公开(公告)号：US20160065100A1

公开(公告)日：2016-03-03

申请号：US14841946

申请日：2015-09-01

Applicant: DENSO CORPORATION

Inventor： Jun TARUI

IPC: H02P6/00 ,  H02P6/18 ,  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.

Abstract translation: 电动机控制装置包括计数器，余量计算部分和周期设定部分。 当旋转驱动时，计数器计数切换线圈的电流供应相位的总数。 基于切换次数来检测转子的旋转角度。 余量计算部分计算作为电动机的输出转矩与作用于电动机的负载转矩之间的差的转矩余量。 循环设定部分设定电流供应切换周期以随着转矩裕量较大而缩短。 电流供应切换周期是切换线圈的电流供应相位的周期。

公开(公告)号：US20170023133A1

公开(公告)日：2017-01-26

申请号：US15204201

申请日：2016-07-07

Applicant: DENSO CORPORATION

Inventor： Jun TARUI

IPC: F16H61/32 ,  H02P25/08

CPC classification number: F16H61/32 ,  F16H61/12 ,  F16H2061/326 ,  H02P25/08 ,  H02P25/0925

Abstract: A microcomputer rotationally drives a motor by executing an encoder-synchronized control to sequentially switch over a current supply phase of the motor in synchronization with an output signal of the encoder. The microcomputer checks whether the motor stagnates to rotate after a start of the encoder-synchronized control. The microcomputer rotationally drives the motor by switching over from the encoder-synchronized control to a time-synchronized control to sequentially switch over the current supply phase of the motor in synchronization with a predetermined time, when the motor is determined as failing to rotate. The microcomputer thus rotationally drives the motor quickly by the time-synchronized control even when the motor fails to rotate because of delay in a switchover time of the current supply phase after the switchover of the encoder-synchronized control.

Abstract translation: 微型计算机通过执行编码器同步控制来旋转驱动电动机，以与编码器的输出信号同步地依次切换电动机的电流供应相位。 在编码器同步控制开始后，微机检查电机是否停止旋转。 当电动机被确定为不能旋转时，微型计算机通过从编码器同步控制切换到旋转驱动电动机，以与预定时间同步地依次切换电动机的电流供应相位。 即使由于编码器同步控制切换后的电流供给相位的切换时间的延迟，电动机不能旋转，因此微计算机通过时间同步控制来快速地驱动电动机。

公开(公告)号：US20140020451A1

公开(公告)日：2014-01-23

申请号：US13910369

申请日：2013-06-05

Applicant: DENSO CORPORATION

Inventor： Tatsuya KITANAKA ,  Jun TARUI ,  Hiroshi NAKAMURA ,  Masato UENO ,  Dai OSADA ,  Sadahito FUKUMORI

IPC: G01N33/22

CPC classification number: G01N33/22

Abstract: A fuel property sensor includes an electrode portion, a first thermistor, a second thermistor, and a circuit portion. The electrode portion detects an electrostatic capacity varied according to an ethanol concentration in fuel as a fuel characteristic. The first thermistor is disposed in a flowing area inside the electrode portion, where the fuel flows through. The second thermistor is disposed in a non-flowing area where no fuel flows through. The circuit portion which computes the ethanol concentration based on the electrostatic capacity, a first detection value detected by the first thermistor, and a second detection value detected by the second thermistor. Thus, a fuel temperature can be properly detected, and a detection accuracy of the fuel characteristic can be improved.

Abstract translation: 燃料特性传感器包括电极部分，第一热敏电阻器，第二热敏电阻器和电路部分。 电极部检测根据燃料中的乙醇浓度而变化的静电容量作为燃料特性。 第一热敏电阻设置在燃料流过的电极部分内的流动区域中。 第二热敏电阻设置在没有燃料流过的非流动区域中。 基于静电电容计算乙醇浓度的电路部分，由第一热敏电阻检测的第一检测值和由第二热敏电阻检测的第二检测值。 因此，可以适当地检测燃料温度，并且可以提高燃料特性的检测精度。

公开(公告)号：US20170261966A1

公开(公告)日：2017-09-14

申请号：US15454179

申请日：2017-03-09

Applicant: DENSO CORPORATION

Inventor： Jun TARUI

IPC: G05B19/4155 ,  G05B23/02 ,  H02P31/00

CPC classification number: G05B19/4155 ,  G05B23/0208 ,  G05B2219/33289 ,  G05B2219/34013 ,  H02P6/16 ,  H02P29/024 ,  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：US20150349684A1

公开(公告)日：2015-12-03

申请号：US14722676

申请日：2015-05-27

Applicant: DENSO CORPORATION

Inventor： Jun TARUI

IPC: 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：US20150346089A1

公开(公告)日：2015-12-03

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: G01N21/43

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。

公开(公告)号：US20150130387A1

公开(公告)日：2015-05-14

申请号：US14540429

申请日：2014-11-13

Applicant: DENSO CORPORATION

Inventor： Jun TARUI

IPC: H02P23/00 ,  H02P1/46 ,  B60L15/08

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。