公开(公告)号：US4688989A

公开(公告)日：1987-08-25

申请号：US647150

申请日：1984-09-05

申请人： Hideki Kondo ,  Noburu Shimizu ,  Yoichi Kanemitsu

发明人： Hideki Kondo ,  Noburu Shimizu ,  Yoichi Kanemitsu

IPC分类号： F04D25/02 ,  F04D29/04 ,  F04D29/051 ,  F04D29/059 ,  F16C27/00 ,  F16C27/04 ,  F01D15/12

CPC分类号： F04D29/0513 ,  F04D25/02 ,  F04D29/059 ,  F04D29/668 ,  F16C27/04

摘要： A gas rotary machine of a type which is driven by a driving system with two parallel axes wherein a pinion shaft supporting a pinion is made as a flexible shaft and damper bearings including ball/roller bearings are employed to support the flexible shaft so that the whole machine is kept compact and the power required therefor is reduced.

摘要翻译： PCT No.PCT / JP84 / 00335 Sec。 371日期1984年9月5日第 102（e）1984年9月5日PCT PCT。1984年6月29日PCT公布。 公开号WO85 / 01328 日期：1985年3月28日。一种由具有两个平行轴线的驱动系统驱动的气体旋转机械，其中支撑小齿轮的小齿轮轴被制成柔性轴，并且采用包括滚珠/滚子轴承的阻尼器轴承来支撑 柔性轴使得整个机器保持紧凑并且所需的功率减小。

公开(公告)号：US5194805A

公开(公告)日：1993-03-16

申请号：US633849

申请日：1990-12-26

申请人： Atsushi Nakajima ,  Minoru Takizawa ,  Chikara Murakami ,  Yoichi Kanemitsu ,  Yuji Shirao

发明人： Atsushi Nakajima ,  Minoru Takizawa ,  Chikara Murakami ,  Yoichi Kanemitsu ,  Yuji Shirao

IPC分类号： G01D5/22

CPC分类号： G01D5/2208

摘要： An inductance-type displacement sensor which can measure the displacement of a measured object of magnetic material without any contact with the object. A pair of series connected coils is provided adjacent to the object so that the inductance of the coils varies in response to a displacement of the object from a predetermined position. The inductance, the number of windings, the direction of the windings and the section of each of the cores are so set that the magnetic flux produced by one of the coils runs in a direction opposite to that of the magnetic flux produced by the other coil and the densities of the respective magnetic fluxes are identical with each other.

公开(公告)号：US4942321A

公开(公告)日：1990-07-17

申请号：US253516

申请日：1988-10-05

申请人： Yoichi Kanemitsu

发明人： Yoichi Kanemitsu

IPC分类号： H02K7/09 ,  F16C32/04 ,  F16C39/06

CPC分类号： F16C32/0451 ,  F16C32/0482 ,  F16C32/0489 ,  F16C2322/39

摘要： A radial magnetic bearing system for use in turbomachinery, machine tools and so forth is disclosed. A rotary yoke made of a magnetic material is rigidly secured to a rotary shaft, and an electromagnet stator is rigidly secured to a casing. The stator is arranged to generate magnetic attraction forces radially at equi-angular spacings of 120.degree. within a plane perpendicular to the axis of the rotary shaft. Three displacement sensors are arranged such that each sensor measures displacement of the rotary shaft with respect to the casing in the direction of one of the three magnetic attraction forces, thus controlling the level of each magnetic attraction force.

公开(公告)号：US5641054A

公开(公告)日：1997-06-24

申请号：US362451

申请日：1995-03-07

申请人： Satoshi Mori ,  Masao Matsumura ,  Yoichi Kanemitsu ,  Takeshi Yoshioka ,  Masaaki Kajiyama ,  Fumio Kondo ,  Yuji Shirao ,  Masato Eguchi ,  Hiroyuki Shinozaki ,  Yukio Ikeda ,  Masayoshi Hirose ,  Masaru Nakaniwa ,  Norio Kimura ,  Katsuaki Usui ,  Katsuyuki Aoki

发明人： Satoshi Mori ,  Masao Matsumura ,  Yoichi Kanemitsu ,  Takeshi Yoshioka ,  Masaaki Kajiyama ,  Fumio Kondo ,  Yuji Shirao ,  Masato Eguchi ,  Hiroyuki Shinozaki ,  Yukio Ikeda ,  Masayoshi Hirose ,  Masaru Nakaniwa ,  Norio Kimura ,  Katsuaki Usui ,  Katsuyuki Aoki

IPC分类号： H01L21/00 ,  H01L21/677 ,  B65G35/00

CPC分类号： H01L21/67167 ,  H01L21/67184 ,  H01L21/67709 ,  H01L21/67736

摘要： A magnetic levitation conveyor apparatus has levitation electromagnets, linear motors, and displacement sensors which are disposed outside of a tunnel, and a carriage of simple structure which is movable in the tunnel. The carriage is of canned structure for preventing gases from being generated. The carriage of canned structure allows the tunnel to have a reduced cross-sectional area and to be filled with a highly purified atmosphere such as of a high vacuum. The tunnel has substantially orthogonal branches at a branched point. In the branched point, the carriage can move, while being lifted out of contact with the tunnel partition, with a directional change from a main conveyor passage into a branched conveyor passage. The magnetic levitation conveyor apparatus is highly practical as it can control the carriage to be lifted and moved as described above.

摘要翻译： PCT No.PCT / JP93 / 00930 Sec。 371日期：1995年3月7日 102（e）1995年3月7日PCT PCT 1993年7月6日PCT公布。 第WO94 / 01354号公报 日期1994年1月20日磁悬浮输送装置具有设置在隧道外部的悬浮电磁体，线性电动机和位移传感器，以及可在隧道中移动的简单结构的滑架。 滑架是用于防止产生气体的罐头结构。 罐头结构的支架允许隧道具有减小的横截面积，并且填充有高度净化的气氛，例如高真空。 隧道在分支点处具有大致正交的分支。 在分支点，托架可以在与主输送机通道分支输送通道的方向改变的同时被提升而不与隧道隔板接触。 磁悬浮输送装置是高度实用的，因为它可以如上所述地控制滑架被提升和移动。

公开(公告)号：US5152679A

公开(公告)日：1992-10-06

申请号：US740779

申请日：1991-08-06

申请人： Yoichi Kanemitsu ,  Yuji Shirao

发明人： Yoichi Kanemitsu ,  Yuji Shirao

IPC分类号： F04D19/04 ,  F04D29/048 ,  F04D29/056 ,  F16C32/04 ,  F16C39/02 ,  F16C39/06 ,  H02K7/09

CPC分类号： F04D19/048 ,  F16C32/0425 ,  F16C32/0442 ,  F16C32/0478 ,  F16C39/063 ,  H02K7/09 ,  F16C2360/45 ,  F16C39/02

摘要： A turbo molecular pump includes a magnetic bearing system which includes a rotor having an impeller connected to a shaft and a motor. A stator is positioned between the shaft and the impeller. Radial magnetic bearings, an active axial magnetic bearing and emergency bearings are each provided between the rotor and the stator. The radial magnetic bearings include passive magnetic bearings provided on the rotor and the stator respectively. The axial magnet bearing is disposed in the vicinity where the impeller is connected to the shaft. The emergency bearings are disposed on a low vacuum side with one emergency bearing being positioned near the axial magnetic bearing. A diameter of the shaft is made smaller than an inside diameter of the emergency bearing near the axial magnetic bearing. By this arrangement, only one control axis is necessary for controlling the position of the rotor. Disassembling of the shaft and impeller is easy and contamination of the high vacuum side can be prevented.

公开(公告)号：US5130589A

公开(公告)日：1992-07-14

申请号：US667895

申请日：1991-03-12

申请人： Yoichi Kanemitsu

发明人： Yoichi Kanemitsu

IPC分类号： H02K7/04 ,  F16C39/06 ,  H02K7/09 ,  H02K11/00 ,  H02K15/16

CPC分类号： F16C32/0451 ,  H02K15/165 ,  H02K7/09

摘要： An apparatus for correcting imbalance of a rotor suspended by a magnetic bearing system including a displacement sensor for detecting a displacement of the rotor. An imbalance correcting circuit applies a trial imbalance correcting signal to the magnetic bearing system. A command computer applies an amount of correction to the imbalance correcting circuit and calculates an influence factor of the imbalance correcting signal on the basis of outputs from the displacement sensor before and after the imbalance correcting signal is applied to the magnetic bearing system, so as to cause the imbalance correcting circuit to apply a predetermined imbalance correcting signal produced from the influence factor to the magnetic bearing system, thereby minimizing the output of the displacement sensor to correct mass-imbalance of the rotor.

公开(公告)号：US5127792A

公开(公告)日：1992-07-07

申请号：US676458

申请日：1991-03-26

申请人： Seigo Katsuta ,  Yoichi Kanemitsu ,  Masao Matsumura

发明人： Seigo Katsuta ,  Yoichi Kanemitsu ,  Masao Matsumura

IPC分类号： F04D15/00 ,  F04D29/04 ,  F04D29/048 ,  F04D29/049 ,  F16C39/06

CPC分类号： F04D29/048 ,  F04D29/049 ,  F16C32/0476 ,  F16C2360/42 ,  F16C2360/44

摘要： A cemtrifugal pump in which the thrust generated by an impeller is balanced by the operation of a balancing disc device. In the pump, a magnetic bearing is employed as an axial thrust bearing. The distance between the surface of a balancing disc and an axial displacement detecting surface which, together with the pump shaft, and the distance between such surface of a balancing disc seat is a fixed-side member which faces the balancing disc surface. The surface of a displacement sensor is another fixed-side member which faces the axial displacement detecting surface and are made equal to each other, or the latter distance is made slightly larger than the former distance. The neutral position of the magnetic thrust bearing is made to substantially coincide with the axial position of the rotator of the pump and is determined by the balancing disc device during running of the pump. By these arrangements, the position of the stator is determined by the balancing disc device during normal operation of the pump, whereas the position is determined by the magnetic thrust bearing when the pump is at rest or in a transient running state.

摘要翻译： 一种离心泵，其中由叶轮产生的推力通过平衡盘装置的操作来平衡。 在泵中，使用磁轴承作为轴向推力轴承。 平衡盘的表面与轴向位移检测表面之间的距离，其与泵轴一起以及平衡盘座的这种表面之间的距离是面向平衡盘表面的固定侧构件。 位移传感器的表面是面向轴向位移检测表面并且彼此相等的另一固定侧构件，或者将后一距离略大于前一距离。 磁力推力轴承的中立位置使其基本上与泵的旋转器的轴向位置一致，并且在泵运行期间由平衡盘装置确定。 通过这些布置，定子的位置由泵的正常操作期间的平衡盘装置确定，而当泵处于静止或处于暂时运行状态时，该位置由磁性推力轴承确定。

公开(公告)号：US4879500A

公开(公告)日：1989-11-07

申请号：US286013

申请日：1988-12-19

申请人： Yoichi Kanemitsu

发明人： Yoichi Kanemitsu

IPC分类号： H02K7/09 ,  F16C32/04 ,  F16C39/06

CPC分类号： F16C32/0451 ,  F16C32/0482 ,  F16C32/0489 ,  F16C2322/39

摘要： A controller for a magnetic bearing system which controls the magnetic attraction force acting between a rotor yoke rigidly secured to a rotary shaft and a pair of electromagnet stators rigidly secured to a casing on the basis of a signal output from a displacement sensor which measures relative displacement between the rotary shaft and the casing. The signal output from the displacement sensor is input to a compensation circuit. The signal output from the compensation circuit is input to both the non-inverting input terminal of one operational amplifier and the inverting input terminal of the other operational amplifier. An exciting coil bias voltage is input to the respective inverting input terminals of the two operational amplifiers.