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公开(公告)号：US20180065659A1
公开(公告)日：2018-03-08
申请号：US15697180
申请日：2017-09-06
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI
CPC classification number: B62D5/0466 , B62D5/0409 , B62D5/0463 , B62D6/008
Abstract: In a steering control apparatus, a basic assistance torque calculating unit calculates a basic assistance torque. A return control unit calculates a return control amount to assist in returning a steering wheel to a neutral position, as a correction torque to be added to the basic assistance torque. In the return control unit, a target steering speed calculating unit calculates a target steering speed being that is a target value for a steering speed. A return control amount calculating unit calculates the return control amount such that the steering speed follows the target steering speed. A returning state determining unit determines whether the steering wheel is turning or returning. The target steering speed calculating unit gradually increases an absolute value of the target steering speed from an absolute value of the steering speed when the steering wheel is returning.
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公开(公告)号：US20180065658A1
公开(公告)日：2018-03-08
申请号：US15695944
申请日：2017-09-05
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI
CPC classification number: B62D5/0463 , B62D5/0409 , B62D5/0466 , B62D6/008
Abstract: In a steering control apparatus, a basic assistance torque calculating unit calculates a basic assistance torque. A correction torque calculating unit calculates a correction torque to be added to the basic assistance torque. In the correction torque calculating unit, a returning state determining unit determines whether a steering wheel is turning or returning. A returning speed stabilization control unit calculates a returning speed stabilization torque to stabilize a returning speed of the steering wheel, as the correction torque. The returning speed stabilization control calculates the returning speed stabilization torque such as to bring a second-order time differential value of steering wheel position-related information correlated with a steering wheel position closer to zero, and such that an absolute value of the returning speed stabilization torque when the steering wheel is returning is relatively greater than that when the steering wheel is turning.
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公开(公告)号：US20210002413A1
公开(公告)日：2021-01-07
申请号：US16886270
申请日：2020-05-28
Applicant: DENSO CORPORATION
Inventor： Hiroyuki OKUHIRA , Akira TAKAKURA , Takashi AOKI
IPC: C08G18/73 , C08G18/32 , C09J175/04
Abstract: A curable resin composition comprises a (meth)acrylic polyol, a castor oil-based polyol, and a polyisocyanate. The (meth)acrylic polyol includes a polymer having a hydroxyl value of 5 mg KOH/g or more and 150 mg KOH/g or less, a glass transition temperature of −70° C. or more and −40° C. or less, and a number average molecular weight of 500 or more and 20,000 or less, which is liquid at 25° C. An electrical component (1) comprises a sealing material (2) including a cured product of the curable resin composition.
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公开(公告)号：US20190322311A1
公开(公告)日：2019-10-24
申请号：US16384187
申请日：2019-04-15
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI
Abstract: A steering control device (ECU) comprises a base assist unit for generating a basic assist torque and a steering torque correction unit. The steering torque correction unit outputs a corrected steering torque, which is decreasingly corrected so that an absolute value becomes smaller than an absolute value of a steering torque when a viscous load is requested to be applied to a driver by decreasing the assist torque. The base assist unit includes a target steering torque calculation unit and a servo controller. The target steering torque calculation unit calculates the target steering torque based on a steering torque. The servo controller calculates the basic assist torque to cause the corrected steering torque to follow the target steering torque.
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公开(公告)号：US20180065660A1
公开(公告)日：2018-03-08
申请号：US15697197
申请日：2017-09-06
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI
CPC classification number: B62D5/0466 , B62D5/0409 , B62D5/0463 , B62D6/008
Abstract: In a return control unit, a driver steering correcting unit calculates a correction amount outputted in relation to any calculation quantity in a calculation process for a return control amount, based on a steering torque and steering wheel position-related information, such that the return control amount is maintained or increased when a steering torque is applied in a returning direction towards a neutral position of a steering wheel, and the return control amount is reduced when the steering torque of which an absolute value is equal to or greater than a predetermined critical value is applied in a turning direction away from the neutral position of the steering wheel. The steering wheel position-related information is information of which a value when the steering wheel is at the neutral position is zero and the value is positive or negative based on a steering wheel position in relation to the neutral position.
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Patent Agency Ranking
公开(公告)号：US20180009465A1
公开(公告)日：2018-01-11
申请号：US15637167
申请日：2017-06-29
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI , Daiji WATANABE
CPC classification number: B62D5/0463 , B62D1/04 , B62D5/001
Abstract: A steering control device controls an assist torque to be outputted by a motor connected to a steering system mechanism generating a steering torque. A response compensation filter performs a filter process compensating for a response in a specific frequency band with respect to a target steering torque generated by a target generation unit, and outputs a response-compensated target steering torque (Ts**). A servo controller calculates an assist torque command value (Ta*) in order for a torque deviation (ΔTs), which is a difference between the steering torque (Ts) and the response-compensated target steering torque (Ts**), to become zero. A transfer characteristic of the response compensation filter is set to suppress a mechanical resonance frequency band where a gain due to resonance of the steering system mechanism becomes large.
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公开(公告)号：US20210245796A1
公开(公告)日：2021-08-12
申请号：US17242602
申请日：2021-04-28
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI , Motoaki KATAOKA
Abstract: A steering control device performs an assist control for generating an assist command that generates an assist torque based on a steering torque. The steering control device acquires a target value of physical quantity related to a steering. The steering control device performs a tracking control for generating a tracking command that generates an automatic steering torque for causing a detection value of physical quantity to track the target value.
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公开(公告)号：US20220348253A1
公开(公告)日：2022-11-03
申请号：US17811835
申请日：2022-07-11
Applicant: DENSO CORPORATION
Inventor： Takashi AOKI
Abstract: A steering control device is configured to control steering via a steering actuator of a vehicle. The steering control device includes a condition determination unit and a steering maintenance unit. The condition determination unit is configured to determine whether a maintenance condition required to keep a steering angle at a stop control angle is satisfied, the steering angle being given by the steering actuator to a tire of the vehicle, the stop control angle being the steering angle which is to be given at a stop position where the vehicle stops traveling. The steering maintenance unit is configured to keep the steering angle at the stop control angle in a pre-stop traveling section in which the vehicle travels until the vehicle arrives at the stop position after the maintenance condition is satisfied.
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公开(公告)号：US20210009046A1
公开(公告)日：2021-01-14
申请号：US16922030
申请日：2020-07-07
Applicant: DENSO CORPORATION
Inventor： Tatsuya KAMIYA , Itaru ISHII , Tomoki TANEMURA , Takashi AOKI , Tetsuya KATOH
IPC: B60R11/00 , G01S15/931 , G01S7/521
Abstract: An ultrasonic sensor includes: an ultrasonic element provided to transmit or receive an ultrasonic wave propagating along a directional axis; and an element housing case that includes a case diaphragm having a thickness direction along the directional axis. A resonant space is defined between the case diaphragm and the ultrasonic element for the propagating wave, by housing the ultrasonic element while separating the ultrasonic element from the case diaphragm. A horn shape is defined in the element housing case in which a width of the resonant space in a direction orthogonal to the directional axis is reduced as the resonant space extends in an axial direction parallel to the directional axis.
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公开(公告)号：US20200322730A1
公开(公告)日：2020-10-08
申请号：US16837258
申请日：2020-04-01
Applicant: DENSO CORPORATION
Inventor： Tatsuya KAMIYA , Itaru ISHII , Tomoki TANEMURA , Takashi AOKI , Tetsuya KATOH
Abstract: An ultrasonic sensor includes: an element storage case including a case-side diaphragm having a thickness direction along a directional axis; and an ultrasonic element accommodated in the element storage case and spaced apart from the case-side diaphragm. The ultrasonic element includes an element-side diaphragm having the thickness direction along the directional axis and provided by a thin part of a semiconductor substrate. The semiconductor substrate is arranged to provide a closed space between the case-side diaphragm and the element-side diaphragm. The semiconductor substrate is fixed and supported by the element-storage case.
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