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21. 发明授权

US4713613A Device for magnetically detecting displacement of non-magnetic movable member 失效
标题翻译：用于磁性检测非磁性可移动部件的位移的装置
公开(公告)号：US4713613A
公开(公告)日：1987-12-15
申请号：US662013
申请日：1984-10-18
申请人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata
发明人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata
IPC分类号： G01B7/00 , G01D5/18 , G01D5/244 , G01D5/245 , G01P3/44 , G01B7/28 , G11B5/39 , H01L43/08
CPC分类号： G01D5/24438 , G01D5/24476 , G01D5/2457
摘要： A device for magnetically detecting displacement, in which the middle points between the magnetic poles N and S of the magnetic signals recorded in different tracks, which are adjacent to each other, stand on common straight lines perpendicular to the direction of displacement and the direction from N to S of the magnetic signals is always the same, so that the magnetic signals in the different tracks, which are adjacent to each other, are aligned side by side and magnetic leakage between them is prevented.
摘要翻译：用于磁检测位移的装置，其中彼此相邻的记录在不同轨道中的磁信号的磁极N和S之间的中间点位于垂直于位移方向的共同直线上，磁信号的N到S总是相同的，使得彼此相邻的不同轨道中的磁信号被并排排列并且防止它们之间的磁泄漏。

22. 发明授权

US5239490A Device for detecting rotation of rotary shaft and rotation controlling apparatus using the same 失效
标题翻译：用于检测旋转轴的旋转和使用旋转轴的旋转控制装置的装置
公开(公告)号：US5239490A
公开(公告)日：1993-08-24
申请号：US581309
申请日：1990-09-12
申请人： Ryoso Masaki , Toshiyuki Koterazawa , Kazuo Tahara , Kunio Miyashita , Yoshikazu Hoshi , Tadashi Takahashi , Shuichi Nakano
发明人： Ryoso Masaki , Toshiyuki Koterazawa , Kazuo Tahara , Kunio Miyashita , Yoshikazu Hoshi , Tadashi Takahashi , Shuichi Nakano
IPC分类号： G01L3/10 , B62D5/06 , G01B7/30 , G01B21/22
CPC分类号： G01B7/30
摘要： This specification discloses inventions of a rotation detecting device for a rotary shaft and of a rotation controlling apparatus using this rotation detecting device. The rotation detecting device according to the invention comprises a signal generator for generating two signals vary their amplitude in accordance with the rotation angle of the rotary shaft and have a predetermined phase difference therebetween, part for correcting the respective center voltages output from the signal generator, part for correcting a deviation from the phase deviation between the two signals, and part for correcting the rotating amounts of the rotary shaft on the basis of the corrected two signal. The rotating amounts are represented in terms of rotating angles. A rotating torque can be obtained by calculating a difference between the rotating angles measured at two points apart from each other on the rotary shaft. The rotary shaft can be controlled in accordance with the rotating angle or the rotating torque.
摘要翻译：该说明书公开了用于旋转轴的旋转检测装置和使用该旋转检测装置的旋转控制装置的发明。根据本发明的旋转检测装置包括用于产生两个信号的信号发生器，其根据旋转轴的旋转角度改变其幅度，并且具有预定的相位差，用于校正从信号发生器输出的各个中心电压的部分，用于校正与两个信号之间的相位偏差的偏差的部分，以及用于基于校正的两个信号校正旋转轴的旋转量的部分。旋转量以旋转角度表示。可以通过计算在旋转轴上彼此分开的两个点处测量的旋转角度之间的差异来获得旋转扭矩。旋转轴可以根据旋转角度或旋转扭矩进行控制。

23. 发明授权

US4939435A Torque detecting apparatus 失效
公开(公告)号：US4939435A
公开(公告)日：1990-07-03
申请号：US340682
申请日：1989-04-20
申请人： Tadashi Takahashi , Syooichi Kawamata , Kunio Miyashita , Ryoosoo Masaki , Shigeru Kuriyama
发明人： Tadashi Takahashi , Syooichi Kawamata , Kunio Miyashita , Ryoosoo Masaki , Shigeru Kuriyama
IPC分类号： G01L3/10
CPC分类号： G01L3/109 , G01L3/104
摘要： First magnetic angular sensor outputs a sine-wave output and a cosine-wave output corresponding to positions of rotation of a rotary drum being fitted in a rotating drive shaft. Second magnetic angular sensor outputs a sine-wave output and a cosine-wave output corresponding to positions of rotation of another rotary drum being fitted on the rotating drive shaft. In case of the other output of the sine-wave output or the cosine-wave output of the first or the second magnetic angular sensor is varied while one output of the sine-wave output or the cosine-wave output in the first or the second magnetic angular sensor is not varied, the one output cosine-wave output or the sine-wave output of the first or the second magnetic angular sensor is determined to be a fault and an abnormality signal is delivered therefrom. The electric driven power steering apparatus having an assist torque means employed the magnetic angular sensor structure can be prevented in advance from the accident and high reliability thereor can be obtained.

24. 再颁专利

USRE34355E Magneto resistive sensor for detecting movement of a rotating body 失效
公开(公告)号：USRE34355E
公开(公告)日：1993-08-24
申请号：US686996
申请日：1991-04-18
申请人： Tadashi Takahashi , Hiroshi Nishida , Kunio Miyashita , Sadao Sekizawa
发明人： Tadashi Takahashi , Hiroshi Nishida , Kunio Miyashita , Sadao Sekizawa
IPC分类号： G01D5/14 , G01D5/16 , G01P3/487 , G01P13/04
CPC分类号： G01D5/145 , G01D5/16 , G01P13/045 , G01P3/487
摘要： The invention discloses a movement detecting device for detecting the movement state of a moving body such as a rotating body, in which a magnetic recording medium on which N and S magnetic poles are alternately recorded at a constant interval is fixed symmetrically with respect to a rotary shaft of a rotating body whose rotation state is to be detected, and an MR element comprising magnet-resistive elements is mounted at a fixed position relative to the magnetic recording medium so that the rotation state of the rotating body can be detected from variation of the values of resistance of the magnet-resistive elements caused by the rotation of the body. N and S poles are recorded on the magnetic recording medium with a small pole pitch P. The magnet-resistive elements are formed to have a width sufficiently smaller than the pole pitch. The magnet-resistive elements constitute a first group and a second group, the magnet-resistive elements of each group being disposed with an interval equal to the pole pitch or half the pole pitch. The magnet-resistive elements are disposed in such a manner that the interval between the groups is deviated from the pole pitch, whereby a circuit comprising these magnet-resistive elements can detect the rotation of the rotating body.

25. 发明授权

US4766376A Magnetic position detector for detecting an absolute position of a movable member 失效
标题翻译：磁性位置检测器，用于检测可动件的绝对位置
公开(公告)号：US4766376A
公开(公告)日：1988-08-23
申请号：US896255
申请日：1986-08-14
申请人： Tadashi Takahashi , Kunio Miyashita , Syouichi Kawamata
发明人： Tadashi Takahashi , Kunio Miyashita , Syouichi Kawamata
IPC分类号： G01D5/14 , G01D5/245 , G01D5/249 , H03M1/00 , G01B7/30
CPC分类号： G01D5/145 , G01D5/2497 , H03M1/203 , H03M1/143 , H03M1/26 , H03M1/285
摘要： A magnetic recording medium is provided on a rotary drum and is divided into a plurality of magnetic tracks. On each track is recorded a magnetic signal of a combination of a magnetization portion which consists of two consecutive unit magnets (pitch .lambda.) and a no-magnetization portion having the same length (2.lambda.) that are alternatingly arranged over the whole periphery of the track. First magnetoresistive elements in the magnetic sensor are arranged in pairs so as to be opposed to the magnetic tracks maintaining a distance of .lambda./2. Second magnetoresistive elements opposed to the magnetic track that correponds to the lowest-order bit of position detecting signals, are arranged in a number of ##EQU1## for the first magnetoresistive element maintaining a distance of ##EQU2## wherein SM.sub.L denotes the length of the magnetic signal of the magnetic track, m denotes the number of the increased bits (0
摘要翻译：磁记录介质设置在旋转磁鼓上并被分成多个磁迹。在每个轨道上记录由两个连续的单位磁体（间距λ）组成的磁化部分和具有相同长度（2λ）的非磁化部分的组合的磁信号，所述非磁化部分交替布置在整个周边跟踪。磁传感器中的第一磁阻元件成对配置成与保持λ/ 2的距离的磁道相对。与磁迹相对的第二磁阻元件，其对应于位置检测信号的最低位，被布置成用于第一磁阻元件的数量“IMAGE”，其中第一磁阻元件保持距离“IMAGE”，其中SML表示磁体的长度磁迹的信号，m表示增加位数（0

26. 发明授权

US4694688A Crank angle sensor 失效
标题翻译：曲柄角传感器
公开(公告)号：US4694688A
公开(公告)日：1987-09-22
申请号：US825975
申请日：1986-02-04
申请人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata
发明人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata
IPC分类号： G01B7/30 , F02P7/067 , G01B7/00 , G01D5/14 , G01D5/16 , G01D5/244 , G01D5/245 , G01M15/00
CPC分类号： G01D5/145 , F02P7/0675
摘要： A crank angle sensor comprises a magnetic recording medium rotating synchronously with crankshaft on which data is magnetically recorded and a magnetic sensor spaced apart from the magnetic medium and detecting the signals to produce rotational angle information. The magnetic recording medium is divided into plural tracks including an angle track and a cylinder track. On the angle track, unitary magnetic poles, serving as the magnetically recorded data are provided with a pitch P corresponding to the angle to be detected. The cylinder track contains unitary magnetic poles arranged adjacent those with a angle track in the pitch P and at locations which are determined by the number of cylinders of the engine. The polarities of the unitary magnetic poles on the cylinder track are the in same arrangement as those of the unitary magnetic poles of the angle track. No magnetic interference occurs between the unitary magnetic poles of the angle track and three of the cylinder track, so that angle signals and cylinder signals can be obtained with high accuracy.
摘要翻译：曲轴转角传感器包括与数据被磁记录的曲轴同步旋转的磁记录介质和与磁介质间隔开的磁传感器，并检测信号以产生旋转角度信息。磁记录介质被分成包括角度轨道和气缸轨道的多个轨道。在角度轨道上，用作磁记录数据的单位磁极具有与要检测的角度对应的间距P。气缸轨道包含与间距P中的角度轨道相邻的整体磁极，以及由发动机的气缸数确定的位置。圆柱轨道上的单一磁极的极性与角轨道的单一磁极的极性相同。在角轨道的整体磁极和气缸轨道的三个之间不产生磁干扰，从而可以高精度地获得角度信号和气缸信号。

27. 发明授权

US4818939A Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements 失效
标题翻译：利用具有串联连接的MR元件的桥接电路来磁性检测位置或速度或移动体的装置
公开(公告)号：US4818939A
公开(公告)日：1989-04-04
申请号：US19545
申请日：1987-02-26
申请人： Tadashi Takahashi , Seizi Yamashita , Kunio Miyashita , Syooichi Kawamata
发明人： Tadashi Takahashi , Seizi Yamashita , Kunio Miyashita , Syooichi Kawamata
IPC分类号： G01B7/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/244 , G01D5/245 , G01P3/487 , G01B7/14 , G01P3/42
CPC分类号： G01D5/145 , G01D5/24438 , G01D5/24476 , G01D5/2451 , G01P3/487
摘要： Magnetic poles are provided continuously with a pitch .lambda. on the peripheral portion of a drum rotated in accordance with a movement of a moving body. A magnetic sensor is provided in opposition to these poles. The sensor is formed of two magnetoresistive element pairs which are spaced from each other at .lambda./6, and the two elements in each pair are arranged in positions spaced from each other at .lambda./2. The two elements in each pair are connected in series to form a bridge circuit. The signals obtained from the nodes of the series-connected elements in the two element pairs are differentially amplified so that third harmonic wave components are eliminated, and a signal having no distortion and representative of the position or speed of the moving body can be obtained.
摘要翻译：在根据移动体的运动旋转的滚筒的周边部分上连续地设有螺距λ的磁极。提供与这些极相对的磁传感器。传感器由两个磁阻元件对形成，它们以λ/ 6彼此间隔开，并且每对中的两个元件被布置在以λ/ 2彼此间隔开的位置。每对中的两个元件串联连接以形成桥接电路。从两个元件对中的串联元件的节点获得的信号被差分放大，从而消除了三次谐波分量，并且可以获得没有失真并且代表移动体的位置或速度的信号。

28. 发明授权

US4677377A Position-detecting sensor for detecting position of a moving object utilizing magnetism 失效
标题翻译：位置检测传感器，用于利用磁力检测运动物体的位置
公开(公告)号：US4677377A
公开(公告)日：1987-06-30
申请号：US762824
申请日：1985-08-06
申请人： Tadashi Takahashi , Kunio Miyashita , Syoichi Kawamata
发明人： Tadashi Takahashi , Kunio Miyashita , Syoichi Kawamata
IPC分类号： G01D5/245 , G01B7/00 , G01D5/14 , G01D5/16 , G01D5/244 , G01P3/487 , G01B7/14 , G01B7/28
CPC分类号： G01D5/145 , G01B7/003 , G01D5/24485 , G01P3/487
摘要： A position-detecting sensor comprises a magnetic recording medium carried on a moving object and having a signal track recording a magnetic signal, a first MR element disposed nearby the magnetic recording medium and varying its internal resistance by sensing the magnetism of the magnetic recording medium, and a magnetic sensor electrically picking up resistance variation of the MR element and detecting the magnetic signal of the magnetic recording medium. In the position-detecting sensor, the present invention is arranged by providing a second magnetic signal track on the magnetic recording medium in addition to the signal track, disposing a second MR element nearby the second magnetic signal track. The variation of a gap between the magnetic recording medium and the magnetic sensor is detected as resistance variation of the second MR element. And the detected signal is serviceable as correcting the output picked up by the first MR element.
摘要翻译：位置检测传感器包括承载在移动物体上并具有记录磁信号的信号轨道的磁记录介质，设置在磁记录介质附近的第一MR元件，并且通过感测磁记录介质的磁性来改变其内阻，以及磁传感器电拾取MR元件的电阻变化并检测磁记录介质的磁信号。在位置检测传感器中，除了信号轨道之外，通过在磁记录介质上设置第二磁信号轨道来设置本发明，在第二磁信号轨道附近设置第二MR元件。检测磁记录介质和磁传感器之间的间隙的变化作为第二MR元件的电阻变化。并且所检测的信号可用于校正由第一MR元件拾取的输出。

29. 发明授权

US4594548A Multi phase magnetic sensor apparatus for detecting the position of moving member 失效
标题翻译：用于检测移动部件的位置的多相磁传感器装置
公开(公告)号：US4594548A
公开(公告)日：1986-06-10
申请号：US547259
申请日：1983-10-31
申请人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata , Shigeki Morinaga
发明人： Tadashi Takahashi , Kunio Miyashita , Syooichi Kawamata , Shigeki Morinaga
IPC分类号： G01D5/245 , G01D5/14 , G01D5/16 , G01P3/487 , G01B7/14 , G01R33/02
CPC分类号： G01D5/145
摘要： An apparatus for detecting the position of a moving member comprising a moving member having a magnetic substance with magnetical signals recorded thereon, and a stationary magnetic sensor confronting the moving member and having a plurality of magnetoresistive elements, wherein the magnetoresistive elements are disposed in the magnetic sensor such that the elements have a phase difference of .pi./m in electrical angle, where m is an even number larger than or equal to four, for obtaining the positional signal of the moving member.
摘要翻译：一种用于检测移动构件的位置的装置，包括具有记录有磁信号的磁性物质的移动构件和面对移动构件并具有多个磁阻元件的固定磁传感器，其中磁阻元件设置在磁传感器，使得元件具有电角度的π/ m的相位差，其中m是大于或等于4的偶数，用于获得移动构件的位置信号。

30. 发明申请

US20120068694A1 METHOD OF DETECTING ABSOLUTE ROTATIONAL POSITION 审中-公开
标题翻译：检测绝对旋转位置的方法
公开(公告)号：US20120068694A1
公开(公告)日：2012-03-22
申请号：US12596006
申请日：2007-04-24
申请人： Muneo Mitamura , Kunio Miyashita , Junji Koyama
发明人： Muneo Mitamura , Kunio Miyashita , Junji Koyama
IPC分类号： G01B7/30
CPC分类号： G01D5/2497 , G01D5/145
摘要： Before detecting a mechanical angular absolute position θabs of a rotating shaft (4) within one turn using a two-pole absolute value encoder (2) and a multi-pole absolute value encoder (3) having Pp (Pp: an integer of 3 or more) pole pairs, the rotating shaft (4) is rotated to measure a temporary absolute value θelt of the multi-pole absolute value encoder (3) in relation to each absolute value θt of the two-pole absolute value encoder (2), and a temporary pole-pair number (Nx) for a multi-pole magnet is assigned to each absolute value θt. In actual detecting, an absolute value θti of the two-pole absolute value encoder and an absolute value θelr of the multi-pole absolute value encoder are measured, the temporary pole-pair number (Nx) assigned to the absolute value θti is corrected on the basis of an absolute value θelti of the multi-pole absolute value encoder assigned to the absolute value θti and the measured absolute value θelr, thus calculating a pole-pair number (Nr). The absolute position θabs is calculated using an expression of (Nr×θelp+θelr)/Pp with a mechanical angle θelp corresponding to an electrical angle of one period of an output signal of the multi-pole absolute value encoder.
摘要翻译：在使用两极绝对值编码器（2）和具有Pp（Pp：的整数的多极绝对值编码器（3））检测一圈内的旋转轴（4）的机械角度绝对位置和abs之前， 3个或更多个）极对，旋转轴（4）旋转以测量多极绝对值编码器（3）的临时绝对值和等于两极绝对值的绝对值的绝对值 t = 0，对于多极磁铁的数值编码器（2）和临时极对数（Nx）分配给每个绝对值。在实际检测中，测量两极绝对值编码器的绝对值＆ti; ti，多极绝对值编码器的绝对值＆amp; elr，分配给绝对值的临时极对数（Nx）基于分配给绝对值＆tt; ti的绝对值和绝对值的绝对值＆amp; etti; elti和测量的绝对值＆etta; elr来校正ti，从而计算极对数（Nr）。绝对位置和绝对值; abs是使用（Nr×＆thetas; elp +＆thetas; elr）/ Pp的表达式计算的，其机械角度＆amp;对应于多极绝对值的输出信号的一个周期的电角度值编码器。

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