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公开(公告)号：US5453972A
公开(公告)日：1995-09-26
申请号：US10019
申请日：1993-01-27
申请人： Hiroshi Kanazawa , Fumio Tajima , Ryoichi Naganuma , Nobuyoshi Mutoh , Tadashi Takahashi , Hideki Nihei , Shunichi Tanae , Hideaki Horie , Syooichi Kawamata
发明人： Hiroshi Kanazawa , Fumio Tajima , Ryoichi Naganuma , Nobuyoshi Mutoh , Tadashi Takahashi , Hideki Nihei , Shunichi Tanae , Hideaki Horie , Syooichi Kawamata
IPC分类号： G11B7/085 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/04 , G11B33/08 , H02K21/14 , H02K21/24 , G11B7/12
CPC分类号： G11B17/0282 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/043 , G11B33/08 , G11B7/08505 , G11B7/08582 , H02K21/14 , H02K21/24
摘要： A portable-type disk apparatus for a 3.5-inch or less optical disk implemented in a thin, light-weight and miniaturized structure having a vibration-withstanding capability. An optical head assembly is disposed stationarily while an optical disk and a spindle motor for rotating the optical disk are disposed movably in a diametrical direction of the optical disk. The spindle motor is constituted by a brushless motor of a substantially semi-circular form in cross section and having a laterally truncated portion. The optical head assembly including an optical head and a laser circuit is disposed at the side of the laterally truncated portion.
摘要翻译： 一种用于3.5英寸或更小的光盘的便携式盘装置，其实现为具有耐振动能力的薄，轻重量和小型化结构。 一个光头组件被放置在一个光盘和一个用于旋转光盘的主轴电动机的位置上，可移动地设置在光盘的直径方向上。 主轴电动机由横截面为大致半圆形的无刷电动机构成，具有横向截断部分。 包括光学头和激光电路的光学头组件设置在横截面的一侧。
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公开(公告)号：US5245232A
公开(公告)日：1993-09-14
申请号：US844780
申请日：1992-03-02
CPC分类号： H02K41/031 , G11B21/083 , G11B7/08582 , H02P6/006 , H02P6/34
摘要： A linear actuator for e.g. a disk drive has a fixed member and a movable member. One of those members carries at least one track of permanent magnets extending in the direction in which the movable member is to move, with adjacent permanent magnets having alternate magnetic polarity. The other member has first and second drive parts, each having at least one pair of opposing sets of teeth. The moveable member or each track passes between those teeth. Each pair of teeth is associated with a corresponding drive coil giving the teeth a magnetic polarity so that there is a magnetic alignment between a polarity of the teeth and the permanent magnets. The drive parts are arranged so that, for any given relative position of the first and second members, the magnetic alignment of the teeth of one drive part is out of phase with the magnetic alignment of the teeth of the other part. In order to ensure that the magnetic alignments are out of phase, there may be a physical displacement between the teeth of the two drive parts. This displacement may be (m.+-.1/2).multidot.T.sub.p, where m is an integer and T.sub.p is the teeth pitch. This gives a phase displacement of 180.degree.. Alternatively, the drive parts may be aligned, and two tracks of permanent magnets be provided with the magnets thereof having opposite polarity for a given track position, or the drive current to the drive coils may be controlled to be out of phase.
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公开(公告)号：US4874053A
公开(公告)日：1989-10-17
申请号：US209998
申请日：1988-06-22
申请人： Hiroshi Kimura , Shotaro Naito , Kunio Miyashita , Yasuo Noto , Noboru Sugiura , Tadashi Takahashi , Hirohisa Yamamura , Seizi Yamashita , Syooichi Kawamata , Fumio Tajima , Shigeru Horikoshi
发明人： Hiroshi Kimura , Shotaro Naito , Kunio Miyashita , Yasuo Noto , Noboru Sugiura , Tadashi Takahashi , Hirohisa Yamamura , Seizi Yamashita , Syooichi Kawamata , Fumio Tajima , Shigeru Horikoshi
CPC分类号： B62D6/10 , G01L3/104 , G01L3/109 , G01L5/221 , B60G2204/11
摘要： A device for detecting a load torque using angle detectors fitted with a certain spacing on a shaft which is rotated by a drive source and on the basis of a relative angular difference of angles detected by the angle detectors. The device includes two rotary drums or discs fitted with a certain spacing on the drive side and load side of the shaft, with a plurality of magnetic poles for generating magnetic signals being formed on the surface thereof, and a magnetic sensor disposed to confront the surface of the rotary drums or discs, with magnetic resistance effect elements which vary in internal resistance in response to the magnetism of the magnetic poles being provided thereon. The amount of torsion created by the load on the load side of the rotary shaft is measured as a phase difference of outputs of the magnetic sensor, and the torque is detected in terms of the angular difference between the magnetic drums or discs. The device is operative to detect a torque in both storage and rotation, and capable of detection within a period of magnetic signal, whereby high-accuracy, high-resolution torque detection is made possible.
摘要翻译： 一种用于使用角度检测器检测负载转矩的装置，所述角度检测器在由驱动源旋转的轴上并且基于由角度检测器检测的角度的相对角度差异在轴上具有一定间隔。 该装置包括两个旋转鼓或盘，其在驱动侧和负载侧安装一定间隔，在其表面上形成有用于产生磁信号的多个磁极和设置成面对表面的磁传感器 具有响应于设置在其上的磁极的磁性而在内阻中变化的磁阻效应元件。 由旋转轴的负载侧上的负载产生的扭转量作为磁传感器的输出的相位差被测量，并且根据磁鼓或盘之间的角度差来检测转矩。 该装置用于检测存储和旋转两者中的转矩，并且能够在磁信号的一段时间内进行检测，由此可以实现高精度，高分辨率的扭矩检测。
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公开(公告)号：US5351027A
公开(公告)日：1994-09-27
申请号：US852663
申请日：1992-03-17
CPC分类号： G01R33/09
摘要： A magnetic sensor has a elongate sensor region formed by an elongate magneto-resistive element and an overlapping elongate conductive element. The ends of the magneto-resistive element and the conductive element are connected to terminals which are arranged in an array which is spaced in a predetermined direction from the elongate sensor region. The array may be at one side or one end of the elongate sensor region, and the terminals may have a linear arrangement within the array. The two terminals connected to the magneto-resistive element are preferably adjacent, and preferably the terminals connected to the ends of the magneto-resistive element and the conductive element closer to the array are also adjacent. A common terminal may be provided. Two such sensors may form a sensor array which is particularly suitable for use in a position sensor in e.g. a torque sensor of a power steering system.
摘要翻译： 磁传感器具有由细长磁阻元件和重叠的细长导电元件形成的细长传感器区域。 磁阻元件和导电元件的端部连接到以与从细长传感器区域预定方向隔开的阵列布置的端子。 阵列可以在细长传感器区域的一侧或一端，并且端子可以在阵列内具有线性排列。 连接到磁阻元件的两个端子优选地相邻，并且优选地，连接到磁阻元件的端部和更靠近阵列的导电元件的端子也相邻。 可以提供公共终端。 两个这样的传感器可以形成特别适合用于例如位置传感器的传感器阵列。 动力转向系统的转矩传感器。
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公开(公告)号：US4939435A
公开(公告)日：1990-07-03
申请号：US340682
申请日：1989-04-20
IPC分类号： G01L3/10
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.
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6.发明授权Magnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortion 失效磁性位置检测装置具有布置在桥式电路中的具有磁阻器的两个磁记录介质轨道，以消除偶次谐波失真
公开(公告)号：US5019776A
公开(公告)日：1991-05-28
申请号：US355343
申请日：1989-05-23
摘要： An apparatus for magnetically detecting a positional relation between first and second members the positions of which change relative to each other comprises a magnetic recording medium carried on the first member and a magnetic sensor substrate supported by the second member. Two or more tracks each including a multiplicity of magnetic poles arranged at a predetermined pitch are provided on the magnetic recording medium, corresponding to the respective phases of two or more detection signals to be detected by the apparatus and in a direction in which the positional relation between the first and second members changes. The magnetic poles in any one of the tracks are shifted with respect to the magnetic poles in the other track by an amount corresponding to a phase difference between the detection signal for the phase which corresponds to the one track and the detection signal for the phase which corresponds to the other track. The magnetic sensor substrate includes a plurality of magnetoresistive elements which are respectively provided corresponding to the tracks and the electrical resistance value of each of which changes in response to a magnetic field originating from the corresponding track. The magnetoresistive elements are combined to generate electric signals as the detection signals. Each of the magnetoresistive elements corresponding to any one of the tracks and the corresponding one of the magnetoresistive elements corresponding to the other track are placed at the same position when viewed in the direction in which the positional relation between the first and second members changes.
摘要翻译： 一种用于磁性检测第一和第二构件之间的位置关系的装置，其位置彼此相对变化，包括承载在第一构件上的磁记录介质和由第二构件支撑的磁传感器基板。 在磁记录介质上设置两个或更多个磁道，每个磁道包括以预定间距排列的多个磁极，对应于由装置检测的两个或更多个检测信号的相位和位置关系 第一和第二个成员之间的变化。 任何一个轨道中的磁极相对于另一轨道中的磁极移动相当于对应于一个磁道的相位的检测信号和相位检测信号之间的相位差的量， 对应其他轨道。 磁传感器基板包括分别对应于轨道设置的多个磁阻元件，并且每个电阻值响应于来自相应轨道的磁场而改变。 磁阻元件被组合以产生电信号作为检测信号。 与第一和第二构件之间的位置关系改变的方向观察时，对应于轨道中的任何一个的磁阻元件和对应于另一个轨道的对应的一个磁阻元件中的每一个被放置在相同的位置。
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7.发明授权Apparatus for magnetically detecting positions with minimum length magnetic information units recorded on a plurality of magnetic tracks 失效用于磁性检测记录在多个磁迹上的最小长度磁信息单元的位置的装置
公开(公告)号：US4904937A
公开(公告)日：1990-02-27
申请号：US253333
申请日：1988-10-03
CPC分类号： H03M1/285 , H03M1/0685
摘要： The present invention relates to an apparatus for magnetically detecting positions and intends to provide a position detecting apparatus of the kind with high accuracy in which when recording magnetic signals of a predetermined length on magnetization tracks, a plurality of recording units are continuously arranged in the direction of the magnetization track and are set as the predetermined recording length, thereby sharpening the output waveform of the signal corresponding to the edge portion of the magnetization recording length. The present invention is suitable for the absolute type having a plurality of magnetization tracks.
摘要翻译： 本发明涉及一种用于磁性检测位置的装置，其目的是提供一种高精度的位置检测装置，其中当在磁化轨迹上记录预定长度的磁信号时，多个记录单元沿着方向连续地布置 并将其设定为预定的记录长度，由此锐化对应于磁化记录长度的边缘部分的信号的输出波形。 本发明适用于具有多个磁化轨迹的绝对型。
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8.发明授权Device for magnetically detecting displacement of non-magnetic movable member 失效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
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。
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公开(公告)号：US4983893A
公开(公告)日：1991-01-08
申请号：US678486
申请日：1984-12-05
IPC分类号： G05D3/12 , G05B19/35 , H02K41/035 , H02P25/02
CPC分类号： G05B19/358 , H02K41/0356 , H02P25/034
摘要： An actuator has a stepping motion function with a high stopping accuracy and resolution. The actuator includes a fixed portion and a movable portion constructed in combination so as to be movable relative to each other, a coil for imparting a moving force to the movable portion, a magnetic recording medium mounted on one of the fixed portion and the movable portion and recording magnetic signals, and a plurality of magnetic sensors mounted on the other thereof for detecting said magnetic signals in said magnetic recording medium, and wherein signals different in phase and output from said respective sensors are used by themselves, or signals inversely converted from the former signals are additionally used, and the coil is supplied with a driving force command by sequentially selecting and changing those signals.
摘要翻译： 执行器具有高停止精度和分辨率的步进运动功能。 致动器包括固定部分和可相对于彼此移动的组合的可动部分，用于向可动部分施加移动力的线圈，安装在固定部分和可动部分之一上的磁记录介质 和记录磁信号，以及安装在另一个上的多个磁传感器，用于检测所述磁记录介质中的所述磁信号，并且其中相位不同的信号和从所述各个传感器输出的信号本身使用，或从该信号反向转换的信号 另外使用前一个信号，并且通过依次选择和改变那些信号来向线圈提供驱动力命令。
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公开(公告)号：US4694688A
公开(公告)日：1987-09-22
申请号：US825975
申请日：1986-02-04
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。
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