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公开(公告)号：US20240239331A1
公开(公告)日：2024-07-18
申请号：US18599795
申请日：2024-03-08
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO , Haibo LIU , Keisuke KAWAI , Tatsuya TAKAGI , Sadahiro AKAMA , Harumi HORIHATA , Masaru KUBOTA , Youichi KUROYANAGI
IPC: B60W30/045 , B60W10/08 , B60W10/18 , B60W30/18 , B60W30/188
CPC classification number: B60W30/045 , B60W10/08 , B60W10/18 , B60W30/18036 , B60W30/18109 , B60W30/188 , B60W2510/20 , B60W2520/14 , B60W2520/28 , B60W2520/30 , B60W2710/083 , B60W2710/18 , B60W2710/20 , B60W2720/14 , B60W2720/28 , B60W2720/30
Abstract: A mobile object includes: a first braking/driving torque application unit that applies first braking/driving torque to a right driving wheel; a second braking/driving torque application unit that applies second braking/driving torque to a left driving wheel; a right driven wheel and a left driven wheel each of which is constituted of a caster wheel; and a control unit that controls the first braking/driving torque application unit and the second braking/driving torque application unit. Moreover, the control unit is configured to perform turning, advancing/reversing and braking of the mobile object by controlling the first braking/driving torque and the second braking/driving torque or by controlling rotational speed of the right driving wheel and rotational speed of the left driving wheel.
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公开(公告)号：US20240239208A1
公开(公告)日：2024-07-18
申请号：US18620236
申请日：2024-03-28
Applicant: DENSO CORPORATION
Inventor： Shigeru KAMIO , Haibo LIU , Keisuke KAWAI , Tatsuya TAKAGI , Sadahiro AKAMA , Harumi HORIHATA , Masaru KUBOTA , Youichi KUROYANAGI
CPC classification number: B60L15/2036 , B60K1/02 , B60L2240/22 , B60L2240/461 , B60L2240/647
Abstract: This vehicle comprises a first dynamo-electric machine that imparts torque to a first drive wheel, a second dynamo-electric machine that applies torque to a second drive wheel, a rotation speed sensor that acquires a first rotation speed of the first drive wheel, a rotation speed sensor that acquires a second rotation speed of the second drive wheel, and a control device. The control device includes a basic setting unit that sets a basic rotation speed, a differential setting unit that sets a differential rotation speed, and an action control unit that controls the operation of the first dynamo-electric machine and the second dynamo-electric machine so that an average value of the first rotation speed and the second rotation speed becomes the basic rotation speed, and a difference between the first rotation speed and the second rotation speed reaches the differential rotation speed.
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公开(公告)号：US20240159510A1
公开(公告)日：2024-05-16
申请号：US18418572
申请日：2024-01-22
Applicant: DENSO CORPORATION
Inventor： Ryoya HASHIZUME , Harumi HORIHATA
Abstract: A rotational angle measurement apparatus is applicable to a rotary electric machine that includes an outer rotor rotatable around a predetermined reference axis, and a stator disposed radially inside the outer rotor. The rotational angle measurement apparatus includes at least one measurement portion mounted to the outer rotor, and a measuring member located radially outside the stator to face the at least one measurement portion. The measuring member is configured to measure a position of the at least one measurement portion.
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公开(公告)号：US20240388119A1
公开(公告)日：2024-11-21
申请号：US18784091
申请日：2024-07-25
Applicant: DENSO CORPORATION
Inventor： Hiroshi SHIMIZU , Harumi HORIHATA , Sadahiro AKAMA
Abstract: A discharge circuit discharges a smoothing capacitor that smooths a DC voltage. The discharge circuit incudes a resistive element connected in parallel with the smoothing capacitor, a transistor connected in series with the resistive element, and an adjustment circuit configured to adjust a voltage applied to a gate terminal of the transistor to turn and keep the transistor half on for a predefined time and then turn the transistor fully on, when discharging the smoothing capacitor through the resistive element and the transistor.
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公开(公告)号：US20240380310A1
公开(公告)日：2024-11-14
申请号：US18783963
申请日：2024-07-25
Applicant: DENSO CORPORATION
Inventor： Hiroshi SHIMIZU , Harumi HORIHATA , Sadahiro AKAMA
Abstract: A discharge circuit discharges a smoothing capacitor that smooths a DC voltage through a plurality of resistive elements mounted on a substrate. The discharge circuit includes a series connection of at least three resistive elements spaced apart from each other in a first direction and connected in series by wires. The resistive element positioned more centrally in the first direction, included in the series connection, has a lower resistance value. The resistive elements adjacent to each other in the first direction and included in the series connection are displaced from each other in a second direction perpendicular to the first direction.
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Patent Agency Ranking
公开(公告)号：US20240157810A1
公开(公告)日：2024-05-16
申请号：US18418896
申请日：2024-01-22
Applicant: DENSO CORPORATION
Inventor： Harumi HORIHATA , Shinichi OKADA
IPC: B60L15/20 , H02P27/06 , H02P29/032
CPC classification number: B60L15/20 , H02P27/06 , H02P29/032 , B60L2240/12 , B60L2240/425 , B60L2240/427 , B60L2240/429 , B60L2240/441 , B60L2240/443 , B60L2240/642
Abstract: A control apparatus includes: a control unit that controls torque of a rotating electric machine by performing switching control of an inverter; a temperature sensor that detects a temperature of a temperature detection target which is at least one of the machine and the inverter; and a current sensor that detects electric current flowing through the temperature detection target and has higher responsiveness than the temperature sensor. The control unit includes an overheat protection unit that limits the torque of the machine when the temperature detection target is in an overheated state. The overheat protection unit determines whether the temperature detection target is in the overheated state based on the temperature detected by the temperature sensor when an operating point of the machine is within a continuous operation region, and based on the electric current detected by the current sensor when the operating point is within a short-time operation region.
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公开(公告)号：US20250004005A1
公开(公告)日：2025-01-02
申请号：US18828181
申请日：2024-09-09
Applicant: DENSO CORPORATION
Inventor： Harumi HORIHATA , Kazuya ENOKIZONO , Sadahiro AKAMA , Tetsuya OHMI , Yoshihiro KIDA
IPC: G01P3/48
Abstract: A vehicular device includes a bearing, an annular detection target, a planar receiving coil extending in a direction intersecting an axial direction of the bearing and provided at a position facing the detection target in the axial direction in a state of not contacting the detection target, and an excitation coil to which an AC excitation voltage is supplied. The detection target is provided to rotate with the rotation of the wheel of the vehicle. When an excitation voltage is supplied to the excitation coil, a voltage is induced in the receiving coil. The vehicular device includes a parameter calculation section for calculating a rotational speed of the wheel based the output voltage signal from the receiving coil.
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公开(公告)号：US20240426345A1
公开(公告)日：2024-12-26
申请号：US18828215
申请日：2024-09-09
Applicant: DENSO CORPORATION
Inventor： Yoshihiro KIDA , Takanobu KAWANO , Yusuke KIMURA , Sadahiro AKAMA , Harumi HORIHATA , Tetsuya OHMI , Yasuhiro KITAURA , Atsushi KOBAYASHI , Teppei MORIKAWA
IPC: F16C41/00 , F16C19/08 , G01B11/275
Abstract: A detection device for vehicles includes a base section fixed to a body of a vehicle, and a bearing having an outer ring member, an inner ring member, and rolling elements, which rotatably supports a wheel of the vehicle against the base section. A first bearing member of the outer ring member and the inner ring member is fixed to the wheel, and a second bearing member of the outer ring member and the inner ring member is fixed to the base section. The detection device includes a disk-shaped rotating section for detection that extends radially outward of the bearing with respect to the first bearing member, and a displacement detection section that outputs a signal in response to an axial displacement of the rotating section for detection.
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公开(公告)号：US20240154561A1
公开(公告)日：2024-05-09
申请号：US18403021
申请日：2024-01-03
Applicant: DENSO CORPORATION
Inventor： Harumi HORIHATA , Yasuaki AOKI , Takahiro WATANABE
IPC: H02P27/08 , H02P25/022 , H02P101/45
CPC classification number: H02P27/08 , H02P25/022 , H02P2101/45
Abstract: An inverter control device is for a vehicle including: a rotating electric machine that is an in-wheel motor integrated inside a drive wheel and includes a rotor including a magnet portion with a plurality of magnetic poles and a stator including multiphase stator windings without teeth protruding radially toward the rotor; and an inverter electrically connected to the rotating electric machine. The inverter control device includes: a control unit configured to perform PWM control to generate a drive signal for a switching element in the inverter based on a carrier signal and a command voltage in each phase in the overall operating region for an operating point defined by the rotation speed and the torque of the rotating electric machine; and an operation unit configured to operate the switching element based on the generated drive signal.
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公开(公告)号：US20250003453A1
公开(公告)日：2025-01-02
申请号：US18828967
申请日：2024-09-09
Applicant: DENSO CORPORATION
Inventor： Yoshihiro KIDA , Takanobu KAWANO , Yusuke KIMURA , Sadahiro AKAMA , Harumi HORIHATA , Tetsuya OHMI , Yasuhiro KITAURA , Atsushi KOBAYASHI , Teppei MORIKAWA , Akihiro HANDA
Abstract: A detection apparatus includes a base part, a bearing, a discoid rotating part for detection, and a displacement detection unit. The bearing has a first bearing member fixed to a rotating object, and a second bearing member fixed to the base part. The rotating part for detection is provided so as to rotate together with the first bearing member and extends radially outward of the bearing with respect to the first bearing member. The displacement detection unit is provided at a position in the base part which is radially away from the bearing and faces the rotating part for detection in an axial direction of the bearing. Moreover, the displacement detection unit is configured to output a voltage signal according to displacement of the rotating part for detection in the axial direction and displacement of the rotating part for detection in a direction perpendicular to the axial direction.
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