公开(公告)号：US09709422B2

公开(公告)日：2017-07-18

申请号：US14927688

申请日：2015-10-30

Applicant: DENSO CORPORATION

Inventor： Seiji Nishimoto ,  Akitoshi Mizutani

IPC: G01B7/30 ,  G01D5/14 ,  G01D5/20 ,  G01B7/312

CPC classification number: G01D5/145 ,  G01B7/312 ,  G01D5/2046

Abstract: A rotation angle and stroke amount detection device includes a sensor unit, a rotation angle calculation unit, and a stroke amount calculation unit. The sensor unit includes sin and cos sensors which are magnetic sensing elements that detect changes in a magnetic field caused by rotation or linear displacement of a detection target. The sensor unit outputs sin and cos signals based on detection values of the sin and cos sensors. The rotation angle calculation unit calculates a rotation angle of the detection target based on the sin and cos signals output by the sensor unit. The stroke amount calculation unit calculates a stroke amount of the detection target based on the same signals as those used by the rotation angle calculation unit, i.e., the sin and cos signals. Accordingly, the configuration of the sensor unit may be simplified and the physical size of the device may be reduced.

公开(公告)号：US09677912B2

公开(公告)日：2017-06-13

申请号：US15015486

申请日：2016-02-04

Applicant: DENSO CORPORATION

Inventor： Akitoshi Mizutani

IPC: G01B7/14 ,  G01B7/30 ,  G01R33/06 ,  H01L43/06 ,  G01D5/14 ,  G01R21/08 ,  G01R15/20 ,  G01R33/07

CPC classification number: G01D5/145 ,  G01D5/142 ,  G01R15/202 ,  G01R21/08 ,  G01R33/06 ,  G01R33/07 ,  G01R33/077

Abstract: A rotation angle detection device includes: a magnetic field generation portion that generates a magnetic field; and a first magnetism detection element and a second magnetism detection element disposed to have an angle of 90° therebetween in a rotation direction of the detection target and to rotate relative to the magnetism generation portion. The first magnetism detection element outputs a first output signal, and the second magnetism detection element outputs a second output signal. An amplitude shift correction circuit matches amplitudes of the first output signal and the second output signal which differ in phase by 90° from each other. A rotation angle computation circuit connected to the amplitude shift correction circuit computes and outputs a rotation angle of a detection target based on the first output signal and the second output signal having matched amplitudes.

公开(公告)号：US09322888B2

公开(公告)日：2016-04-26

申请号：US13935012

申请日：2013-07-03

Applicant: DENSO CORPORATION

Inventor： Takamitsu Kubota ,  Akitoshi Mizutani ,  Yoshiyuki Kono

IPC: G01D5/12 ,  G01R33/02 ,  G01R3/00 ,  G01R33/07

CPC classification number: G01R33/02 ,  G01R3/00 ,  G01R33/072 ,  Y10T29/49004

Abstract: A position detection apparatus includes a magnetic generator, a magnetic detector, a storage, and a rotation angle calculator. The rotation angle calculator calculates a relative rotation angle of the magnetic generator with respect to the magnetic detector based on a voltage output from the magnetic detector and a relational expression of θ=sin−1((VH−c)/V0)−b. In the relational expression, the relative rotation angle is defined as θ, the voltage output from the magnetic detector is defined as VH, a true maximum value of the voltage output from the magnetic detector is defined as V0, a first true correction value is defined as b, and a second true correction value is defined as c.

Abstract translation: 位置检测装置包括磁性发生器，磁性检测器，存储器和旋转角度计算器。 旋转角度计算器基于从磁性检测器输出的电压和＆amp; t = sin-1（（VH-c）/ V0）-b的关系式来计算磁性发生器相对于磁性检测器的相对旋转角度 。 在上述关系式中，相对旋转角被定义为θ，从磁探测器输出的电压被定义为VH，被定义为V0，第一真实校正值是从磁探测器输出的电压的真实最大值 定义为b时，和一个第二真修正值定义为c。

公开(公告)号：US09163956B2

公开(公告)日：2015-10-20

申请号：US14025877

申请日：2013-09-13

Applicant: DENSO CORPORATION

Inventor： Takehito Mizunuma ,  Tomoyuki Takiguchi ,  Akitoshi Mizutani ,  Yoshiyuki Kono

IPC: G01D5/12 ,  G01D3/028 ,  G01D5/14

CPC classification number: G01D5/12 ,  G01D3/028 ,  G01D5/145

Abstract: In a rotation angle detecting device, a signal from a first magnetism detecting element is outputted to a signal output part of a first IC package. A first signal output terminal outputs the signal from the first magnetism detecting element to outside. A signal from a second magnetism detecting element is outputted to a signal output part of a second IC package. A second signal output terminal outputs the signal from the second magnetism detecting element to outside. At least one of a power supply terminal and a ground terminal is located between the first and second signal output terminals. A rotary drive unit includes the device, a motor that rotates a detection object, and a motor power source wire. The ground terminal and a motor power source terminal are adjacent to each other.

Abstract translation: 在旋转角检测装置中，来自第一磁检测元件的信号被输出到第一IC封装的信号输出部分。 第一信号输出端子将来自第一磁检测元件的信号输出到外部。 来自第二磁检测元件的信号被输出到第二IC封装的信号输出部分。 第二信号输出端子将来自第二磁检测元件的信号输出到外部。 电源端子和接地端子中的至少一个位于第一和第二信号输出端子之间。 旋转驱动单元包括该装置，旋转检测对象的马达和马达电源线。 接地端子和电机电源端子彼此相邻。