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    • 5. 发明公开
    • Voltage-current probe with high matching directivity
    • 电压电流探头具有高适应性的指向
    • EP0939428A3
    • 2002-10-23
    • EP99301185.7
    • 1999-02-17
    • Eni Technologies, Inc.
    • Gerrish, Kevin Sean
    • H01J37/32H05H1/00
    • H01J37/32082H01J37/32935H01J37/3299
    • A technique for measuring the current, voltage and phase of an RF power wave to an RF load (20) accounts for the finite length of the voltage and current pickups (42, 52) and corrects for effects of standing wave components of voltage and current. Voltage and current are computed as complex functions of the voltage pickup signal V v and the current pickup signal V i based on coefficients precalibrated for said predetermined radio frequency. Alternatively, a corrected current value can based on the corrected voltage value and complex load impedance. The correction coefficients can be obtained, for each of a plurality of calibrating radio frequencies within an RF range, from voltage and current pickup signals under conditions of (a) open circuit load, (b) short circuit load, (c) fixed known impedance load; and (d) one of voltage and current being applied at a precise input level to a known load from an RF calibration source. The voltage and current probe (22) can comprise a metal housing (30) having a cylindrical bore (32) therethrough, and first and second recesses (34, 36) a center conductor (A) and cylindrical insulator (B) within said bore (32) and voltage and current sensor boards (45, 55) mounted in the recesses (34, 36).
    • 7. 发明公开
    • Fiber optic position sensor for tuning capacitor
    • 光纤位置传感器
    • EP0935124A3
    • 2001-09-12
    • EP99300860.6
    • 1999-02-05
    • Eni Technologies, Inc.
    • Church, Richard E.
    • G01D5/34
    • G01D5/34
    • An optical position sensor for a vacuum tuning capacitor employs optic fibers (31, 32) that are positioned adjacent a nut (20) associated with the guide shaft (16). A threaded lead screw (21) is rotated to lift the nut and move the capacitor from a fully-withdrawn home position to a tuning position. A first fiber (31) has its terminus aligned with the terminus of a second fiber (32) to define a gap. A flag or shutter (37) on the nut is positioned in the gap to block the light path between the fibers when the nut is in the home position, but is out of the gap to allow passage of light otherwise. This produces normally-on signaling, giving the position sensor a fail-safe capability. The sensor can be incorporated into a cap or cover (22) of the tuning capacitor.
    • 用于真空调谐电容器的光学位置传感器使用邻近与导向轴(16)相关联的螺母(20)定位的光纤(31,32)。 旋转螺纹导螺杆(21)以提升螺母并将电容器从完全撤回的原始位置移动到调谐位置。 第一纤维(31)的末端与第二纤维(32)的末端对齐以限定间隙。 螺母上的标志或挡板(37)位于间隙中,以在螺母处于原始位置时阻挡光纤之间的光路,但是在间隙之外以允许光否通过。 这产生正常信号,给位置传感器提供故障安全功能。 传感器可以结合到调谐电容器的盖或盖(22)中。
    • 8. 发明公开
    • Plasma process control system comprising a programmable process controller and an external computer for downloading a control program to the process controller
    • 具有可编程过程控制器和一个外部计算机,以在所述控制器发送的控制程序等离子体工艺控制系统
    • EP0911863A2
    • 1999-04-28
    • EP98306325.6
    • 1998-08-07
    • Eni Technologies, Inc.
    • Vona, Daniel F.Gerrish, Kevin S.Nasman, Kevin P.
    • H01J37/32
    • H01J37/32935H01J37/32963H01J37/3299
    • Plasma process control arrangement controls a plasma generator (12) that provides electrical power to a plasma chamber (18) for an RF or DC plasma process. A sensor system (16) detects operating parameters of the electrical power, including voltage and current levels. A process detection system(PDS)controller (26) has inputs coupled to the sensor system (16) to receive the operating parameters, a programmable memory unit (30) for storing a control program to compute an output control signal based on said operating parameters, and a control output coupled to a control input of the plasma generator. An external computer device (42), includes a monitor (46), an icon copying device, e.g., a mouse (50) suitable for drag-and-drop operation, and a memory storing a suitable code-building program (44) for generating a user-selected control program according to user-determined process requirements. Respective graphical icons are presented on the monitor and are selected and connected by use of the icon copying device to represent logic processing of the operational parameters, and the external computer device (42) creates the corresponding user-selected control program. The user-selected control program is downloaded from the external computer device to the programmable memory (30) of the pds controller (26), e.g., using standard connectors and cables.
    • 等离子体工艺控制装置,控制等离子体发生器(12)没有电功率提供给等离子体室(18),用于在RF或DC等离子处理。 的传感器系统(16)检测的电功率,包括电压和电流水平的操作参数。 的方法检测系统(PDS)控制器(26)具有用于存储控制程序,以计算基于所述工作参数输出控制信号耦合到所述传感器系统(16)以接收所述操作参数,可编程存储器单元(30)输入 和控制输出端耦合到等离子体发生器的控制输入端。 外部计算机装置(42)包括用于在监视器(46),图标拷贝装置,例如,鼠标(50)适于拖动和放下操作,和一个存储器,其存储一个合适的编码建设方案(44) 产生用户选择的控制程序gemäß到用户确定的工艺要求。 相应的图形图标被呈现在监视器上并且被选择并连接通过使用图标复印设备的代表操作参数的逻辑处理,和外部计算机装置(42)创建对应的用户选择的控制程序。 用户选择的控制程序从外部计算机装置下载到PDS控制器(26),E G的可编程存储器(30),使用标准的连接器和电缆。