 |
PURPOSE: To reduce change of a load capacity accompanying with change of a bearing clearance, and exhibit stable performance. CONSTITUTION: A permanent magnet unit 16a is constituted by a plurality of annular permanent magnets 17a to 17d...
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JP3382947B2 |
PCT No. PCT/FR95/00231 Sec. 371 Date Aug. 27, 1996 Sec. 102(e) Date Aug. 27, 1996 PCT Filed Feb. 28, 1995 PCT Pub. No. WO95/23297 PCT Pub. Date Aug. 31, 1995An active magnetic bearing with auto position-detection includes first and secon...
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JP2003061298A |
To achieve and provide a hemispherical fluid and gas dynamic pressure bearing motor that is suited for thinning and reduction in current, has a simple structure, and can reduce costs, by solving the problems of realization of stability i...
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JP2003056489A |
To provide a gas circulation fan of an excimer laser device allowing a machine body unit and a controller to be completely compatible with each other. Relays 15 and 16 are installed between magnetic bearings 41 and 42 supporting a spindl...
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JP2003042093A |
To provide a simplified, compact and reliable magnet assembly body for a radial and a thrust bearing of a rotor 14. A first and a second assembly bodies including at least one permanent magnet 42, 44, 48, 50 are arranged with intervals i...
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JP2003503697A |
(57) [Summary] In a method of reducing rolling swing of a rotor (1) mounted so as to float and having a reflective surface (13) on its outer circumference, a measuring beam (5) having a predetermined incident position rotates and passes ...
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JP2003503639A |
A blood pump preferably has a magnetically suspended rotor that rotates within a housing. The rotor may rotate about a stator disposed within the housing. Radial magnetic bearings may be defined within the stator and the rotor in order t...
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JP3370684B2 |
In a flywheel energy accumulator including, in a vacuum-tight housing, a vertical shaft with a rotor of an electric motor/generator arranged in the axial center of the shaft and flywheels mounted on the shaft at opposite sides of the rot...
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JP2003021140A |
To provide stable detection results while providing favorable detection sensitiveness by a simple structure.The control type radial magnetic bearing is comprised so that magnetic flux density by a plurality of electromagnetic poles M1-M1...
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JP2003013957A |
To prevent an occurrence of contamination of a pivot bearing used for a head portion of HDD and also improve a damping effect and mechanical accuracy.The pivot bearing of HDD is characterized to fit a magnet 2 on the periphery of the piv...
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JP2003013955A |
To provide a stator core of a magnetic bearing having a better yield rate of material and facilitating highly accurate processing and also having a structure that has less chance of eddy current.Instead of a stator core of a magnetic bea...
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JP2002364639A |
To improve the rotation stability and reliability of a kinetic pressure gas bearing device. A plate 11 and thrust bearing plates 6 and 7 having kinetic pressure generating grooves 6a and 7a are integrally fixed with permanent magnets 4a,...
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JP3358362B2 |
PURPOSE: To prevent a permanent magnet from being broken by the large centrifugal force generated at the time of high-speed revolutions by providing a holding ring covering the outer peripheries of multiple segments formed into a circula...
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JP2002542554A |
Apparatus and method for improved servo control in a disc drive. The disc drive includes a rotatable disc, a moveable actuator which supports a head adjacent the disc, and a stationary active magnetic bearing assembly which uses bearing ...
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JP2002354767A |
To increase levitation power of a rotor. A magnetic levitation motor 1 for rotating the rotor 3 in a levitated state relative to a fixed stator 2 is provided with a DC magnetic field generating means 4 for forming a radial magnetic flux ...
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JP3352749B2 |
A pot spinning device is disclosed for spinning textile yarn in which the spinning pot has an inner wall and the pot is driven by a magnetic bearing device for rotating the spinning pot. The magnetic bearing device provides radial and ax...
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JP3349329B2 |
To perform stable floating and high-speed rotation by forming a rotary ring to be filament winding type FRP and connecting one pole of a divided type permanent magnet having difference poles to a magnetic iron plate. Circumferential dire...
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JP3350310B2 |
A control system for controlling a linear actuator including magnetic bearings for levitating a robot arm and a pulse motor for linearly driving the arm in a non-contact manner is disclosed, which comprises a displacement detection unit ...
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JP3349679B2 |
To facilitate the fabrication work of a stator column assembly and improve full and wise use of resources, as well as to prevent contact accident between a mold portion of a stator column and a rotor shaft due to the thermal inflation. A...
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JP3348038B2 |
To reduce the rotation loss and improve the fixing force by constituting a rotor by use of a high-temperature superconductive magnet formed of a high-temperature superconductive film, and using a cylindrical stator superconductor consist...
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JP2002331932A |
To provide the invention for solving the problem that a bearing in a bearing box supporting car weight causes breaking, destruction, and a cavitation phenomenon, and a substance melting a metal with a cause unknown is secreted from oil i...
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JP2002330569A |
To provide a spindle motor which significantly improves the non- repetitive run-out(NRRO), even if it is in a high-speed revolving condition.The spindle motor BB, which has a shaft 4 tightly fixed to the revolving center of a rotor hub 1...
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JP2002317340A |
To uniformly heat a godet casing without considerably hampering a magnetic bearing of the godet casing.This godet is obtained by arranging at least one of heating pole windings 30 between bearing pole windings 10 of a bearing plane 14 in...
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JP2002307254A |
To provide a linear guide device having a long lifetime of running, consisting of a guide rail having a rolling groove for a rolling element and a slider fitted loosely on it and to make relative movement in the axial direction through r...
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JP3333739B2 |
To maximize the dynamic responsiveness of a control system for a magnetic bearing furnished with a trouble permissive function. A main digital signal processor 25 to feed a control signal to a bearing control coil by responding to a roto...
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JP2002295398A |
To provide a device and a method for protecting a turbo molecular pump capable of taking countermeasures according to the kind of an abnormality when an abnormal situation occurs.When an abnormal situation such as abrupt entry of the out...
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JP2002291199A |
To provide a spindle motor having magnetic and fluid bearings.The spindle motor used in precision equipment such as a hard disk drive includes a stationary sub-assembly, and a rotary sub-assembly that can move to the stationary sub-assem...
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JP2002286045A |
To provide a revolving bearing protection device capable of relatively reducing repair cost of equipment and using a revolving bearing for a usual rated load.The revolving bearing protection device in which a revolving bearing 7 is inter...
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JP3328073B2 |
PURPOSE: To achieve a stable use by effectively suppressing the swing of a shaft from a low-frequency region to a high-frequency region without losing stiffness and damping characteristics by covering an entire surface of oxide supercond...
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JP2002266861A |
To reduce abrasion in a thrust dynamic pressure bearing part by easily generating a sufficient dynamic pressure needed in the thrust dynamic pressure bearing part.A depth of a dynamic pressure generating groove in a thrust bearing part S...
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JP3324319B2 |
PURPOSE: To ensure a large load capacity, and enable stable operation. CONSTITUTION: A superconductive magnet bearings 23, 23 and a passive type magnet bearing 24 are arranged between a flange 15 fixed to a rotary shaft 2 and a bearing h...
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JP2002528342A |
A torque/reactive momentum wheel control system for use in satellites for dynamic attitude maintenance and alteration where the flywheel of each momentum wheel is levitated by a high-temperature superconducting element repulsively intera...
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JP2002247823A |
To eliminate requirement for high speed operation of a drive amplifier of simplified structure without any influence on either the magnetic levitation force control or rotating torque control by the other control, and moreover by reducin...
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JP2002242876A |
To provide a magnetic bearing type pump to restrain generation of an eddy current on a shaft, to minimize heating of the shaft and to improve in efficiency.An electromagnetic target to constitute a target of an electromagnet to constitut...
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JP2002527688A |
In a magnetic bearing in which a first part (1, 20) is mounted magnetically relative to a second part (3, 10) and the second part (3, 10) has a Type II superconducting material (2) containing an anisotropic crystal or a plurality of grai...
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JP3319030B2 |
PURPOSE: To relieve the burden in a high frequency area of a power amplifier through prevention of the generation of noise owing to run out without complicating constitution of a rotation system by providing a simulation circuit to estim...
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JP3315428B2 |
A radial magnetic bearing apparatus suspends a rotating shaft and stably operates at a level exceeding a bending intrinsic vibration value of the rotating shaft by controlling magnetic forces generated by control coils wound around contr...
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JP2002220179A |
To provide a door suspension system that can be easily and inexpensively manufactured and easily and quickly installed.A connector 9 has a substantially C-shaped profile enclosing a flat plate 3 and a rail 4. The connector 9 is mounted w...
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JP2002523692A |
A tilting pad journal bearing (2) comprises a bearing shell (4) having a substantially cylindrical inner surface and at least three bearing pads (5, 6, 7) extending around the inner surface of the bearing shell in a substantially circumf...
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JP3306933B2 |
PURPOSE: To reduce vibration during rotation and bearing damage at the time of starting stop by making the support position of the hollow rotary body of a thrust magnetic bearing coincide with a balance point where pressure moments gener...
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JP3306940B2 |
PURPOSE: To provide a composite bearing structure capable of withstanding high revolution with high accuracy by providing a bearing means to support the impact in the radial direction, a bearing means to support the load in the axial dir...
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JP2002195281A |
To provide a support structure of a rotating shaft capable of reducing a load or impact to be borne by a bearing for rotatably supporting a shaft even in the case where a support structure is used for such an application that the bearing...
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JP3297440B2 |
The invention concerns a process for producing optimized melt-textured volume samples based on the high temperature superconductor YBa2Cu3O7 (YBCO) for use in contact-free self-stabilizing magnetic bearings. The object of the invention i...
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JP3296074B2 |
PURPOSE: To provide a control device for a magnetic bearing applying an optimum gain to each third/fourth hazardous speed mode of a rotor, to realize an ideal damping effect. CONSTITUTION: A component of rotational speed synchronous forw...
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JP3294178B2 |
To increase a pressure generation rate of oil and to improve a high velocity dynamic characteristic, by providing an electromagnetic force generating means generating definite pressure in a fluid between a shaft and an inner wall, and by...
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JP2002517688A |
The invention relates to a magnetic bearing cell (1) comprising rotating bearing parts having at least two disks which are fixed on a shaft and each provided with one ring-shaped permanent magnet (5, 6, 7), as well as fixed bearing parts...
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JP3292714B2 |
To effectively suppress the whirling of a shaft body with a simple structure. This device comprises an annular suppression part 1 having an outer circumferential surface and a hole for forming an inner circumferential surface, at least o...
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JP2002516056A |
The invention concerns a drive system with a drive motor (1), especially the internal combustion engine of a motor vehicle, an electric machine (4), which provides additional driving action, and at least one short-duty battery (11), whic...
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JP2002515958A |
The invention concerns a drive system with a drive motor (1), especially the internal combustion engine of a motor vehicle, an electric machine (4), which provides additional driving action, and at least one short-duty battery (11), whic...
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