-
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。
-
12.发明授权Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements 失效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
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。
-
13.再颁专利Apparatus magnetically detecting position or speed of moving body utilizing bridge circuit with series connected MR elements 失效利用具有串联连接MR元件的桥式电路，磁力检测移动体的位置或速度
公开(公告)号：USRE34443E
公开(公告)日：1993-11-16
申请号：US643124
申请日：1991-01-18
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.
-
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。
-
15.发明授权
公开(公告)号：US4786870A
公开(公告)日：1988-11-22
申请号：US916699
申请日：1986-10-08
摘要： A magnetic position detector having a rotary magnetic recording medium which is movable with a movable body the position of which is to be detected. The rotary magnetic recording medium is divided into plural channels, each of which includes two tracks. A magnetic sensor is disposed to face the magnetic recording medium with a predetermined air gap therebetween and includes two sets of magnetoresistive elements spaced by a predetermined distance for each channel. Each set of magnetoresistive elements includes two elements wherein the first elements of the two sets face one of the tracks of a channel and the second elements of the other of the two sets faces the other track and the first and second elements of the two sets are formed as one body with adjacent ends of the first and second elements being coupled with each other. The coupled adjacent ends are connected to either one of first terminals for deriving output voltages from the magnetoresistive elements or to second terminals for supplying the magnetoresistive elements with source voltage. The non-adjacent ends of the first and second elements which are opposite to the coupled ends are connected to the other of the first and second terminals. In this manner, the sensor can be made small in size and the resistivity against noise is enhanced.
摘要翻译： 一种具有旋转磁记录介质的磁性位置检测器，其可移动的位置被检测的可移动体。 旋转磁记录介质被分成多个通道，每个通道包括两个轨道。 磁传感器设置成面对磁记录介质，其间具有预定的气隙，并且包括为每个通道隔开预定距离的两组磁阻元件。 每组磁阻元件包括两个元件，其中两组的第一元件面对通道的轨道中的一个，并且两组中的另一个的第二元件面对另一个轨道，并且两组的第一和第二元件是 形成为一体，第一和第二元件的相邻端彼此连接。 耦合的相邻端连接到用于从磁阻元件导出输出电压的第一端子中的任一个或用于向磁阻元件提供源极电压的第二端子。 与耦合端相对的第一和第二元件的不相邻的端部连接到第一和第二端子中的另一个。 以这种方式，可以使传感器尺寸变小，并提高抗噪声电阻率。
-
公开(公告)号：US4707695A
公开(公告)日：1987-11-17
申请号：US510914
申请日：1983-07-05
CPC分类号： G01D5/145 , G01D5/2457 , H03M1/308
摘要： In a magnetic detector for receiving a reference position signal in movement from an encoder track and a reference track arranged on a member included in a magnetic position sensor, magnetic pickups respectively confronting to the encoder track and the reference track are provided and both tracks jointly yield a position reference signal.
摘要翻译： 在用于从编码器轨道和布置在包括在磁位置传感器中的构件上的参考轨道接收基准位置信号的磁检测器中，提供分别面向编码器轨道和参考轨道的磁性拾取器，并且两个轨迹共同产生 位置参考信号。
-
公开(公告)号：US4473786A
公开(公告)日：1984-09-25
申请号：US354282
申请日：1982-03-03
IPC分类号： G05B19/23 , G05B19/416 , G05B13/00
CPC分类号： G05B19/416 , G05B19/237
摘要： A method and apparatus for controlling the angular position of a motor by controlling the revolution of the motor in response to a given positioning command value commanding a predetermined angular position of the motor shaft so as to stop the motor shaft at the predetermined angular position, wherein the acceleration of the motor being accelerated in the initial acceleration stage of the motor position control operation is calculated, and on the basis of the calculated acceleration and a commanded maximum velocity, the remainder angular distance between the deceleration starting angular position and the desired angular position of the motor and the deceleration command value in the deceleration stage are calculated so as to control the deceleration of the motor on the basis of the calculated values.
摘要翻译： 一种方法和装置，用于通过响应给定定位指令值控制电动机的转动来控制电动机的角度位置，所述定位指令值指令电动机轴的预定角位置，以将电动机轴停止在预定的角位置，其中 计算在电动机位置控制动作的初始加速阶段加速的电动机的加速度，根据计算出的加速度和命令的最大速度，减速开始角位置与期望角位置之间的剩余角距离 并且计算减速阶段的电动机的减速指令值，并根据计算出的值来控制电动机的减速度。
-
公开(公告)号：US4195585A
公开(公告)日：1980-04-01
申请号：US891034
申请日：1978-03-28
摘要： A protection apparatus for an electric sewing machine having a drive mechanism for driving the sewing machine by a motor comprises a speed detecting means for detecting a rotational speed of a shaft of the sewing machine, comparator means for comparing a rotational speed signal of the shaft of the sewing machine from the speed detecting means with an externally applied speed command signal indicative of a predetermined rotational speed of the sewing machine to determine from the comparison result whether the sewing machine is in a fault state, and invalidation means for deactivating the drive mechanism when the fault state of the sewing machine is determined by the comparison means. The protection apparatus detects the rotation of the shaft of the sewing machine while an operation command for the sewing machine is being inputted to early-detect an overload condition of the sewing machine. When an overload condition is detected, the motor and hence the sewing machine is stopped to prevent the damage of the motor.
摘要翻译： 一种用于电动缝纫机的保护装置，其具有用于通过电动机驱动缝纫机的驱动机构，包括用于检测缝纫机的轴的转速的速度检测装置，用于将缝纫机的轴的转速信号进行比较的比较装置 来自速度检测装置的缝纫机具有指示缝纫机的预定旋转速度的外部施加的速度指令信号，以根据比较结果确定缝纫机是否处于故障状态，以及用于使驱动机构失效的无效装置， 缝纫机的故障状态由比较装置决定。 当输入缝纫机的操作命令以早期检测缝纫机的过载状况时，保护装置检测缝纫机的轴的旋转。 当检测到过载情况时，电机，因此缝纫机停止，以防止电机损坏。
-
公开(公告)号：US3969661A
公开(公告)日：1976-07-13
申请号：US498663
申请日：1974-08-19
CPC分类号： H02P3/12
摘要： A motor control apparatus is disclosed which comprises a speed control device for operating at a command speed a DC motor connected to a DC power supply, a dynamic braking device for braking the motor upon the issuance of a deceleration command, and a low-speed detector for generating a detection signal when the magnitude of the braking current of the motor is reduced below a set level. When the low-speed detector is energized, the speed control device is regulated thereby to run the motor at a predetermined low speed.
摘要翻译： 公开了一种电动机控制装置，其包括用于以指令速度操作连接到直流电源的DC电动机的速度控制装置，用于在发出减速命令时制动电动机的动态制动装置，以及低速检测器 用于当电动机的制动电流的大小降低到设定水平以下时产生检测信号。 当低速检测器通电时，速度控制装置被调节从而以预定的低速运行电动机。
-
公开(公告)号：US4621224A
公开(公告)日：1986-11-04
申请号：US721959
申请日：1985-04-11
CPC分类号： G01P3/489
摘要： A position/speed detection method and apparatus employing an encoder mounted on the rotary shaft of a motor in order to control the position and speed, wherein the coarse position and fine position are simultaneously detected by an encoder pulse and an encoder original signal, respectively and the detected results are combined to detect the position and speed of the motor with high precision.
摘要翻译： 一种位置/速度检测方法和装置，其使用安装在电机的旋转轴上的编码器来控制位置和速度，其中粗略位置和精细位置分别由编码器脉冲和编码器原始信号同时检测， 结合检测结果，高精度地检测电机的位置和速度。
-
-
-
-
-
-
-
-
-
搜索结果
183 条记录 (耗时 0.021 秒)