公开(公告)号：US4900962A

公开(公告)日：1990-02-13

申请号：US298644

申请日：1989-01-18

申请人： Richard L. Hockney ,  James R. Downer ,  David B. Eisenhaure ,  Timothy J. Hawkey ,  Bruce G. Johnson

发明人： Richard L. Hockney ,  James R. Downer ,  David B. Eisenhaure ,  Timothy J. Hawkey ,  Bruce G. Johnson

IPC分类号： F16C29/00 ,  F16C39/06

CPC分类号： F16C29/00 ,  F16C32/044 ,  F16C32/0472

摘要： A magnetic bearing system for enabling translational motion includes a carriage and a shaft for movably supporting the carriage; a first magnetic bearing fixed to one of the carriage and shaft and slidably received in a first channel of the other of the carriage and shaft. The first channel is generally "U" shaped with two side walls and a back wall. The magnetic bearing includes a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coils mounted on poles on opposite ends of the pole piece proximate the side walls, and a third electromagnetic coil mounted on a pole of the pole piece proximate the backwall; a motion sensor for sensing translational motion along two axes and rotationally about three axes of the carriage and shaft relative to each other; and a correction circuit responsive to the sensor for generating a correction signal to drive the coils to compensate for any misalignment sensed between the carriage and the shaft.

摘要翻译： 一种用于实现平移运动的磁性轴承系统包括滑架和用于可移动地支承滑架的轴; 固定到滑架和轴之一的第一磁性轴承，并可滑动地容纳在滑架和轴的另一个的第一通道中。 第一通道通常为“U”形，具有两个侧壁和后壁。 磁性轴承包括一对间隔的磁极片，每个极片具有一对电磁线圈，其安装在靠近侧壁的极片的相对端上的极上，以及安装在极片极点上的第三电磁线圈 后墙; 运动传感器，用于感测沿着两个轴的平移运动并且相对于彼此旋转地围绕托架和轴的三个轴线旋转; 以及响应于传感器的校正电路，用于产生校正信号以驱动线圈以补偿在滑架和轴之间感测到的任何未对准。

公开(公告)号：US06900557B1

公开(公告)日：2005-05-31

申请号：US09479982

申请日：2000-01-10

申请人： Marcel P. J. Gaudreau ,  Michael A. Kempkes ,  Timothy J. Hawkey ,  Jeffrey Casey ,  James M. Mulvaney ,  Peter A. Dandrige

发明人： Marcel P. J. Gaudreau ,  Michael A. Kempkes ,  Timothy J. Hawkey ,  Jeffrey Casey ,  James M. Mulvaney ,  Peter A. Dandrige

IPC分类号： H02M1/088 ,  H03K17/0812 ,  H03K17/10 ,  H03K17/691 ,  H01H19/64

CPC分类号： H03K17/691 ,  H02M1/088 ,  H03K17/0812 ,  H03K17/08122 ,  H03K17/08128 ,  H03K17/102 ,  H03K17/107 ,  Y10T307/747

摘要： A compact transformer coupled modulator is described. The modulator includes a transformer comprising a primary and a plurality of secondary windings, where each secondary winding has an output terminal. The modulator also includes a plurality of switches, where each switch is associated with a respective secondary winding and has input and output terminals and a control terminal. The control terminal of each switch is in electrical communication with a respective output terminal of the plurality of secondary windings. Each of the plurality of switches is substantially simultaneously switched by an input signal applied to the primary.

摘要翻译： 描述了紧凑型变压器耦合调制器。 调制器包括一个变压器，包括一个初级和多个次级绕组，其中每个次级绕组都有一个输出端。 调制器还包括多个开关，其中每个开关与相应的次级绕组相关联并且具有输入和输出端子以及控制端子。 每个开关的控制端子与多个次级绕组的相应输出端子电连通。 多个开关中的每一个基本上同时被施加到初级的输入信号切换。