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公开(公告)号：US4983916A
公开(公告)日：1991-01-08
申请号：US301815
申请日：1989-01-25
CPC分类号： G01P3/487 , G01B7/003 , G01D5/2451
摘要： In construction of a magnetic encoder used for detection of displacement of a mobile body, a circular magnetized pattern is formed on one longitudinal end face of a magnetic rotary spindle mechanically coupled to the mobile body, and a magnetic sensor faces the magnetized pattern with a prescribed gap. Direct formation of the magnetized pattern on the rotary spindle excludes production errors caused by the conventional coupling process and end-face magnetization assures significant compactness of the entire construction.
摘要翻译： 在用于检测移动体的位移的磁性编码器的构造中，在与移动体机械联接的磁性旋转轴的一个纵向端面上形成圆形磁化图案，并且磁性传感器以规定的方式面对磁化图案 间隙。 在旋转主轴上直接形成磁化图案不包括由常规耦合过程引起的生产误差，并且端面磁化确保了整个结构的显着致密性。
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公开(公告)号：US4987040A
公开(公告)日：1991-01-22
申请号：US243680
申请日：1988-09-13
CPC分类号： G06K19/06187 , G01P3/481 , G01P3/487
摘要： In constructoin of a magnetic recording medium provided with one circular track for magnetic graduations and another circular track for standard marks, the standard marks are accompanied with specified magnetic identification marks so that discrimination between the standard marks can be fairly done without any influence by the number of the standard marks only by reading them out together with the identification marks. The medium is advantageously used for displacement detectors such as magnetic rotary encoders and magnetic linear scales.
摘要翻译： 在设置有用于磁刻度的一个圆形轨道和用于标准标记的另一个圆形轨道的磁记录介质的构造中，标准符号伴随有指定的磁性识别标记，使得可以在不受数字影响的情况下公正地区分标准标记 的标准标记只能与识别标记一起读出。 该介质有利地用于诸如磁性旋转编码器和磁性线性刻度的位移检测器。
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3.发明授权Overlapped magnetoresistive displacement detecting transducers having closely spaced longitudinal centers 失效具有紧密间隔的纵向中心的重叠磁阻位移检测换能器
公开(公告)号：US4806860A
公开(公告)日：1989-02-21
申请号：US59941
申请日：1987-06-09
摘要： A magnetoresistive detection head for detecting relative displacement of a magnetic recording medium relative to the detection head includes two sets of magnetoresistive elements which change their respective resistances in response to changes in the intensity of a magnetic field generated by the magnetic recording medium during the relative displacement. The magnetoresistive elements are overlapped and spaced relative to each other by a specified space lag in the direction of the relative displacement. One set of magnetoresistive elements produce a sine output and the other a cosine output. The overlapping and precise spacing of the elements aligns the phases of the signal envelopes of the sine and cosine outputs, reducing reading errors when physical warps appear on the magnetic recording medium.
摘要翻译： 用于检测磁记录介质相对于检测头的相对位移的磁阻检测头包括两组磁阻元件，它们响应于磁记录介质在相对位移期间产生的磁场强度的变化而改变其各自的电阻 。 磁阻元件在相对位移的方向上相对于彼此重叠并间隔规定的空间滞后。 一组磁阻元件产生正弦输出，另一组产生余弦输出。 元件的重叠和精确的间距使正弦和余弦输出的信号包络的相位对齐，从而在磁记录介质上出现物理翘曲时减少读取误差。
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公开(公告)号：US5007057A
公开(公告)日：1991-04-09
申请号：US298501
申请日：1989-01-18
CPC分类号： H03M1/1076 , H03M1/308
摘要： A rotary encoder which serves to generate absolute position data is outfitted with a power source monitor which generates, during a power interruption, an alarm signal which invalidates all subsequent absolute position data being outputted by the rotary encoder. Loss of output data from the rotary encoder is reliably prevented, even upon the unexpected occurrence of very short power supply interruptions. This enhances the operational reliability and stability of the encoder considerably.
摘要翻译： 用于产生绝对位置数据的旋转编码器配备有电源监视器，该电源监视器在电力中断期间产生使由旋转编码器输出的所有后续绝对位置数据无效的报警信号。 即使意外发生非常短的电源中断，可以可靠地防止来自旋转编码器的输出数据的丢失。 这显着增强了编码器的操作可靠性和稳定性。
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公开(公告)号：US4954803A
公开(公告)日：1990-09-04
申请号：US324391
申请日：1989-03-15
摘要： A magnetic-resistor sensor is provided with two or more comb-like patterns of different pitches formed on a single base plate and each comb-like pattern is adapted for use in combination with a magnetic scale of a corresponding information pitch so that one magnetic-resistor sensor could span magnetic scales of different information pitches. Such a universal magnetic-resistor sensor is used for a magnetic encoder having a magnetic scale in which a magnetic information pattern and a reference position pattern are formed in the same single track, thereby conserving space on the magnetic scale.
摘要翻译： 磁阻电阻传感器设置有形成在单个基板上的两个或更多个不同间距的梳状图案，并且每个梳状图案适用于与对应信息间距的磁标度组合使用， 电阻传感器可以跨越不同信号间距的磁标度。 这种通用磁阻电阻传感器用于具有在相同的单个轨道中形成磁信息图案和基准位置图案的磁标度的磁编码器，从而节省磁标尺上的空间。
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公开(公告)号：US4879674A
公开(公告)日：1989-11-07
申请号：US143964
申请日：1988-01-14
CPC分类号： H03M1/08
摘要： For reliable and stable detection of the movement of a mobile body, a pair of filters for performing specified and different calculations are interposed between an analog-digital (A/D) converter and a digital phase locked circuit. The calculations carried out by the filters are selectively utilized either alone or in combination to minimize noise present after A/D conversion.
摘要翻译： 为了可靠和稳定地检测移动体的运动，用于执行规定和不同计算的一对滤波器被插入在模拟数字（A / D）转换器和数字锁相电路之间。 由滤波器进行的计算选择性地单独使用或组合使用以最小化A / D转换后存在的噪声。
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公开(公告)号：US4855740A
公开(公告)日：1989-08-08
申请号：US101141
申请日：1987-09-25
CPC分类号： G06F3/0238
摘要： In construction of a keyboard for word processors and computer machines, character patterns of different key arrangement modes are stored in different memories for selective read-out so that any key arrangement mode chosen by an operator should be visually indicated on keys, thereby enabling use of a keyboard in various modes.
摘要翻译： 在构建用于文字处理器和计算机机器的键盘时，将不同的键排列模式的字符图形存储在不同的存储器中用于选择性读出，使得操作者选择的任何键排列模式应该在键上可视地指示，从而可以使用 键盘在各种模式。
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公开(公告)号：US4768119A
公开(公告)日：1988-08-30
申请号：US21179
申请日：1987-03-03
摘要： A non-contact detection head which compensates for variation and the spacing between a detection head and a circular recording medium. The recording medium has a magnetized pattern recorded along the periphery thereof, and is mounted on a central rotary shaft. A detection head is spaced from and faces the recorded pattern on the recording medium and generates an output as a function of the recorded pattern. In one embodiment, pneumatic means is provided for preventing fluctuations in the clearance between the recording medium and the detection head from influencing the output of the detection head. In a second embodiment, a mechanical arrangement is provided to achieve this result. In a third embodiment, an electrical circuit is provided to compensate for fluctuations in the clearance between the recording medium and the detection head.
摘要翻译： 一种用于补偿检测头和圆形记录介质之间的变化和间隔的非接触检测头。 记录介质具有沿其周边记录的磁化图案，并且安装在中心旋转轴上。 检测头与记录介质上的记录图案间隔开并面对记录图案，并根据记录图案生成输出。 在一个实施例中，提供气动装置以防止记录介质和检测头之间的间隙的波动影响检测头的输出。 在第二实施例中，提供机械装置以实现该结果。 在第三实施例中，提供电路以补偿记录介质和检测头之间的间隙的波动。
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公开(公告)号：US5012238A
公开(公告)日：1991-04-30
申请号：US402218
申请日：1989-09-01
CPC分类号： H03M1/287 , G01D5/2455
摘要： An absolute encoder for detecting the absolute (as opposed to the relative) rotational displacement of an encoder shaft includes a pair of pitch signals recorded on tracks and an associated signal processing circuit. The pair of pitch signals have different periods (wave lengths) which are such that they have no common factors. The signal processing circuit includes magnetic sensors for producing absolute position data indicative of the degree of displacement of the encoder shaft, on the basis of the pitch signals. Through the use of a pair of pitch signals having periods with no common factor, a high degree of resolution is obtained, without having no significantly increase the number of pitch signal tracks.
摘要翻译： 用于检测编码器轴的绝对（相对于相对）旋转位移的绝对编码器包括记录在轨道上的一对音调信号和相关联的信号处理电路。 这对音调信号具有不同的周期（波长），使得它们没有共同的因素。 信号处理电路包括用于根据音调信号产生表示编码器轴的位移程度的绝对位置数据的磁性传感器。 通过使用具有不具有共同因子的周期的一对音调信号，可以获得高分辨率，而不会明显增加音高信号轨道的数量。
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公开(公告)号：US4944028A
公开(公告)日：1990-07-24
申请号：US271388
申请日：1988-11-10
CPC分类号： G01D5/145
摘要： An improved non-contact type pattern sensor includes a magnetic resistor element arranged facing a pattern track on a recoridng medium having a magnetized pattern in the pattern track. A clearance sensor is arranged to face the pattern track on the recording medium and generates a detection signal as a function of the distance between the clearance sensor and the pattern track. The control unit connected to the clearance sensor generates an output signal which varies as a function of the detection signal. A magnetic field generator connected to the control unit is arranged near the magnetic sensor element and generates a bias magnetic field whose intensity varies as a function of the output signal.
摘要翻译： 改进的非接触型图案传感器包括磁性电阻器元件，该电阻元件相对于在图案轨迹中具有磁化图案的接收介质上的图案轨道布置。 间隙传感器布置成面对记录介质上的图案轨迹，并且产生作为间隙传感器和图案轨迹之间的距离的函数的检测信号。 连接到间隙传感器的控制单元产生作为检测信号的函数而变化的输出信号。 连接到控制单元的磁场发生器布置在磁传感器元件附近，并产生强度作为输出信号的函数而变化的偏置磁场。
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