公开(公告)号：US20150061654A1

公开(公告)日：2015-03-05

申请号：US14296906

申请日：2014-06-05

Applicant: ALPS ELECTRIC CO., LTD.

Inventor： Takashi ONODERA ,  Tokuo NAKAMURA ,  Takafumi NOGUCHI

IPC: G01B7/30 ,  G01R33/09

CPC classification number: G01B7/30 ,  B60T7/042 ,  G01D5/145 ,  G01R33/091

Abstract: A rod-shaped magnet is mounted on a rotating unit. The rod-shaped magnet has end surfaces which are oriented in a rotating direction and are magnetized to different magnetic poles. An angle detecting unit including magnetoresistive elements is disposed so as to be offset in a radial direction of a revolution path of the magnet from the revolution path and is configured to detect a change in angle of rotation of the rotating unit by detecting a leakage magnetic field in the vicinity of a side surface of the magnet. Two position detecting units each include magnetoresistive elements and are configured to detect a change in orientation of a magnetic field in the direction of a tangent to the revolution path when facing the rod-shaped magnet and produce a switch output.

Abstract translation: 棒状磁体安装在旋转单元上。 棒状磁体具有沿旋转方向取向并被磁化到不同磁极的端面。 包括磁阻元件的角度检测单元被设置为沿着磁体从旋转路径的旋转路径的径向方向偏移，并且被配置为通过检测泄漏磁场来检测旋转单元的旋转角度的变化 在磁铁的侧面附近。 两个位置检测单元各自包括磁阻元件，并且被配置为在面向杆状磁体时检测在旋转路径的切线方向上的磁场取向的变化并产生开关输出。

公开(公告)号：US20150061653A1

公开(公告)日：2015-03-05

申请号：US14295813

申请日：2014-06-04

Applicant: ALPS ELECTRIC CO., LTD.

Inventor： Tokuo NAKAMURA

IPC: G01B7/30 ,  G01R33/09

CPC classification number: G01B7/30 ,  G01D5/16 ,  G01R33/09

Abstract: Outputs from first and second magnetic detection units are applied to first to fourth output circuits, each being a differential amplifier, and therefore detection outputs S1 and S2 approximating a sine wave reversed in positive/negative polarity with each other and detection outputs S3 and S4 approximating a cosine wave reversed in positive/negative polarity with each other can be obtained. These detection outputs S1 to S4 are applied to a switching circuit, so that a partial detection output can be obtained at intervals of 90 degrees from the detection outputs S1 and S4. In a bias adding circuit, a bias voltage is applied to each partial detection output, so that the partial detection outputs become consecutive outputs to thereby obtain an angle detection output approximating a linear function.

Abstract translation: 第一和第二磁检测单元的输出被施加到第一至第四输出电路，每个输出电路是差分放大器，因此检测输出S1和S2接近正/负极性相反的正弦波，并且检测输出S3和S4近似 可以获得在正/负极性彼此反转的余弦波。 这些检测输出S1〜S4被施加到开关电路，从而可以从检测输出S1和S4以90度的间隔获得部分检测输出。 在偏置加法电路中，将偏置电压施加到每个部分检测输出，使得部分检测输出变为连续输出，从而获得近似线性函数的角度检测输出。

公开(公告)号：US20150061559A1

公开(公告)日：2015-03-05

申请号：US14325800

申请日：2014-07-08

Applicant: ALPS ELECTRIC CO., LTD.

Inventor： Tokuo NAKAMURA

IPC: H02P6/16

CPC classification number: H02P6/16 ,  G01R33/09 ,  H02P6/12

Abstract: The outputs from a first magnetic detector and a second magnetic detector are supplied to first to fourth output circuits which are differential amplifiers, whereby first and second detected outputs which are analogous to a sine wave and whose positive-negative polarities are opposite to each other, and third and fourth detected outputs which are analogous to a cosine wave and whose positive-negative polarities are opposite to each other are obtained. The first to fourth detected outputs are supplied to a switching circuit, and detected output portions are obtained at intervals of 90° from the first to fourth detected outputs. A bias adding circuit applies a bias voltage to each of the detected output portions to obtain an angle detection output analogous to a linear function. The angle detection output is used to determine the supply timing at which a three-phase driving current is supplied.

Abstract translation: 来自第一磁检测器和第二磁检测器的输出被提供给作为差分放大器的第一至第四输出电路，由此与正弦波类似并且正负极性彼此相反的第一和第二检测输出， 并且获得与余弦波相似并且其正负极性彼此相反的第三和第四检测输出。 第一至第四检测输出被提供给开关电路，并且从第一至第四检测输出以90°的间隔获得检测的输出部分。 偏置加法电路将偏置电压施加到每个检测的输出部分，以获得类似于线性函数的角度检测输出。 角度检测输出用于确定提供三相驱动电流的电源定时。

公开(公告)号：US20140145712A1

公开(公告)日：2014-05-29

申请号：US14091235

申请日：2013-11-26

Applicant: Chiyoda Kogyo Co., Ltd. ,  ALPS ELECTRIC CO., LTD.

Inventor： Tokuo NAKAMURA ,  Yasushi WATANABE ,  Naoki TAKITA

IPC: G01R33/00

CPC classification number: F16H59/105

Abstract: A magnetic field generating portion is provided to a moving unit moving together with an operating unit. Two magnets are disposed in the magnetic field generating portion with a gap between in the direction of movement. A detection unit is provided to a fixed portion. The detection unit includes a first magnetoresistive device and a second magnetoresistive device and outputs of different combinations are obtained depending which of a first detection position, a second detection position, and an intermediate detection position, the moving unit has moved to.

Abstract translation: 磁场产生部分提供给与操作单元一起移动的移动单元。 两个磁体设置在磁场产生部分中，在运动方向之间具有间隙。 检测单元设置到固定部分。 检测单元包括第一磁阻器件和第二磁阻器件，并且根据移动单元已经移动到第一检测位置，第二检测位置和中间检测位置中的哪一个来获得不同组合的输出。