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1. 发明授权

US06885310B2 Phase difference detection device and method for a position detector 有权
标题翻译：相位差检测装置及位置检测器的方法
公开(公告)号：US06885310B2
公开(公告)日：2005-04-26
申请号：US10379269
申请日：2003-03-03
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
IPC分类号： G01B7/02 , G01D5/22 , H02H1/00 , H04L12/28 , H04L12/56 , H04L29/06 , G08C19/12 , G08C19/06
CPC分类号： G01B7/02 , G01D5/2216 , H02H1/0061 , H04L12/5692 , H04L69/08
摘要： Two A.C. output signals amplitude-modulated in accordance with two function values (sine and cosine) differing from each other in correspondence to a position-to-be-detected are received from a position sensor such as a resolver. By performing an addition or subtraction between a signal derived by shifting the electric phase of one of the received A.C. output signals by a predetermined angle, and the other received signal, two electric A.C. signals (sin(ωt±d+θ), sin((ωt±d−θ)) are electrically synthesized which have electric phase angles (θ) corresponding to the position-to-be-detected and are phase-shifted in opposite directions. “±d” here represents phase variation error caused by factors, other than the position-to-be-detected, such as temperature change. In the synthesized two signals, the phase variation errors (±d) appear in the same direction, while the phase differences (θ) corresponding to the position are shifted in opposite, positive and negative, directions. Thus, by measuring the respective phase shift amounts (±d+θ, ±d−θ) and performing appropriate operation, it is allowed to cancel out or extract the error (±d) so that an accurate phase difference (θ) can be detected. Position detection data indicative of the detected phase difference (θ) is converted into a pulse-width-modulated signal and transmitted in the pulse-width-modulated form.
摘要翻译：从诸如旋转变压器的位置传感器接收根据与待检测位置彼此不同的两个功能值（正弦和余弦）进行幅度调制的两个交流输出信号。通过在所接收的AC输出信号之一的电相位移动预定角度而得到的信号与另一个接收信号之间进行加法或减法，将两个电交流信号（sin（ωg±d + theta），sin（（omega±d-θ））电气合成，其具有与待检测位置相对应的电相角（theta），并且在相反方向上相移。“±d”表示由因子引起的相位变化误差在合成的两个信号中，相位变化误差（±d）出现在相同的方向，而与位置对应的相位差（theta）偏移因此，通过测量各自的相移量（±d +θ，±d-θ）并执行适当的操作，允许其抵消或提取误差（±d），使得精确的相位差（theta）可以被检测。指示检测到的相位差（θ）的位置检测数据被转换成脉冲宽度调制信号，并以脉冲宽度调制形式发送。

2. 发明授权

US6034624A Induction-type linear position detector device 失效
标题翻译：感应式线性位置检测装置
公开(公告)号：US6034624A
公开(公告)日：2000-03-07
申请号：US818974
申请日：1997-03-14
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
IPC分类号： G01B7/02 , G01D5/22 , G08C19/06
CPC分类号： G01B7/02 , G01D5/2216
摘要： A winding section includes a primary winding to be excited by a single-phase A.C. signal, and a plurality of secondary windings provided at different locations with respect to a predetermined direction of linear movement. A variable magnetic coupling section includes a plurality of magnetic response members provided in repetition at a predetermined pitch along the direction of linear movement, and allows inductive A.C. output signals, amplitude-modulated in accordance with a varying linear position of an object of detection, to be produced in the individual secondary windings with amplitude function characteristics differing depending on positional differences between the secondary windings. Each of the inductive A.C. output signals produced in the secondary windings varies in its amplitude function in periodic cycles each corresponding to the pitch length of the magnetic response members. The variable magnetic coupling section may include a core section made of a wire, and the magnetic response members in the form of metal pieces provided at the predetermined pitch and secured by caulking to the core section.
摘要翻译：绕组部分包括由单相交流信号激励的初级绕组，以及设置在相对于线性运动的预定方向的不同位置处的多个次级绕组。可变磁耦合部分包括沿着线性运动方向以预定间距重复设置的多个磁响应部件，并且允许根据检测对象的变化线性位置进行幅度调制的感应AC输出信号在具有根据次级绕组之间的位置差异的幅度函数特性的各个次级绕组中产生。在次级绕组中产生的每个电感式交流输出信号在其振幅函数中以每个对应于磁响应构件的音调长度的周期周期变化。可变磁耦合部分可以包括由导线制成的芯部分和以预定间距设置的金属片形式的磁响应部件，并且通过铆接固定到芯部。

3. 发明授权

US06552666B1 Phase difference detection device and method for a position detector 有权
标题翻译：相位差检测装置及位置检测器的方法
公开(公告)号：US06552666B1
公开(公告)日：2003-04-22
申请号：US09479605
申请日：2000-01-06
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
IPC分类号： G08B2100
CPC分类号： G01B7/02 , G01D5/2216 , H02H1/0061 , H04L12/5692 , H04L69/08
摘要： Two A.C. output signals amplitude-modulated in accordance with two function values (sine and cosine) differing from each other in correspondence to a position-to-be-detected are received from a position sensor such as a resolver. By performing an addition or subtraction between a signal derived by shifting the electric phase of one of the received A.C. output signals by a predetermined angle, and the other received signal, two electric A.C. signals (sin(&ohgr;t±d+&thgr;), sin(&ohgr;t±d−&thgr;)) are electrically synthesized which have electric phase angles (&thgr;) corresponding to the position-to-be-detected and are phase-shifted in opposite directions. “±d” here represents phase variation error caused by factors, other than the position-to-be-detected, such as temperature change. In the synthesized two signals, the phase variation errors (±d) appear in the same direction, while the phase differences (&thgr;) corresponding to the position are shifted in opposite, positive and negative, directions. Thus, by measuring the respective phase shift amounts (±d+&thgr;, ±d−&thgr;) and performing appropriate operation, it is allowed to cancel out or extract the error (±d) so that an accurate phase difference (&thgr;) can be detected. Position detection data indicative of the detected phase difference (&thgr;) is converted into a pulse-width-modulated signal and transmitted in the pulse-width-modulated form.
摘要翻译：从诸如旋转变压器的位置传感器接收根据与待检测位置彼此不同的两个功能值（正弦和余弦）进行幅度调制的两个交流输出信号。通过在所接收的AC输出信号之一的电相位移动预定角度而得到的信号与另一个接收信号之间进行加法或减法，将两个电交流信号（sin（ωg±d + theta），sin（ omega±d-theta））电气合成，其具有对应于待检测位置的电相角（theta）并且在相反方向上相移。这里的“±d”表示除了要检测的位置之外的因素（如温度变化）引起的相位变化误差。在合成的两个信号中，相位变化误差（±d）出现在相同的方向，而与位置相对应的相位差（θ）以相反的方向正移动。因此，通过测量各自的相移量（±d +θ，±d-θ）并执行适当的操作，允许抵消或提取误差（±d），使得精确的相位差（θ）可以是检测到。指示检测到的相位差（θ）的位置检测数据被转换成脉冲宽度调制信号，并以脉冲宽度调制形式发送。

4. 发明授权

US5710509A Phase difference detection device for an inductive position detector 失效
标题翻译：用于感应位置检测器的相位差检测装置
公开(公告)号：US5710509A
公开(公告)日：1998-01-20
申请号：US550358
申请日：1995-10-30
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Shuiti Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Shuiti Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto , Akio Yamamoto
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245 , H03M1/64 , G01D5/243
CPC分类号： G01D5/2073 , H03M1/645
摘要： Two A.C. output signals amplitude-modulated in accordance with two function values (sine and cosine) differing from each other in correspondence to a position-to-be-detected are received from a position sensor such as a resolver. By performing an addition or subtraction between a signal derived by shifting the electric phase of one of the received A.C. output signals by a predetermined angle, and the other received signal, two electric A.C. signals (sin(.omega.t .+-.d.+-..theta.), sin(.omega.t.+-.d-.theta.)) are electrically synthesized which have electric phase angles (.theta.) corresponding to the position-to-be-detected and are phase-shifted in opposite directions. ".+-.d" here represents phase variation error caused by factors, other than the position-to-be-detected, such as temperature change. In the synthesized two signals, the phase variation errors (.+-.d) appear in the same direction, while the phase differences (.theta.) corresponding to the position are shifted in opposite, positive and negative, directions. Thus, by measuring the respective phase shift amounts (.+-.d.+-..theta., .+-.d-.theta.) and performing appropriate operation, it is allowed to cancel out or extract the error (.+-.d) so that an accurate phase difference (.theta.) can be detected.
摘要翻译：从诸如解析器的位置传感器接收根据与要检测的位置相对应的彼此不同的两个功能值（正弦和余弦）进行幅度调制的两个交流输出信号。通过在通过将接收的AC输出信号之一的电相位移位预定角度而得到的信号与另一个接收信号之间执行加法或减法，则两个电AC信号（sin（ω+Δ+/- d +/- theta ），sin（ω-t +/-dθ））被电合成，其具有对应于要被检测的位置的电相角（θ）并且在相反方向上相移。这里的“+/- d”表示除了要检测的位置之外的因素（如温度变化）引起的相位变化误差。在合成的两个信号中，相位变化误差（+/- d）出现在相同的方向，而与位置对应的相位差（θ）在相反的正负方向上移动。因此，通过测量各自的相移量（+/- d +/-θ，+/-dθ）并执行适当的操作，允许其抵消或提取误差（+/- d），使得准确可以检测相位差（theta）。

5. 发明授权

US5903205A Induction-type rotational position detecting device 失效
标题翻译：感应式旋转位置检测装置
公开(公告)号：US5903205A
公开(公告)日：1999-05-11
申请号：US693405
申请日：1996-08-07
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Shuichi Tanaka , Nobuyuki Akatsu , Kazuya Sakamoto , Hiroshi Sakamoto
IPC分类号： G01B7/00 , G01B7/30 , G01D5/20 , G01D5/245 , H01F21/06
CPC分类号： G01D5/204
摘要： A group of secondary windings are distributively provided on a stator over a predetermined range, and the respective inductance of the secondary windings in the group is set in such a manner to present predetermined inductance distribution. A rotor has an eccentric shape so as to cause variations in magnetic coupling at individual poles of the stator in response to its current rotational position. By combined use of the magnetic coupling variations between primary and secondary windings on the stator and the predetermined inductance distribution of the secondary windings, high-accuracy detection of a rotational position is achieved with a simple structure. A plurality of primary windings may be set so as to present predetermined inductance distribution.
摘要翻译：一组次级绕组在预定范围内分布地设置在定子上，并且组中的次级绕组的相应电感被设定为呈现预定的电感分布。转子具有偏心的形状，以便响应于其当前的旋转位置而引起定子各个极的磁耦合的变化。通过组合使用定子上的初级和次级绕组之间的磁耦合变化和次级绕组的预定电感分布，以简单的结构实现旋转位置的高精度检测。可以设置多个初级绕组以便呈现预定的电感分布。

6. 发明授权

US06779624B2 Control unit for power steering apparatus and steering-wheel-angle correcting system 有权
公开(公告)号：US06779624B2
公开(公告)日：2004-08-24
申请号：US10434638
申请日：2003-05-12
申请人： Atsutoshi Goto , Hiroshi Sakamoto , Yasuhiro Yuasa , Shuichi Tanaka , Shigeru Muraoka , Masakuni Tanaka
发明人： Atsutoshi Goto , Hiroshi Sakamoto , Yasuhiro Yuasa , Shuichi Tanaka , Shigeru Muraoka , Masakuni Tanaka
IPC分类号： B62D506
CPC分类号： B62D5/09
摘要： In a control unit for use with a power steering apparatus, there are provided and integrated into a single body, a main operating fluid feed device for supplying the hydraulic cylinder with an amount of oil corresponding to the amount of rotation of the steering wheel H, an auxiliary operating fluid feed device for supplying a correcting oil for adjusting drive of said hydraulic cylinder according to control signal, and a steering wheel angle sensor disposed around the rotating shaft of the steering wheel connected to said main operating fluid feed device, to detect steering wheel angle corresponding to the rotating position of said steering wheel.

7. 发明授权

US06571194B2 Position detection data generating method and apparatus based on phase shift principle 有权
标题翻译：基于相移原理的位置检测数据生成方法和装置
公开(公告)号：US06571194B2
公开(公告)日：2003-05-27
申请号：US10254404
申请日：2002-09-25
申请人： Atsutoshi Goto , Kazuya Sakamoto , Nobuyuki Akatsu
发明人： Atsutoshi Goto , Kazuya Sakamoto , Nobuyuki Akatsu
IPC分类号： G01C1700
CPC分类号： G01D5/204
摘要： The present invention is directed to a position detection method and apparatus whereby a first A.C. output signal having an electric phase angle shifted in a positive direction in accordance with a position-to-be-detected is produced along with a second A.C. output signal having an electric phase angle shifted in a negative direction. First and second detection data are then generated by detecting respective phase differences of the first and second A.C. output signals from a predetermined reference phase. The first and second predicted values are provided on the bases of at least two successive samples of the first and second detection data, respectively. The first and second predicted values are then modified to provide a standard predicted value for correcting any nonlinear error resulting from the Doppler effect. Using this standard predicted value, predictive interpolation is performed on the first and second detection data sequentially with the passage of time to provide first and second interpolated data.
摘要翻译：本发明涉及一种位置检测方法和装置，其中根据待检测位置在正方向上偏移的电相位角的第一AC输出信号与具有电相角沿负方向移动。然后通过检测来自预定参考相位的第一和第二交流输出信号的相位差产生第一和第二检测数据。第一和第二预测值分别基于第一和第二检测数据的至少两个连续采样来提供。然后修改第一和第二预测值以提供用于校正由多普勒效应产生的任何非线性误差的标准预测值。使用该标准预测值，随着时间的推移顺序地对第一和第二检测数据执行预测插值，以提供第一和第二内插数据。

8. 发明授权

US06484120B1 Position detection data generating method and apparatus based on phase shift principle 有权
标题翻译：基于相移原理的位置检测数据生成方法和装置
公开(公告)号：US06484120B1
公开(公告)日：2002-11-19
申请号：US09574163
申请日：2000-05-18
申请人： Atsutoshi Goto , Kazuya Sakamoto , Nobuyuki Akatsu
发明人： Atsutoshi Goto , Kazuya Sakamoto , Nobuyuki Akatsu
IPC分类号： G01C1700
CPC分类号： G01D5/204
摘要： First A.C. output signal sin(&ohgr;+&thgr;) having an electric phase angle shifted in a positive direction in accordance with a position-to-be-detected is produced along with a second A.C. output signal sin(&ohgr;−&thgr;) having an electric phase angle shifted in a negative direction. First and second detection data are generated by detecting respective phase differences (+&thgr; and −&thgr;) of the first and second A.C. output signals from a predetermined reference phase. First predicted value is provided on the basis of at least two successive samples of the first detection data, and a second predicted value is provided on the basis of at least two successive samples of the second detection data. The first and second predicted values are modified to provide a standard predicted value for correcting a nonlinear error resulting from the Doppler effect. Using this standard predicted value, predictive interpolation is performed on the first and second detection data sequentially with the passage of time, so as to provide first and second interpolated detection data. With this arrangement, it is possible to achieve improved response and detection performance with respect to dynamic characteristics. Error due to a temperature change or the like may be eliminated by performing an arithmetic operation on the first and second interpolated detection data, so that temperature drift characteristics can be improved.
摘要翻译：与具有电相位的第二AC输出信号sin（ω-θ）一起产生具有根据待检测位置的正方向偏移的电相角的第一AC输出信号sin（ω+θ）角度向负方向移动。通过检测来自预定参考相位的第一和第二交流输出信号的相位差（+θ和-θ）来产生第一和第二检测数据。基于第一检测数据的至少两个连续样本提供第一预测值，并且基于第二检测数据的至少两个连续样本提供第二预测值。修改第一和第二预测值以提供用于校正由多普勒效应产生的非线性误差的标准预测值。使用该标准预测值，随着时间的推移顺序地对第一和第二检测数据执行预测插值，以便提供第一和第二内插检测数据。通过这种布置，可以获得相对于动态特性的改善的响应和检测性能。可以通过对第一和第二内插检测数据执行算术运算来消除由于温度变化等引起的误差，从而可以提高温度漂移特性。

9. 发明申请

US20120031202A1 TORQUE SENSOR 有权
标题翻译：扭矩传感器
公开(公告)号：US20120031202A1
公开(公告)日：2012-02-09
申请号：US13264523
申请日：2010-04-16
申请人： Atsutoshi Goto , Yasuhiro Yuasa , Hiroshi Sakamoto , Daisuke Goto
发明人： Atsutoshi Goto , Yasuhiro Yuasa , Hiroshi Sakamoto , Daisuke Goto
IPC分类号： G01L3/02
CPC分类号： B62D6/10 , B62D5/049 , G01L3/105 , G01L25/003
摘要： An excitation AC signal biased by a predetermined DC voltage is applied to a coil to allow a DC voltage component in a coil output signal to contain failure information about disconnection, partial disconnection, or the like of the coil. The DC voltage component contained in the coil output signal is detected, and the detected DC voltage is provided as an offset voltage for a failure diagnosis. Further, to check a peak level of the excitation AC voltage, a DC voltage corresponding to the peak level may be contained in the offset voltage. A differential amplifier circuit for obtaining a difference between a coil detection output AC voltage component and a reference AC voltage component outputs an obtained differential signal offset by the offset voltage. Accordingly, the differential signal containing the offset voltage as the failure information is transmitted to a circuit for torque measurement as a torque detection signal via a single output line. The circuit for torque measurement provides the torque detection data based on the transmitted differential signal and at the same time extracts the offset voltage to use it for the failure diagnosis.
摘要翻译：将由预定直流电压偏置的激励AC信号施加到线圈，以允许线圈输出信号中的直流电压分量包含关于线圈的断开，部分断开等的故障信息。检测包含在线圈输出信号中的直流电压分量，并且检测到的直流电压被提供为用于故障诊断的偏移电压。此外，为了检查激励AC电压的峰值电平，可以在偏移电压中包含与峰值电平相对应的DC电压。用于获得线圈检测输出AC电压分量和参考AC电压分量之差的差分放大器电路输出所获得的差分信号偏移量与偏移电压。因此，将包含作为故障信息的偏移电压的差分信号通过单个输出线传送到用于转矩测量的电路作为转矩检测信号。用于转矩测量的电路基于发送的差分信号提供转矩检测数据，同时提取偏移电压以用于故障诊断。

10. 发明申请

US20070007950A1 Relative rotational position-detection device 有权
标题翻译：相对旋转位置检测装置
公开(公告)号：US20070007950A1
公开(公告)日：2007-01-11
申请号：US10569997
申请日：2004-08-27
申请人： Atsutoshi Goto , Kazuya Sakamoto , Hiroshi Sakamoto
发明人： Atsutoshi Goto , Kazuya Sakamoto , Hiroshi Sakamoto
IPC分类号： G01B7/14
CPC分类号： G01L3/105 , B62D6/10 , G01L3/104 , G01L3/109
摘要： First and second shafts (1, 2) are interconnected via a torsion bar (3) for torsional (or rotational) movement relative to each other, and first and second magnetic body sections (10, 20) are provided to rotate in interlocked relation to the rotation of the first and second shafts, respectively. The first and second magnetic body sections form at least two ring-shaped variable magnetic coupling sections opposed to each other via a gap, magnetic coupling in each of the boundary sections varies in response to variation of a relative rotational position between the first and second shafts, and variation of the magnetic coupling differs in phase between the boundary sections. Coil section (30) includes magnetic-coupling detecting coils (L1-L4) provided in corresponding relation to the boundary sections. Each of the first and second magnetic body sections is of a cylindrical shape and has a plurality of magnetic teeth formed at unequal pitches along the circumferential direction thereof, and the magnetic teeth differ in axial length among tooth groups corresponding to the boundary sections.
摘要翻译：第一和第二轴（1,2）经由扭杆（3）相互相互连接，用于相对于彼此的扭转（或旋转）移动，并且第一和第二磁性体部分（10,20）被提供以互锁的关系旋转第一和第二轴分别旋转。第一和第二磁体部分经由间隙形成彼此相对的至少两个环形可变磁耦合部分，每个边界部分中的磁耦合响应于第一和第二轴之间的相对旋转位置的变化而变化，并且磁耦合的变化在边界部分之间的相位不同。线圈段（30）包括以与边界部分对应的关系设置的磁耦合检测线圈（L 1 -L 4）。第一和第二磁性体部分中的每一个都是圆柱形的，并且具有沿其圆周方向以不等间距形成的多个磁性齿，并且磁性齿与对应于边界部分的齿组之间的轴向长度不同。

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