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1. 发明授权

US07046176B2 Rotary encoder 有权
标题翻译：旋转编码器
公开(公告)号：US07046176B2
公开(公告)日：2006-05-16
申请号：US10497589
申请日：2003-04-11
申请人： Takashi Okamuro , Hirokazu Sakuma
发明人： Takashi Okamuro , Hirokazu Sakuma
IPC分类号： H03M1/48
CPC分类号： G01D5/24452 , G01D5/24409 , G01D5/2449 , H03M1/1038 , H03M1/24
摘要： A rotary type encoder is provided with a signal generating portion 2 for generating a sine wave signal of N periods for each revolution in accordance with the rotation of the shaft 4 of a motor; a calculation means for obtaining the rotation angle of the shaft 4 based on the sine wave signal; an EEPROM 37 being arranged in a manner that the error value of the rotation angle for one revolution of the shaft 4 thus measured is divided in relation with the N periods to set a plurality of first angle regions i, the angle region almost at the center of the angle region i is divided into plural regions to set second angle regions j, and an error value corresponding to the angle at almost the center of each of the angle regions j is stored therein in correspondence with the rotation angle; and a correction means for reading the error value stored in the EEPROM 37 in correspondence with the rotation angle to correct the rotation angle.
摘要翻译：旋转型编码器具有信号产生部分2，用于根据电动机的轴4的旋转产生每个旋转的N个周期的正弦波信号; 用于基于正弦波信号获得轴4的旋转角度的计算装置; 以这样的方式布置EEPROM37，使得如此测量的轴4的旋转角度的误差值与N个周期相分离，以设置多个第一角度区域i，几乎处于中心的角度区域角度区域i被分成多个区域以设置第二角度区域j，并且与角度区域j的几乎中心处的角度对应的误差值与旋转角度对应地存储在其中; 以及校正装置，用于根据旋转角读出存储在EEPROM 37中的误差值，以校正旋转角度。

2. 发明授权

US06323786B1 Absolute-value encoder device 有权
标题翻译：绝对值编码器装置
公开(公告)号：US06323786B1
公开(公告)日：2001-11-27
申请号：US09695146
申请日：2000-10-25
申请人： Hirokazu Sakuma , Takashi Okamuro , Yoichi Ohmura , Yukio Aoki , Toshikazu Satone
发明人： Hirokazu Sakuma , Takashi Okamuro , Yoichi Ohmura , Yukio Aoki , Toshikazu Satone
IPC分类号： H03M130
CPC分类号： G01P3/486 , G01P3/489 , G01P13/045
摘要： An absolute-value encoder device for detecting a plurality of rotation quantities is disclosed. An A/B phase forming portion 610 forms an A-phase pulse signal and a B-phase pulse signal, based on light passing through a slit rotating together with a rotary shaft. One period of each of those pulse signals corresponds to one revolution of a rotary shaft. The A- and B-phase pulse signals are displaced in phase by 90° from each other. When an A/B-phase state detecting portion 640 detects a state change of each of those pulse signals, a clock forming portion 66 changes a frequency of a clock pulse signal to another frequency.
摘要翻译：公开了一种用于检测多个旋转量的绝对值编码器装置。基于通过与旋转轴一起旋转的狭缝的光，A / B相形成部分610形成A相脉冲信号和B相脉冲信号。这些脉冲信号中的每一个的一个周期对应于旋转轴的一转。 A相和B相脉冲信号彼此相位90°。当A / B相状态检测部分640检测到这些脉冲信号中的每一个的状态改变时，时钟形成部分66将时钟脉冲信号的频率改变为另一个频率。

3. 发明授权

US06232595B1 Position detecting apparatus 有权
标题翻译：位置检测装置
公开(公告)号：US06232595B1
公开(公告)日：2001-05-15
申请号：US09613312
申请日：2000-07-10
申请人： Takashi Okamuro , Hirokazu Sakuma , Yoichi Ohmura
发明人： Takashi Okamuro , Hirokazu Sakuma , Yoichi Ohmura
IPC分类号： G01D534
CPC分类号： G01D5/24476 , G01D5/24409 , G01D5/2448
摘要： In a position detecting apparatus which detects an absolute position by A/D converting sinusoidal and cosinusoidal signals and performing interpolation, a phase error between the signals which is caused by movement of a detection object during the A/D conversion is corrected, thereby enabling sample hold circuits which have been necessary for maintaining the synchronism of analog signals to be omitted, so as to realize the cost reduction and miniaturization. This is enabled also in an apparatus of high resolution. Position data at requests of the last and preceding times are stored into a RAM 12. On the basis of the position data, a CPU 10 predicts the amount of a phase shift of another signal due to movement during A/D conversion of one signal, corrects the predicted phase shift amount, and then calculates the position data.
摘要翻译：在通过A / D转换正弦和余弦信号来检测绝对位置并进行插值的位置检测装置中，校正在A / D转换期间由检测对象的移动引起的信号之间的相位误差，从而使样本保持模拟信号的同步性所必需的保持电路，从而实现成本的降低和小型化。这也可以在高分辨率的装置中实现。位置数据存储在RAM12中。根据位置数据，CPU10预测由于一个信号的A / D转换期间的移动导致的另一个信号的相移量，校正预测的相移量，然后计算位置数据。

4. 发明申请

US20090259918A1 POSITION DETECTION ERROR CORRECTING METHOD 有权
标题翻译：位置检测错误校正方法
公开(公告)号：US20090259918A1
公开(公告)日：2009-10-15
申请号：US11997947
申请日：2006-11-09
申请人： Hiroshi Sugie , Hirokazu Sakuma , Takashi Okamuro
发明人： Hiroshi Sugie , Hirokazu Sakuma , Takashi Okamuro
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： G01D5/24409 , G01D5/24452 , G01D5/2449
摘要： A position detection error correcting method that corrects position detection errors using a limited storage capacity, by calculating position detection error correction values by four simple arithmetic operations at startup to reduce a startup time delay and consumption of a storage capacity even when a portion containing steep error variations exists. Detection error correction values of a position detector are expressed by a correction function using a periodic function, and correction parameters of the correction values are stored in advance in a non-volatile memory. At startup, these correction parameters are read out, and a position detection error correction value corresponding to each detected position is calculated and stored in a random access memory. The output position detection error correction value detector corresponding to each detected position is read out from the random access memory and a corrected detected position value corrected for the detected position value error is calculated.
摘要翻译：一种位置检测误差校正方法，通过在启动时通过四个简单的算术运算来计算位置检测误差校正值，即使在包含陡峭误差的部分时也减少启动时间延迟和存储容量的消耗，利用有限的存储容量校正位置检测误差存在差异。位置检测器的检测误差校正值由使用周期函数的校正函数表示，校正值的校正参数预先存储在非易失性存储器中。在启动时，读出这些校正参数，并且计算与每个检测位置相对应的位置检测误差校正值并将其存储在随机存取存储器中。从随机存取存储器读出对应于每个检测位置的输出位置检测误差校正值检测器，并且计算针对检测到的位置值误差校正的校正检测位置值。

5. 发明授权

US5677686A Absolute position detection apparatus and error compensation methods therefor 失效
标题翻译：绝对位置检测装置及其误差补偿方法
公开(公告)号：US5677686A
公开(公告)日：1997-10-14
申请号：US379739
申请日：1995-01-27
申请人： Mitsuyasu Kachi , Hirokazu Sakuma , Tsutomu Kazama , Yukio Aoki , Takao Mizutani
发明人： Mitsuyasu Kachi , Hirokazu Sakuma , Tsutomu Kazama , Yukio Aoki , Takao Mizutani
IPC分类号： G01D5/244 , G01D5/245 , H03M1/64 , H03M1/00
CPC分类号： H03M1/645 , G01D5/2451
摘要： An absolute position detection apparatus which comprises sine and cosine wave generators for generating one or more sets of sine and cosine waves within a cycle, analog-to-digital converters for converting the incoming sine and cosine waves generated by the sine and cosine wave generators into digital values. An arithmetic unit is used for calculating a compensation for errors including offset, amplitude and phase errors on the basis of the digital values from the analog-to-digital converters. In the apparatus, the arithmetic unit operates on a phase angle from phase angles found by the arithmetic performed prior to or during said error compensations and the digital values from the analog-to-digital converters, whereby a low-priced, highly reliable absolute position detection apparatus can be achieved without the addition of compensation circuits to the hardware.
摘要翻译：一种绝对位置检测装置，包括用于在一个周期内产生一组或多组正弦波和余弦波的正弦和余弦波发生器，用于将由正弦和余弦波发生器产生的进入正弦和余弦波转换成正弦和余弦波发生器的模数转换器，数字值。算术单元用于根据来自模数转换器的数字值计算包括偏移，幅度和相位误差的误差补偿。在该装置中，运算单元以相位角为基础进行工作，所述相位角由在所述误差补偿之前或期间执行的运算所得到的相位角以及来自模 - 数转换器的数字值进行运算，从而获得低价高可靠绝对位置可以在不向硬件添加补偿电路的情况下实现检测装置。

6. 发明授权

US06956200B2 Phase-shift photoelectric encoder 有权
标题翻译：相移光电编码器
公开(公告)号：US06956200B2
公开(公告)日：2005-10-18
申请号：US10765861
申请日：2004-01-29
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro
IPC分类号： G01D5/347 , H03M1/06 , H03M1/30 , G01D5/34
CPC分类号： H03M1/0678 , G01D5/347 , G01D5/34707 , G01D5/34715 , H03M1/301
摘要： A scale generates a periodic light-intensity distribution pattern having a pitch upon irradiation by emission light from a light source. Light-detecting element groups are shifted relative to the scale to generate phase signals having fixed phase differences. Light-detecting elements are adjacently positioned to have the same phase to form each light-detecting element group. Area centers of gravity on a phase axis of the light-detecting element groups having a fixed phase difference are made coincident with each other.
摘要翻译：刻度产生在从光源发射的光照射时具有间距的周期性光强分布图案。光检测元件组相对于刻度移位以产生具有固定相位差的相位信号。光检测元件被相邻地定位成具有相同的相位以形成每个光检测元件组。使具有固定相位差的光检测元件组的相位轴上的重心面重合。

7. 发明授权

US06351312B1 Interference-type distance measuring device 失效
标题翻译：干涉型距离测量装置
公开(公告)号：US06351312B1
公开(公告)日：2002-02-26
申请号：US09463221
申请日：2000-02-08
申请人： Hirokazu Sakuma , Takashi Okamuro , Yoshimitsu Sato , Toshiro Nakashima , Hajime Nakajima
发明人： Hirokazu Sakuma , Takashi Okamuro , Yoshimitsu Sato , Toshiro Nakashima , Hajime Nakajima
IPC分类号： G01B902
CPC分类号： G01B9/0207 , G01B9/02002 , G01B2290/45
摘要： An interference-type distance measuring device generates a reference beam having a first frequency and detection beam having a second frequency and directs these beams toward a moving detection unit which reflects these beams toward an interference system, where these beams are used to generate a detection interference wave. A reference interference wave generated by the interference system is converted into a first sine-wave signal, the interference detection wave is converted into a second sine-wave signal, first and second cosine-wave signals are generated from the first and second sine-wave signals, and the position of the motion detection unit is detected based upon these four signals.
摘要翻译：干涉型距离测量装置产生具有第一频率的参考光束和具有第二频率的检测光束，并将这些光束引向朝向干涉系统反射这些光束的移动检测单元，其中这些光束用于产生检测干扰波。由干扰系统产生的参考干扰波转换为第一正弦波信号，将干扰检测波转换为第二正弦波信号，从第一和第二正弦波产生第一和第二余弦波信号信号，并且基于这四个信号检测运动检测单元的位置。

8. 发明授权

US5406077A Absolute value encoder and an output correction method of absolute value encoder having a signal processing/control circuit 失效
标题翻译：绝对值编码器和具有信号处理/控制电路的绝对值编码器的输出校正方法
公开(公告)号：US5406077A
公开(公告)日：1995-04-11
申请号：US219467
申请日：1994-03-29
申请人： Yukio Aoki , Takao Mizutani , Tsutomu Kazama , Mitsuyasu Kachi , Tadakatsu Yokoi , Hirokazu Sakuma
发明人： Yukio Aoki , Takao Mizutani , Tsutomu Kazama , Mitsuyasu Kachi , Tadakatsu Yokoi , Hirokazu Sakuma
IPC分类号： G01D5/245 , G01D5/244 , G01D5/249 , G01D5/36 , H03M1/00 , H03M1/10 , H03M1/26 , G01D5/34
CPC分类号： G01D5/24476 , G01D5/2448 , G01D5/2497 , H03M1/002 , H03M1/1019 , H03M1/26
摘要： The position of a machine tool or the like is accurately obtained by an absolute value encoder. Light emission elements emit light which passes through scales containing optical patterns and is detected by light receiving elements. First, a signal detected by the light receiving elements while the light emission elements are extinguished is stored in memory. Then, the light emission elements are lighted and the signal detected by the light receiving elements is corrected by the previously stored signal.
摘要翻译：通过绝对值编码器精确地获得机床等的位置。发光元件发光通过包含光学图案的标尺并被光接收元件检测。首先，在发光元件熄灭时由光接收元件检测到的信号被存储在存储器中。然后，发光元件被点亮，并且由光接收元件检测的信号由先前存储的信号来校正。

9. 发明申请

US20060033643A1 ROTARY ENCODER 有权
标题翻译：旋转编码器
公开(公告)号：US20060033643A1
公开(公告)日：2006-02-16
申请号：US10497589
申请日：2003-04-11
申请人： Takashi Okamuro , Hirokazu Sakuma
发明人： Takashi Okamuro , Hirokazu Sakuma
IPC分类号： H03M1/22
CPC分类号： G01D5/24452 , G01D5/24409 , G01D5/2449 , H03M1/1038 , H03M1/24
摘要： A rotary type encoder is provided with a signal generating portion 2 for generating a sine wave signal of N periods for each revolution in accordance with the rotation of the shaft 4 of a motor; a calculation means for obtaining the rotation angle of the shaft 4 based on the sine wave signal; an EEPROM 37 being arranged in a manner that the error value of the rotation angle for one revolution of the shaft 4 thus measured is divided in relation with the N periods to set a plurality of first angle regions i, the angle region almost at the center of the angle region i is divided into plural regions to set second angle regions j, and an error value corresponding to the angle at almost the center of each of the angle regions j is stored therein in correspondence with the rotation angle; and a correction means for reading the error value stored in the EEPROM 37 in correspondence with the rotation angle to correct the rotation angle.
摘要翻译：旋转型编码器具有信号产生部分2，用于根据电动机的轴4的旋转产生每个旋转的N个周期的正弦波信号; 用于基于正弦波信号获得轴4的旋转角度的计算装置; 以这样的方式布置EEPROM37，使得如此测量的轴4的旋转角度的误差值与N个周期相分离，以设置多个第一角度区域i，几乎处于中心的角度区域角度区域i被分成多个区域以设置第二角度区域j，并且与角度区域j的几乎中心处的角度对应的误差值与旋转角度对应地存储在其中; 以及校正装置，用于根据旋转角读出存储在EEPROM 37中的误差值，以校正旋转角度。

10. 发明授权

US5724035A Method of correcting signals for encoder and apparatus for same 失效
标题翻译：用于编码器和装置的信号校正方法
公开(公告)号：US5724035A
公开(公告)日：1998-03-03
申请号：US719635
申请日：1996-09-25
申请人： Hirokazu Sakuma
发明人： Hirokazu Sakuma
IPC分类号： G01D5/245 , G01D5/244 , G01D5/36 , H03N1/06
CPC分类号： G01D5/24452 , G01D5/2448 , G01D5/2449
摘要： The encoder provided by the present invention computes an obtains a difference value between a maximum value and a minimum value of a simulated sinusoidal signal from the signal detecting section, computes an amplitude of said simulated sinusoidal signal in the amplitude computing section according to the difference value, decides an optimal reference voltage for an A/D converter or an optimal amplification factor and an optimal reference voltage for a signal amplifier for simulated sinusoidal signals, and sets a reference voltage for the A/D converter or an amplification factor and a reference voltage for the signal amplifier according to the optimal values.
摘要翻译：由本发明提供的编码器计算得到来自信号检测部分的模拟正弦信号的最大值和最小值之间的差值，根据差值计算振幅计算部分中的所述模拟正弦信号的振幅为模拟正弦信号决定A / D转换器的最佳参考电压或信号放大器的最佳放大系数和最佳参考电压，并设置A / D转换器的参考电压或放大系数和参考电压对于信号放大器根据最优值。

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