公开(公告)号：US20040183701A1

公开(公告)日：2004-09-23

申请号：US10790785

申请日：2004-03-03

Applicant: Harmonic Drive Systems Inc.

Inventor： Muneo Mitamura ,  Yoshinori Ito ,  Sadaharu Kanamori

IPC: H03M001/22 ,  G01D005/34

CPC classification number: H03M1/301 ,  G01D5/34715

Abstract: A projection-type rotary encoder is provided which has a light source, an object grating plate in which a substantially fan-shaped object grating for transmitting light is arranged at constant angular intervals in the circumferential direction, a rotary scale plate in which a substantially fan-shaped scale grating for transmitting light is arranged at constant angular intervals in the circumferential direction, and a photodiode grating plate in which a substantially fan-shaped photodiode photosensitive surface grating is arranged at constant angular intervals in the circumferential direction. A scale grating 32A is formed in the rotary scale plate with a shape and size that correspond to a light image of the object grating 31A incident on the surface thereof. A photodiode photosensitive surface grating 33A is formed in the photodiode grating plate with a shape and size that correspond to a light image of the scale grating 32A incident on the surface thereof.

Abstract translation: 提供一种具有光源的投影式旋转编码器，其中用于透射光的大致扇形物体光栅在圆周方向上以恒定角度间隔布置的物体光栅板，旋转刻度板，其中基本上为风扇 在圆周方向以恒定的角度间隔布置用于透射光的鳞状光栅，以及光电二极管光栅板，其中大致扇形的光电二极管光敏表面光栅在圆周方向上以恒定的角度间隔布置。 刻度光栅32A形成在旋转刻度盘上，其形状和尺寸对应于入射在其表面上的物体光栅31A的光图像。 在光电二极管光栅板中形成光电二极管光敏表面光栅33A，其形状和尺寸对应于入射在其表面上的刻度光栅32A的光图像。

公开(公告)号：US20040262504A1

公开(公告)日：2004-12-30

申请号：US10828184

申请日：2004-04-21

Applicant: Harmonic Drive Systems Inc. ,  Kazuhiro HANE

Inventor： Muneo Mitamura ,  Kazuhiro Hane ,  Yoshinori Ito

IPC: G01D005/34 ,  H01J003/14

CPC classification number: G01D5/34707

Abstract: A projection linear encoder has an SOQ substrate formed with transmission gratings and grid-like photodiode groups, and a reflecting grating plate with reflecting gratings that are formed facing thereto. A light-blocking film composed of a metal thin film or the like is formed on a surface of a glass substrate of the SOQ substrate, and the transmission gratings are formed by patterning the light-blocking film. The photodiodes are integrally formed by epitaxial growth on the silicon layer of the SOQ substrate. Transmission gratings with high mechanical strength can be formed inexpensively in comparison with cases in which through holes are formed by etching a silicon substrate to manufacture transmission gratings.

公开(公告)号：US20040260499A1

公开(公告)日：2004-12-23

申请号：US10819206

申请日：2004-04-07

Applicant: Harmonic Drive Systems Inc.

Inventor： Yoshinori Ito ,  Sadaharu Kanamori ,  Muneo Mitamura

IPC: G01D018/00

CPC classification number: G01D5/24452 ,  G01D5/24409 ,  G01D5/2448 ,  G01D5/2449

Abstract: In an encoder signal interpolation divider (1) that automatically corrects errors in the offset and gain of an input signal at a high speed with a low cost circuit configuration, and can accurately generate an encoder signal having a predetermined resolution by interpolation division, analog input signals (A1, B1) are subjected to offset correction by a 0-point correction circuit (13) in adders (4, 5) prior to being digitally converted by A/D converters (8, 9), and are subjected to gain correction by an amplitude correction circuit (14) in amplifiers (6, 7). The corrected analog signals are converted to digital values, angle data is calculated in an angle data lookup table (10), and, based on these results, an encoder pulse signal having a predetermined resolution is generated and output from an encoder pulse signal generating circuit (12).

Abstract translation: 在编码器信号插值分配器（1）中，以低成本的电路结构自动校正输入信号的偏移和增益的误差，并且可以通过内插分割精确地生成具有预定分辨率的编码器信号，模拟输入 在由A / D转换器（8,9）进行数字转换之前，通过加法器（4,5）中的0点校正电路（13）对信号（A1，B1）进行偏移校正，并进行增益校正 通过放大器（6,7）中的幅度校正电路（14）。 校正的模拟信号被转换为数字值，角度数据在角度数据查找表（10）中计算，并且基于这些结果，生成具有预定分辨率的编码器脉冲信号并从编码器脉冲信号发生电路 （12）。