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公开(公告)号：US20210262566A1
公开(公告)日：2021-08-26
申请号：US17318508
申请日：2021-05-12
Applicant: DENSO CORPORATION
Inventor： Yusaku KAWAGUCHI , Jun YAMADA , Seiji NAKAYAMA
Abstract: A shift range control device includes an encoder count unit, an energization control unit, a learning unit, an energization phase count unit, and an abnormality determination unit. The encoder count unit calculates an encoder count value based on an encoder signal. The energization control unit controls energization to the motor. The learning unit learns a wall position that is the encoder count value when an engaging member abuts on the wall portion. The energization phase count unit calculates an energization phase count value that is counted according to switching of the energization phase. The abnormality determination unit determines an abnormality of the encoder based on the energization phase count value and the encoder count value before and after learning the wall position.
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公开(公告)号：US20170077858A1
公开(公告)日：2017-03-16
申请号：US15237907
申请日：2016-08-16
Applicant: DENSO CORPORATION
Inventor： Kazuhiro YOSHIDA , Seiji NAKAYAMA
CPC classification number: H02P23/20 , F16H61/28 , F16H2061/2823 , H02P25/08 , H02P27/06
Abstract: A motor control device is provided with a control circuit and a driving circuit. The control circuit switches over a current supply phase of the motor in a predetermined angular rotation of the rotor a first switching number of times in an acceleration range. The control circuit switches over the current supply phase of the motor in the predetermined angular rotation of the rotor a second switching number of times in a stationary rotation range in a specific condition that the rotation speed of the rotor is between a predetermined first threshold value and a predetermined second threshold value. The control circuit sets the second switching number to be smaller than the first switching number. In the acceleration range, the switching number is relatively large and hence a sufficient driving torque is applied to the rotor. In the stationary rotation range, the switching number is relatively small and hence the control circuit 61 needs to operate less, a current supply period for the motor is shortened and heat generation is suppressed.
Abstract translation: 电动机控制装置具有控制电路和驱动电路。 控制电路在转子的预定角度旋转中切换电动机的电流供应相位，其加速度范围为第一切换次数。 在转子的旋转速度在预定的第一阈值和第二阈值之间的特定条件下，控制电路在转子的预定角度旋转中切换转子的预定角度旋转中的第二切换次数 预定的第二阈值。 控制电路将第二开关数设定为小于第一开关数。 在加速范围内，切换次数相对较大，因此向转子施加足够的驱动转矩。 在固定旋转范围内，切换次数相对较小，因此控制电路61需要较少的操作，电机的电流供应周期缩短，并且抑制发热。
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公开(公告)号：US20240042869A1
公开(公告)日：2024-02-08
申请号：US18492104
申请日：2023-10-23
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Seiji NAKAYAMA , Shigeru KAMIO
CPC classification number: B60L15/20 , F16H63/3466 , F16H59/50 , F16H59/66 , F16H63/38 , F16H2059/663
Abstract: A vehicle control device includes an actuator drive control section that controls drive of an actuator, a main motor drive control section that controls drive of a main motor, and a stagnation determination section. The stagnation determination section determines a stagnation of the actuator based on a detected value of a sensor unit that detects a physical quantity that changes according to a drive state of the actuator. When performing a meshing surface pressure reduction control for reducing a meshing surface pressure generated at the meshing point between a parking gear and a parking lever by driving the main motor, the main motor drive control section decreases a main motor torque which is a torque of the main motor based on the detected value of the sensor unit.
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公开(公告)号：US20170104435A1
公开(公告)日：2017-04-13
申请号：US15284978
申请日：2016-10-04
Applicant: DENSO CORPORATION
Inventor： Hiromitsu NAGATA , Seiji NAKAYAMA
IPC: H02P29/024 , G05B23/02 , H02P6/14 , F16H61/12 , F16H61/32
CPC classification number: H02P29/024 , F16H61/12 , F16H61/32 , F16H2061/1268 , F16H2061/1284 , F16H2061/326 , G05B23/0275 , H02P6/14 , H02P29/0241
Abstract: An integrated IC provided in an SBW-ECU has plural functions such as a receiving function of receiving output signals of an encoder and a current supply function of supplying current to each phase of the motor. A microcomputer checks individually whether the signal receiving function and the current supply function are potentially abnormal and checks whether the integrated IC is abnormal based on the check results about the signal receiving function and the current supply function. For example, when it is determined that only the signal receiving function of the integrated IC is potentially abnormal, the encoder is determined to be abnormal. When it is determined that the signal receiving function and the current supply function of the integrated IC are both potentially abnormal, the integrated IC is determined to be abnormal.
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公开(公告)号：US20160084348A1
公开(公告)日：2016-03-24
申请号：US14861365
申请日：2015-09-22
Applicant: DENSO CORPORATION
Inventor： Toru TABUCHI , Seiji NAKAYAMA
IPC: F16H1/32
CPC classification number: F16H1/32 , F16H55/08 , F16H2001/325 , F16H2055/0893
Abstract: Each of gear teeth of an external gear has a tooth-bottom portion, a tooth-middle portion and a tooth-front portion. The tooth-middle portion is operatively engaged with an internal gear. A cross-sectional shape of the tooth-bottom portion is formed by a hypocycloid curved line. A cross-sectional shape of the tooth-middle portion is formed by an epicycloid curved line. A cross-sectional shape of the tooth-front portion is formed by a first predetermined curved line, which is located at a position closer to a first pitch circle of the external gear in a radial-inward direction from a reference epicycloid curved line. The reference epicycloid curved line is continuously connected to each of the curved lines of the tooth-middle portion at both circumferential sides of each gear tooth. As a result, the tooth-front portion is so formed that a part of the tooth-front portion is escaped in the radial-inward direction from the reference epicycloid curved line.
Abstract translation: 外齿轮的齿轮齿分别具有齿底部，齿中间部和齿前部。 齿中间部分与内部齿轮可操作地接合。 齿底部的横截面形状由下摆形曲线形成。 齿 - 中间部分的横截面形状由外绕线曲线形成。 齿前部的截面形状由第一预定曲线形成，该第一预定曲线位于比基准外绕线曲线在径向向内方向更靠近外齿轮的第一节圆的位置。 参考外周线曲线在每个齿轮齿的两个圆周侧连续地连接到齿 - 中间部分的每个曲线。 结果，齿前部形成为使得齿前部的一部分从基准外绕线曲线沿径向向内的方向逃逸。
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Patent Agency Ranking
公开(公告)号：US20160061240A1
公开(公告)日：2016-03-03
申请号：US14824254
申请日：2015-08-12
Applicant: DENSO CORPORATION
Inventor： Tomohiro TAKAHASHI , Seiji NAKAYAMA
CPC classification number: F16B5/0275 , F16B41/005
Abstract: A stud bolt has a first thread portion, a second thread portion, an engagement portion and a large diameter portion. The first thread portion is screwable into a first member about a screw axis. The second thread portion is screwable into a second member about the screw axis and is provided coaxially with the first thread portion. The engagement portion is provided on a side of the second thread portion, which is opposite from the first thread portion. The large diameter portion has a circular cross-section perpendicular to the screw axis. The large diameter portion is located between the first thread portion and the second thread portion. An outer diameter of the large diameter portion is larger than an outer diameter of the first thread portion and the outer diameter of the second thread portion.
Abstract translation: 双头螺栓具有第一螺纹部分，第二螺纹部分，接合部分和大直径部分。 第一螺纹部分围绕螺杆轴线可旋转到第一构件中。 第二螺纹部分围绕螺杆轴线可旋转到第二构件中并与第一螺纹部分同轴地设置。 接合部设置在与第一螺纹部相反的第二螺纹部的一侧。 大直径部分具有垂直于螺杆轴线的圆形横截面。 大直径部分位于第一螺纹部分和第二螺纹部分之间。 大直径部分的外径大于第一螺纹部分的外径和第二螺纹部分的外径。
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公开(公告)号：US20240067142A1
公开(公告)日：2024-02-29
申请号：US18493427
申请日：2023-10-24
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Seiji NAKAYAMA , Shigeru KAMIO , Takuji NAKAMURA
CPC classification number: B60T8/171 , B60T17/221 , B60T1/005 , B60T2201/10 , B60T2270/89
Abstract: A vehicle control device includes: an actuator drive controller configured to control a drive of an actuator; a main motor drive controller configured to control a drive of a main motor; and a stuck determiner. The stuck determiner determines a stuck of the actuator based on a detection value of a sensor unit that detects a physical quantity changed according to a drive state of the actuator. The main motor drive controller is configured to perform an engaging surface pressure reduction control for reducing an engaging surface pressure between a parking gear and a parking lever by driving the main motor, when the stuck determiner determines that the actuator is stuck in releasing a parking lock of the vehicle.
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公开(公告)号：US20240059155A1
公开(公告)日：2024-02-22
申请号：US18493405
申请日：2023-10-24
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Shigeru KAMIO , Seiji NAKAYAMA
CPC classification number: B60L15/20 , F16H63/3466 , F16H59/52 , F16H59/70 , F16H59/66 , F16H2059/663
Abstract: A vehicle control device controls a vehicle drive system including a main motor as a drive source of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive control section that controls a drive of the actuator, a main motor drive control section that controls a drive of the main motor, and a range determination unit that determines whether or not a shift range is a parking range. When releasing the parking lock, if the parking range is not released within a parking range release determination time that is variable according to an operating environment, the main motor drive control section performs a meshing surface pressure reduction control for driving the main motor so as to reduce a meshing surface pressure between a parking gear and a parking lever.
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公开(公告)号：US20240042849A1
公开(公告)日：2024-02-08
申请号：US18491412
申请日：2023-10-20
Applicant: DENSO CORPORATION
Inventor： Akihiro HARADA , Seiji NAKAYAMA , Shigeru KAMIO
IPC: B60K26/02
CPC classification number: B60K26/02
Abstract: A vehicle control device controls a vehicle drive system having a main motor serving as a source of drive power of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive controller that controls drive of the actuator, and a main motor drive controller that controls drive of the main motor. When a parking lock of the vehicle cannot be released by the actuator due to an engaging surface pressure between a parking gear and a parking lever, the main motor drive controller performs an engaging surface pressure reduction control in which an engaging surface pressure is reduced by driving the main motor to cause an increase of a torque of the main motor by a set increase speed.
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公开(公告)号：US20220294371A1
公开(公告)日：2022-09-15
申请号：US17828444
申请日：2022-05-31
Applicant: DENSO CORPORATION
Inventor： Daisuke YAMAMOTO , Seiji NAKAYAMA , Jun YAMADA , Kouji SAKAGUCHI
Abstract: A motor control device controls a drive of a motor in a motor drive system including the motor and a detent mechanism. The detent mechanism has a detent member that rotates integrally with an output shaft to which the rotation of the motor is transmitted, and an engaging member that moves a valley portion by a rotation of the motor and positions the output shaft by stopping within a positioning range. The motor control device includes a positioning determination unit and an energization control unit. The positioning determination unit determines whether or not the engaging member is stopped within the positioning range based on control parameter other than a detection value of a motor rotation angle sensor that detects a motor rotation angle. When the energization control unit determines that the engaging member is stopped within the positioning range, the energization control unit turns off the energization of the motor.
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