公开(公告)号：US20130219989A1

公开(公告)日：2013-08-29

申请号：US13771132

申请日：2013-02-20

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: G01N27/22

CPC classification number: G01N27/22 ,  G01N33/2852

Abstract: A fuel property detecting device includes an electrode part; a voltage conversion part; a standard voltage application part; an amplifying part; a temperature detection unit; a storage unit; a first calculation unit; a second calculation unit for calculating alcohol concentration in fuel based on capacitance calculated by the first unit, present fuel temperature, and a map indicating a first relationship between capacitance and fuel temperature; a third calculation unit; a conductivity determination unit for determining whether present conductivity calculated by the third unit is a predetermined conductivity or larger; a fourth calculation unit for calculating a second relationship between conductivity and fuel temperature based on past conductivity, past fuel temperature, present conductivity calculated by the third unit, and present fuel temperature; and an abnormality determination unit for determining whether the electrode part is abnormal based on the second relationship, and a coefficient of temperature properties indicating the second relationship.

Abstract translation: 燃料特性检测装置包括电极部分; 电压转换部; 标准电压施加部件; 放大部分; 温度检测单元; 存储单元; 第一计算单元; 第二计算单元，用于基于由第一单元计算的电容量计算燃料中的醇浓度，当前燃料温度，以及指示电容和燃料温度之间的第一关系的映射; 第三计算单元; 用于确定由第三单元计算出的电导率是否为预定电导率或更大的电导率确定单元; 第四计算单元，用于基于过去的电导率，过去的燃料温度，由第三单元计算的当前电导率和当前的燃料温度来计算电导率和燃料温度之间的第二关系; 以及异常确定单元，用于基于第二关系确定电极部分是否异常，以及指示第二关系的温度特性系数。

公开(公告)号：US09391550B2

公开(公告)日：2016-07-12

申请号：US14722676

申请日：2015-05-27

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: H02K29/10 ,  H02P6/16

CPC classification number: H02P6/16

Abstract: A motor control system controls a rotation drive of a motor by serially switching a power supply phase of the motor based on a count value of an output signal from an encoder and prevents a temporary noise from causing an abnormal rotation of such a motor. A microcomputer determines that one of an A phase signal or a B phase signal is a noise when the two signals are input at substantially at the same timing and one of the two signals has a shorter time interval from a previous input signal. Thus, a temporary noise is prevented from corrupting normal operation between the encoder count, the rotation position of the motor, and the power supply phase.

Abstract translation: 电动机控制系统通过基于来自编码器的输出信号的计数值串联切换电动机的电源相位来控制电动机的旋转驱动，并且防止暂时的噪声引起这种电动机的异常旋转。 当基本上在相同的定时输入两个信号时，微型计算机确定A相信号或B相信号中的一个是噪声，并且两个信号之一与之前的输入信号具有较短的时间间隔。 因此，防止了临时噪声破坏编码器计数，电动机的旋转位置和电源相位之间的正常操作。

公开(公告)号：US09297793B2

公开(公告)日：2016-03-29

申请号：US14186660

申请日：2014-02-21

Applicant: DENSO CORPORATION

Inventor： Masato Ueno ,  Jun Tarui

IPC: G01R27/26 ,  G01N33/28 ,  G01N27/22 ,  G01R17/16

CPC classification number: G01N33/2852 ,  G01N27/221 ,  G01N27/226 ,  G01N27/228 ,  G01R17/16 ,  G01R27/26 ,  G01R27/2605

Abstract: An electrode unit includes a first electrode and a second electrode, which define a space to flow fuel therethough. A detection circuit is connected to the first electrode to charge and discharge the electrode unit and to detect a capacitance of fuel, which flows through the space. A switch device is equipped to a wiring, which connects the second electrode with the ground, and configured to simulate disconnection between the second electrode and the ground. A malfunction detection unit is configured to detect disconnection of the wiring when a difference between a capacitance, which is detected with the detection circuit when the switch device is turned ON, and a capacitance, which is detected with the detection circuit when the switch device is turned OFF, is smaller than a first threshold.

Abstract translation: 电极单元包括第一电极和第二电极，其限定了用于在其中流动燃料的空间。 检测电路连接到第一电极以对电极单元进行充电和放电，并且检测流过该空间的燃料的电容。 开关装置配备有将第二电极与地线连接的布线，并且被配置为模拟第二电极和地之间的断开。 故障检测单元被配置为当开关装置接通时由检测电路检测到的电容与当开关装置为检测电路时检测到的电容之间的差异检测到布线的断开 关闭，小于第一阈值。

公开(公告)号：US20140312921A1

公开(公告)日：2014-10-23

申请号：US14186660

申请日：2014-02-21

Applicant: DENSO CORPORATION

Inventor： Masato Ueno ,  Jun Tarui

IPC: G01N27/22

CPC classification number: G01N33/2852 ,  G01N27/221 ,  G01N27/226 ,  G01N27/228 ,  G01R17/16 ,  G01R27/26 ,  G01R27/2605

Abstract: An electrode unit includes a first electrode and a second electrode, which define a space to flow fuel therethough. A detection circuit is connected to the first electrode to charge and discharge the electrode unit and to detect a capacitance of fuel, which flows through the space. A switch device is equipped to a wiring, which connects the second electrode with the ground, and configured to simulate disconnection between the second electrode and the ground. A malfunction detection unit is configured to detect disconnection of the wiring when a difference between a capacitance, which is detected with the detection circuit when the switch device is turned ON, and a capacitance, which is detected with the detection circuit when the switch device is turned OFF, is smaller than a first threshold.

Abstract translation: 电极单元包括第一电极和第二电极，其限定了用于在其中流动燃料的空间。 检测电路连接到第一电极以对电极单元进行充电和放电，并且检测流过空间的燃料的电容。 开关装置配备有将第二电极与地线连接的布线，并且被配置为模拟第二电极和地之间的断开。 故障检测单元被配置为当开关装置接通时由检测电路检测到的电容与当开关装置为检测电路时检测到的电容之间的差异检测到布线的断开 关闭，小于第一阈值。

公开(公告)号：US11448316B2

公开(公告)日：2022-09-20

申请号：US16449539

申请日：2019-06-24

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: F16H61/32 ,  H02P23/18 ,  H02P6/24 ,  F16H63/38

Abstract: A shift range control apparatus controls driving of a motor in a shift range switching system provided with the motor and a shift range switching mechanism. A drive controller controls the driving of the motor to fit an engaging member in a recess according to a shift range in response to that the shift range is switched. A polarity determination device determines a polarity of a stator, which faces a rotor. The drive controller causes the engaging member to move to the recess according to the shift range, and then performs cancel energization control to energize a coil with a cancellation current which is a current reducing the magnetic flux density of the stator according to the polarity of the stator.

公开(公告)号：US09403445B2

公开(公告)日：2016-08-02

申请号：US14540429

申请日：2014-11-13

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: B60K23/00 ,  B60L15/08 ,  H02P6/16

CPC classification number: B60L15/08 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/18 ,  B60L2240/421 ,  H02P6/16 ,  Y02T10/644 ,  Y02T10/645

Abstract: A motor controller includes a motor, an encoder, and a control circuit. The motor drives a target object to be controlled. The encoder outputs a pulse signal synchronously with rotation of the motor. The control circuit rotates the motor based on a count value of the pulse signal. The control circuit switches to a sleep mode when making sure that a rotation position of the motor is stable after finishing rotating the motor or when a predetermined time necessary for the rotation position of the motor to be stable elapses after finishing rotating the motor. When a change in the pulse signal during a period of time where the control circuit is in the sleep mode is not smaller than a predetermined amount, the control circuit performs a learning process to learn a reference position of the motor when returning to a wakeup mode from the sleep mode.

Abstract translation: 电动机控制器包括电动机，编码器和控制电路。 电机驱动要控制的目标物体。 编码器与电机的旋转同步输出脉冲信号。 控制电路基于脉冲信号的计数值来旋转电动机。 在完成旋转电机之后，或者当完成电动机旋转完成电动机转动位置所需的预定时间过后，控制电路切换到休眠模式。 当在控制电路处于睡眠模式的时间段期间脉冲信号的变化不小于预定量时，控制电路执行学习处理以在返回到唤醒模式时学习电动机的参考位置 从睡眠模式。

公开(公告)号：US20190309844A1

公开(公告)日：2019-10-10

申请号：US16449539

申请日：2019-06-24

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: F16H61/32 ,  H02P23/18

Abstract: A shift range control apparatus controls driving of a motor in a shift range switching system provided with the motor and a shift range switching mechanism. A drive controller controls the driving of the motor to fit an engaging member in a recess according to a shift range in response to that the shift range is switched. A polarity determination device determines a polarity of a stator, which faces a rotor. The drive controller causes the engaging member to move to the recess according to the shift range, and then performs cancel energization control to energize a coil with a cancellation current which is a current reducing the magnetic flux density of the stator according to the polarity of the stator.

公开(公告)号：US10061305B2

公开(公告)日：2018-08-28

申请号：US15454179

申请日：2017-03-09

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: G05B1/06 ,  G05B19/4155 ,  G05B23/02 ,  H02P31/00 ,  H02P29/024 ,  H02P6/16

CPC classification number: G05B19/4155 ,  G05B23/0208 ,  G05B2219/33289 ,  G05B2219/34013 ,  H02P6/16 ,  H02P29/024 ,  H02P29/0241 ,  H02P31/00

Abstract: A controller has an encoder that outputs four-phase pulse signals according to a rotation of a rotor of a motor by a rule. During a rotational drive of the motor, when (i) an abnormal pulse state is observed in which the pulse signal is output in a non-compliant manner with the rule and (ii) a lapse time from a last normal output timing, which is a last timing of an output of the pulse signal by the rule, is longer than a threshold determination time, it is conclusively determined that the encoder has abnormality. Thus, the encoder is provided with an improved noise-proof character, and is prevented from being falsely determined as abnormal due to the abnormal pulse state, even when an output of the pulse signal from the encoder is temporarily ridden by a noise.

公开(公告)号：US09793840B2

公开(公告)日：2017-10-17

申请号：US14841946

申请日：2015-09-01

Applicant: DENSO CORPORATION

Inventor： Jun Tarui

IPC: H02P1/00 ,  H02P6/18 ,  H02P6/00 ,  H02P6/08

CPC classification number: H02P6/18 ,  H02P6/002 ,  H02P6/08

Abstract: A motor control apparatus includes a counter, a margin calculation portion, and a cycle set portion. The counter counts a total number of switching the current supply phase of the coils when the rotor is rotationally driven. A rotation angle of the rotor is detected on a basis of the number of switching. The margin calculation portion calculates a torque margin that is a difference between an output torque of the motor and a load torque acting on the motor. The cycle set portion sets a current supply switching cycle to shorten as the torque margin is greater. The current supply switching cycle is a cycle switching the current supply phase of the coils.

公开(公告)号：US09528930B2

公开(公告)日：2016-12-27

申请号：US14759670

申请日：2014-01-16

Applicant: DENSO CORPORATION

Inventor： Junichi Ishikawa ,  Jun Tarui ,  Kiyoshi Otsuka ,  Makiko Sugiura ,  Takahiko Yoshida ,  Tomohide Ariki

IPC: G02B6/42 ,  G01N15/06 ,  G01N21/43 ,  B60S1/08

CPC classification number: G01N21/43 ,  B60S1/0833 ,  G01N2021/435 ,  G01N2201/062

Abstract: An adhering matter determination portion includes an irradiation portion, a light receiving portion and a determination portion. The irradiation portion radiates a light to a plurality of different areas of a transparent plate. The light receiving portion converts reflected waves reflected at the different areas into electrical signals. The determination portion compares at least one of detection signals outputted from the light receiving portion with a determination threshold. When the detection signal is lower than the determination threshold, the determination portion determines that there is an adhering matter on the transparent plate. The determination portion compares the detection signals. When a difference of the detection signals is higher than a condensation determination value, the determination portion determines that the adhering matter is raindrops. When the difference of the detection signals is lower than the condensation determination value, the determination portion determines that the adhering matter is dewdrops.

Abstract translation: 粘附物质确定部分包括照射部分，光接收部分和确定部分。 照射部分将光照射到透明板的多个不同区域。 光接收部分将在不同区域反射的反射波转换为电信号。 确定部分将从光接收部分输出的检测信号中的至少一个与确定阈值进行比较。 当检测信号低于确定阈值时，确定部分确定在透明板上存在粘附物质。 确定部分比较检测信号。 当检测信号的差异大于冷凝判定值时，确定部分确定附着物是雨滴。 当检测信号的差低于冷凝判定值时，确定部分确定附着物是露珠的。