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    • 1. 发明授权
    • Magnetic bearing controller
    • 磁轴承控制器
    • US5760511A
    • 1998-06-02
    • US804688
    • 1997-02-25
    • Tohru NakagawaIsao TashiroYoshihiro Ikemoto
    • Tohru NakagawaIsao TashiroYoshihiro Ikemoto
    • F16C32/04B60L13/06F16C39/06G05B5/01
    • F16C32/0451
    • A second circuit B which is composed of a band-pass filter circuit (5) which takes out a rotating body position signal input from a sensor (1) while scarcely varying a phase within a range including a normal rotation frequency and a reverse rotation frequency of a rotating body, a gain circuit (6) for controlling a gain of an output signal from the bandpass filter circuit (5) and a second notch filter circuit (7) for attenuating components having frequencies lower than the natural frequency of an output signal from a gain circuit (6) is disposed separately from a main circuit A, and an output signal from the second notch filter circuit (7) is positively fed back to the main circuit A through an adding circuit (8). This composition makes it possible to obtain a magnetic bearing which is capable of sufficiently attenuating a bending natural frequency of a high-speed rotating body and supporting this rotating body with high rigidity even when a normal rotation frequency and a reverse rotation frequency of the high-speed rotating body vary.
    • 第二电路B,其由带通滤波器电路(5)组成,带通滤波器电路(5)从传感器(1)输入的旋转体位置信号,几乎不改变包括正常旋转频率和反向旋转频率的范围内的相位 旋转体,用于控制来自带通滤波器电路(5)的输出信号的增益的增益电路(6)和用于衰减频率低于输出信号的固有频率的分量的第二陷波滤波器电路(7) 来自增益电路(6)与主电路A分开配置,并且来自第二陷波滤波器电路(7)的输出信号通过加法电路(8)被正确反馈回主电路A. 该组合物可以获得能够充分地衰减高速旋转体的弯曲固有频率并且以高刚性支撑该旋转体的磁轴承,即使在高速旋转体的正常旋转频率和反向旋转频率下, 速度旋转体不同。
    • 2. 发明授权
    • Manufacturing method for magnetic bearing system
    • 磁性轴承系统的制造方法
    • US5924186A
    • 1999-07-20
    • US805746
    • 1997-02-25
    • Tohru NakagawaKatsuhiko AsaiYoshihiro IkemotoIsao Tashiro
    • Tohru NakagawaKatsuhiko AsaiYoshihiro IkemotoIsao Tashiro
    • F16C32/04F16C39/06H02K7/09H02K15/00
    • H02K7/09F16C32/0444F16C32/0461F16C32/0465F16C32/048F16C43/00F16C2322/39Y10T29/49009Y10T29/4902
    • A radial electromagnetic attraction stator of a magnetic bearing system is manufactured by forming laminated core pieces as divisions of a laminated core each having a unit number of pole teeth, winding wires around pole piece portions of the laminated core pieces with insulators interposed, assembling a predetermined number of the laminated core pieces wound with the wires and fixing joined portions of the laminated core pieces. This manufacturing method prevents spaces in which the wires are wound from being limited by adjacent pole teeth unlike the conventional integral laminated core, permits winding the wires in a maximum number of turns in open spaces and allows to obtain the radial electromagnetic attraction stator having a high space factor, thereby being capable of providing a magnetic bearing system having a high load capacity and usable as a bearing capable of enhancing performance of production appliances such as working appliance and vacuum pumps.
    • 磁性轴承系统的径向电磁吸引定子是通过将叠层铁心片形成为分别具有单个齿数的层叠铁心的叠层铁心片,将绝缘体插入在叠层铁心片的极片部分周围的绕组线,组装预定的 卷绕在芯线上的层叠芯片的数量和层叠铁心片的固定接合部分。 这种制造方法防止线缠绕的空间受到相邻极齿的限制,这与传统的一体式叠层铁芯不同,允许在开放空间中以最大匝数缠绕线,并且允许获得具有高的线的径向电磁吸引定子 从而能够提供具有高负载能力的磁轴承系统,并且可用作能够提高诸如工作设备和真空泵的生产设备的性能的轴承。
    • 5. 发明授权
    • Processing apparatus with movable processing tool and processing method
    • 具有可移动加工工具的加工设备及加工方法
    • US5735028A
    • 1998-04-07
    • US594784
    • 1996-01-31
    • Yoshinori FurusawaYoshihiro IkemotoTutomu HamadaHiroyuki Funasho
    • Yoshinori FurusawaYoshihiro IkemotoTutomu HamadaHiroyuki Funasho
    • G05B19/404B23B7/14B23C3/00B24B49/00G05B19/00
    • G05B19/404G05B2219/36471G05B2219/37339G05B2219/41344G05B2219/49177Y10T29/5109Y10T409/305712Y10T82/10Y10T82/2502Y10T82/2533
    • A processing apparatus with a movable processing tool, which includes a position detecting sensor for detecting a rotary position of a to-be-processed object held by a holding member set to a rotary main shaft, a deflection detecting sensor for detecting an amount of rotational deflection of a processing reference surface of the object, a waveform shaping device for shaping an output signal from the deflection detecting sensor into a waveform approximate to a sine curve, an operational device for operating a positional correction amount for a processing tool at a processing point of the object on a basis of an output signal of the waveform shaping device synchronously with rotation of the rotary main shaft, an output device for outputting the positional correction amount for every rotary position and every processing point based on an output signal from the operational device, a fine adjustment mechanism for minutely driving the processing tool based on an output signal from the output device, and an NC table moving in two dimensions the fine adjustment mechanism to process the object by the processing tool.
    • 一种具有可移动处理工具的处理装置,包括用于检测由设置在旋转主轴上的保持部件保持的被处理物体的旋转位置的位置检测传感器,用于检测转动量的偏转检测传感器 物体的处理参考表面的偏转,用于将来自偏转检测传感器的输出信号成形为接近正弦曲线的波形的波形整形装置,用于在处理点处操作处理工具的位置校正量的操作装置 基于与旋转主轴的旋转同步的波形整形装置的输出信号的输出装置,输出装置,用于根据来自操作装置的输出信号输出每个旋转位置和每个处理点的位置校正量 基于来自输出的输出信号精细地驱动处理工具的微调机构 装置和NC工作台两维移动的微调机构通过处理工具处理对象。
    • 6. 发明授权
    • Fluid rotating apparatus with plural drive motor synchronization system
    • 具有多个驱动电动机同步系统的流体旋转装置
    • US5348448A
    • 1994-09-20
    • US33755
    • 1993-03-18
    • Yoshihiro IkemotoTeruo Maruyama
    • Yoshihiro IkemotoTeruo Maruyama
    • F04C2/00F04C18/16F04C25/02F04C28/06F04C29/00F04B49/00H02P5/46
    • F04C29/0085
    • A fluid rotating apparatus includes non-circular rotors accommodated in a housing, rotary shafts having the rotors, bearings for rotatably supporting the shafts, a fluid suction and a fluid discharge ports formed in the housing, a positive displacement pump section formed of combination of the housing and rotors, and gears connected with the shafts having backlash set smaller than backlash between the rotors. The apparatus includes motors for independently driving the shafts, a device for detecting a rotating angle or speed of rotation of the motors, a unit for controlling the motors to synchronously rotate, a unit for detecting a current running in the motors, a unit for detecting a relative position of the shafts, and a rotation commanding unit, to which outputs from the motor current detecting unit and relative position detecting unit are inputted, for deciding whether or not a shift amount of the synchronous rotation is larger than a specified value based on the outputs of the motor current detecting unit and/or the relative position detecting unit, and outputting to the motor controlling unit a signal to decelerate one shaft when the rotation command unit decides that the shift amount of the synchronous rotation is larger than the value.
    • 流体旋转装置包括容纳在壳体中的非圆形转子,具有转子的旋转轴,用于可旋转地支撑轴的轴承,形成在壳体中的流体抽吸和流体排出口,由位移泵 外壳和转子,以及与具有小于转子之间的间隙的间隙的轴连接的齿轮。 该装置包括用于独立驱动轴的马达,用于检测马达的旋转角度或转速的装置,用于控制马达同步旋转的单元,用于检测马达中运行的电流的单元,用于检测马达的电流的单元 轴的相对位置和旋转指令单元,来自电动机电流检测单元和相对位置检测单元的输出被输入到其中,用于基于以下方式来决定同步旋转的偏移量是否大于指定值 马达电流检测单元和/或相对位置检测单元的输出,并且当旋转指令单元判定同步旋转的移动量大于该值时,向马达控制单元输出用于减速一个轴的信号。