公开(公告)号：US3917926A

公开(公告)日：1975-11-04

申请号：US423870

申请日：1970-01-20

Applicant: THOMSON CSF

Inventor： GERARD ANDRE ,  LACOMBAT MICHEL

IPC: G01D5/38 ,  G01D5/26 ,  G08C25/00 ,  H03K5/26 ,  H04L3/00 ,  G06F7/38 ,  G06G7/00

CPC classification number: H03K5/26

Abstract: At least two phase shifted signals are obtained from electrical sensors as interference fringes pass over the sensors, so that the signals will vary as a function of the movement of the fringes in the interferometer; the signals are applied to n similar channels, for example two, where they are converted into positive and negative going pulses each time when the signals pass a threshold value, for example by a threshold circuit, a differentiator, and a polarity separating circuit such as backto-back diodes; the pulses are then applied to a logic circuit having separate inputs for the two signals from each channel which decodes, from the sequence of the pulses, the number of fringes and the direction of passage of the fringes, to control a bi-directional counter (directly, or by setting a flip flop determining the direction of count). The threshold detector may be a trigger circuit changing state whenever a predetermined level is passed, so that minor vibrations and noise signals remain undetected.

Abstract translation: 当干涉条纹通过传感器时，从电传感器获得至少两个相移信号，使得信号将随着干涉仪中边缘移动的变化而变化; 信号被施加到n个相似的通道，例如两个，其中它们每当信号通过阈值时被转换成正和负脉冲，例如通过阈值电路，微分器和极性分离电路，例如 背对背二极管; 然后将脉冲施加到具有来自每个通道的两个信号的分离输入的逻辑电路，该信号从脉冲序列中解码条纹的数量和条纹的通过方向，以控制双向计数器（ 直接或通过设置触发器来确定计数的方向）。 阈值检测器可以是每当通过预定电平时触发电路改变状态，使得小的振动和噪声信号保持不被检测。

公开(公告)号：US3692413A

公开(公告)日：1972-09-19

申请号：US3692413D

申请日：1970-11-18

Applicant: THOMSON CSF

Inventor： MARCY RAYMOND ,  BOUYGUES JEAN ,  LACOMBAT MICHEL

IPC: G01B9/02 ,  G03F7/20 ,  C01B11/26 ,  B26D7/16

CPC classification number: G03F7/70716 ,  G01B9/02019 ,  G01B9/02021 ,  G01B9/02027 ,  Y10T83/889

Abstract: The invention relates to a system for displacing an object supported on a carriage sliding above a bench, in such manner as to follow accurately a rectilinear trajectory. The lateral and rotational deviations of the object from the ideal trajectory are sensed by means of interferometer optical means which control a plurality of electromechanical transducers for cancelling out said deviations.

Abstract translation: 本发明涉及一种用于使支撑在滑板上方的滑架上的物体移动的系统，以便精确地遵循直线轨迹。 通过干涉仪光学装置来感测物体与理想轨迹的横向和旋转偏差，该干涉仪光学装置控制多个机电换能器以消除所述偏差。