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    • 4. 发明公开
    • Magnetic bearing apparatus
    • Magnetlager
    • EP1176325A3
    • 2004-05-12
    • EP01118169.0
    • 2001-07-26
    • EBARA CORPORATION
    • Shinozaki, Hiroyuki
    • F16C39/06
    • F16C32/0457F16C2360/45
    • There is provided a magnetic bearing apparatus having no necessity of providing a magnetic flux sensor in the vicinity of a supporting electromagnet and no necessity of increasing the number of signal lines in a cable and capable of achieving an advantage similar to a conventional magnet flux feedback type power amplifier in a controller. The magnetic bearing apparatus for supporting a supported member by a magnetic force without contact comprises a current sensor (11) for detecting a control current output from a power amplifier (7) and a displacement sensor (10) for detecting a displacement of the supported member (1). A control current detection signal Si of the current sensor (11) and a displacement detection signal Sg of the displacement sensor (10) are supplied to an estimator (20) that estimates a magnetic flux or magnetic flux density generated between a surface of the electromagnet (4) and an electromagnetic target (3) on the supported member (1). An estimated value is fed back from the estimator (20) to the power amplifier (7) that supplies a control current i to an electromagnetic coil (6).
    • 提供了一种磁性轴承装置,其不需要在支撑电磁体附近提供磁通量传感器,并且不需要增加电缆中的信号线的数量,并且能够实现类似于常规磁通量反馈型的优点 功率放大器在控制器中。 用于通过磁力而不接触地支撑被支撑构件的磁轴承装置包括用于检测从功率放大器(7)输出的控制电流的电流传感器(11)和用于检测被支撑构件的位移的位移传感器(10) (1)。 电流传感器(11)的控制电流检测信号Si和位移传感器(10)的位移检测信号Sg被提供给估计器(20),估计器(20)估计在电磁体表面之间产生的磁通量或磁通密度 (4)和电磁目标(3)。 估计值从估计器(20)反馈到向电磁线圈(6)提供控制电流i的功率放大器(7)。
    • 6. 发明公开
    • Stage device and angle detecting device
    • Trägerplattevorrichtung
    • EP1333468A2
    • 2003-08-06
    • EP03001225.6
    • 2003-01-20
    • EBARA CORPORATION
    • Shinozaki, HiroyukiSobukawa, HirosiYoshikawa, Shoji
    • H01L21/00
    • H01L21/682H01L21/68H01L21/681
    • The present invention provides a stage device applicable to a semiconductor manufacturing apparatus. A stage device 10 comprises a Y-axis stage 20 and an X-axis stage 40, said Y-axis stage 20 including a fixed component 21 and a movable component 26 movable along the Y-axis, said X-axis stage 40 including a fixed component 41 and a movable component 43 movable along the X-axis, wherein the fixed component 41 of the X-axis stage 40 is disposed in the movable component 26 side of the Y-axis stage 20, the Y-axis is designed as a scanning axis, while the X-axis is designed as a stepping axis, and a non-contact sealing device is arranged between the fixed component 21 and the movable component 26 of the Y-axis stage 20.
    • 本发明提供一种适用于半导体制造装置的平台装置。 平台装置10包括Y轴平台20和X轴平台40,所述Y轴平台20包括可沿着Y轴移动的固定部件21和可移动部件26,所述X轴平台40包括 固定部件41和可沿着X轴移动的可动部件43,其中,X轴平台40的固定部件41设置在Y轴台20的可动部件26侧,Y轴被设计为 扫描轴,而X轴被设计为步进轴,并且非接触式密封装置设置在Y轴平台20的固定部件21和可动部件26之间。