公开(公告)号：US20160231139A1

公开(公告)日：2016-08-11

申请号：US15015486

申请日：2016-02-04

Applicant: DENSO CORPORATION

Inventor： Akitoshi MIZUTANI

IPC: G01D5/14

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.

Abstract translation: 旋转角度检测装置包括：产生磁场的磁场产生部; 以及第一磁检测元件和第二磁检测元件，其被设置为在检测对象的旋转方向上具有90°的角度并且相对于磁性产生部分旋转。 第一磁检测元件输出第一输出信号，第二磁检测元件输出第二输出信号。 幅度偏移校正电路将第一输出信号和第二输出信号的振幅相互相差90°。 连接到幅度偏移校正电路的旋转角度计算电路基于具有匹配幅度的第一输出信号和第二输出信号来计算并输出检测对象的旋转角度。

公开(公告)号：US20160123769A1

公开(公告)日：2016-05-05

申请号：US14927688

申请日：2015-10-30

Applicant: DENSO CORPORATION

Inventor： Seiji NISHIMOTO ,  Akitoshi MIZUTANI

IPC: G01D5/14

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.

Abstract translation: 旋转角度和行程量检测装置包括传感器单元，旋转角度计算单元和行程量计算单元。 传感器单元包括sin和cos传感器，它们是检测由检测目标的旋转或线性位移引起的磁场变化的磁感应元件。 传感器单元根据sin和cos传感器的检测值输出sin和cos信号。 旋转角度计算单元基于由传感器单元输出的sin和cos信号来计算检测对象的旋转角度。 行程量计算单元基于与旋转角度计算单元相同的信号，即sin和cos信号来计算检测对象的行程量。 因此，可以简化传感器单元的配置，并且可以减小设备的物理尺寸。

公开(公告)号：US20140111193A1

公开(公告)日：2014-04-24

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

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。

公开(公告)号：US20140039829A1

公开(公告)日：2014-02-06

申请号：US13953074

申请日：2013-07-29

Applicant: DENSO CORPORATION

Inventor： Takamitsu KUBOTA ,  Akitoshi MIZUTANI ,  Yoshiyuki KONO

IPC: G01D5/14

CPC classification number: G01D5/145 ,  G01B7/00 ,  G01D3/0365 ,  G01D5/12 ,  G01D18/00 ,  G01D21/00 ,  G01R33/02 ,  G06F17/40 ,  G06F19/00

Abstract: A position detector includes a Hall element that detects a magnetic flux density and a temperature detection element that detects the temperature of the Hall element. In a rotation angle calculation process, a temperature correction value a is calculated by substituting a detection temperature t of the temperature detection element and a reference maximum voltage V0 at a reference temperature t0 for a=V0×k (t−t0). Next, a correction maximum voltage Vt is calculated by substituting the temperature correction value a for a temperature characteristic formula of Vt=V0+a. Further, a rotation angle θ of a magnet relative to the Hall element is calculated by substituting an output voltage VH of the Hall element and the correction maximum voltage Vt for θ=sin−1 (VH/Vt). Since the correction maximum voltage Vt is corrected according to the temperature, the rotation angle is accurately detected.

Abstract translation: 位置检测器包括检测磁通密度的霍尔元件和检测霍尔元件的温度的温度检测元件。 在旋转角度计算处理中，通过将温度检测元件的检测温度t和基准温度t0的基准最大电压V0代入a = V0×k（t-t0）来计算温度校正值a。 接下来，通过将温度校正值a替换为Vt = V0 + a的温度特性公式来计算校正最大电压Vt。 此外，通过将霍尔元件的输出电压VH和θ= sin-1（VH / Vt）的校正最大电压Vt代入，来计算磁体相对于霍尔元件的旋转角度θ。 由于根据温度校正校正最大电压Vt，因此精确地检测旋转角度。

公开(公告)号：US20130271118A1

公开(公告)日：2013-10-17

申请号：US13856830

申请日：2013-04-04

Applicant: DENSO CORPORATION

Inventor： Akitoshi MIZUTANI ,  Hitomi HONDA ,  Yoshiyuki KONO

IPC: G01B7/00

CPC classification number: G01B7/003 ,  G01B7/30 ,  G01D5/00 ,  G01D5/145 ,  G01D5/147

Abstract: A stroke amount detection device includes a yoke, a magnetic flux generation section, and a magnetism detection section. The yoke has a protruding section that protrudes to outside the yoke. The magnetic flux generation section is located in the yoke. The magnetism detection section is disposed between the magnetic flux generation section and the protruding section. The magnetism detection section is disposed at a fixed position with respect to the magnetic flux generation section. The magnetism detection section outputs a signal in accordance with a magnetic flux density generated due to a relative movement of the yoke with respect to the magnetism detection section.

Abstract translation: 行程量检测装置包括轭，磁通产生部和磁检测部。 轭具有突出到轭的外部的突出部分。 磁通量产生部位于磁轭中。 磁检测部设置在磁通产生部和突出部之间。 磁检测部相对于磁通产生部配置在固定位置。 磁检测部根据磁轭相对于磁检测部的相对运动而产生的磁通密度输出信号。