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公开(公告)号：US20150210310A1
公开(公告)日：2015-07-30
申请号：US14419327
申请日：2013-07-31
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hisaya Akatsuka , Daiji Watanabe , Motoaki Kataoka , Yoshio Kudo , Yoshiaki Suzuki
CPC classification number: B62D5/0463 , B62D5/04 , B62D5/0472 , B62D6/00 , B62D6/04 , B62D6/10
Abstract: An electric power steering system includes a basic assist amount calculation section calculating a basic assist amount for assisting the manipulation of a steering wheel, and an assist compensation amount calculation section calculating an assist compensation amount for correcting the basic assist amount. The system includes an assist amount correction section calculating a corrected assist amount by correcting the basic assist amount based on the assist compensation amount, and a motor drive section driving a motor using the corrected assist amount. The assist compensation amount calculation section uses a reverse input specification that more transmits the signal components of specific frequency in road-surface input torque, to a steering wheel than in the case of using only the basic assist amount, and calculates the assist compensation amount suitable for a vehicle-state value, such as a steering torque, to suppress variation in the transmission characteristics due to variation of the vehicle-state value.
Abstract translation: 电动助力转向系统包括：计算用于辅助方向盘操作的基本辅助量的基本辅助量计算部分，以及计算用于校正基本辅助量的辅助补偿量的辅助补偿量计算部。 该系统包括辅助量校正部，其通过基于辅助补偿量校正基本辅助量来计算校正辅助量;以及马达驱动部，其使用校正后的辅助量来驱动马达。 辅助补偿量计算部使用与仅使用基本辅助量的情况相比，在路面输入转矩中更多地将方向盘的特定频率的信号分量更多地发送的反向输入规格，并且计算适合的辅助补偿量 对于诸如转向扭矩的车辆状态值来抑制由车辆状态值的变化引起的传动特性的变化。
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公开(公告)号：US10589777B2
公开(公告)日：2020-03-17
申请号：US15685769
申请日：2017-08-24
Applicant: DENSO CORPORATION
Inventor： Yosuke Hirate , Daiji Watanabe , Hisaya Akatsuka
Abstract: A motor controller of a steering control apparatus is configured to drive, based on an assist command and a tracking command, a motor to thereby generate assist torque and automatic steering torque. A state determiner of the steering control apparatus is configured to determine at least whether a driver's steering state is a biased steering state or a return steering state in accordance with a first parameter associated with steering torque based on the driver's steering, and a second parameter associated with an angular velocity of the motor. A ratio changer of the steering control apparatus is configured to change a ratio of the assist torque to the automatic steering torque in accordance with a determination result of the state determiner.
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公开(公告)号：US09764758B2
公开(公告)日：2017-09-19
申请号：US14419327
申请日：2013-07-31
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hisaya Akatsuka , Daiji Watanabe , Motoaki Kataoka , Yoshio Kudo , Yoshiaki Suzuki
CPC classification number: B62D5/0463 , B62D5/04 , B62D5/0472 , B62D6/00 , B62D6/04 , B62D6/10
Abstract: An electric power steering system includes a basic assist amount calculation section calculating a basic assist amount for assisting the manipulation of a steering wheel, and an assist compensation amount calculation section calculating an assist compensation amount for correcting the basic assist amount. The system includes an assist amount correction section calculating a corrected assist amount by correcting the basic assist amount based on the assist compensation amount, and a motor drive section driving a motor using the corrected assist amount. The assist compensation amount calculation section uses a reverse input specification that more transmits the signal components of specific frequency in road-surface input torque, to a steering wheel than in the case of using only the basic assist amount, and calculates the assist compensation amount suitable for a vehicle-state value, such as a steering torque, to suppress variation in the transmission characteristics due to variation of the vehicle-state value.
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公开(公告)号：US11312391B2
公开(公告)日：2022-04-26
申请号：US16850554
申请日：2020-04-16
Applicant: DENSO CORPORATION
Inventor： Yousuke Hirate , Daiji Watanabe
Abstract: A display apparatus mounted on a vehicle may comprise: a display device that is placed in a vehicle compartment of a vehicle configured to perform a cooperative driving mode in which a manual operation by a driver and an autonomous operation by an autonomous driving function cooperate with each other to control a driving of the vehicle; an acquisition section that is configured to acquire a degree of restriction applied to an autonomous operation torque controlled by the autonomous driving function in the cooperative driving mode in response to set of the degree of restriction according to a manual operation amount input by the driver; and a display control device that causes the display device to display a cooperative ratio of the manual operation and the autonomous operation in the cooperative driving mode based on the degree of restriction.
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公开(公告)号：US10745046B2
公开(公告)日：2020-08-18
申请号：US15959655
申请日：2018-04-23
Applicant: DENSO CORPORATION
Inventor： Yosuke Hirate , Daiji Watanabe , Hisaya Akatsuka , Toshiya Kabayama
Abstract: A steering assist apparatus is provided with a steering drive unit driving a steering apparatus, a steering control unit executing an automatic steering mode where a steering drive unit is controlled such that a turning angle is determined based on at least either a running state of the vehicle or road information to produce the determined turning angle, and a target differential angle control unit determining a target differential angle. The target differential angle control unit determines the target differential angle to be close to an automatic steering target differential angle used for the automatic steering mode, when input variation through a steering input apparatus is not detected during a transition period from a manual steering mode where the steering apparatus operates in response to the steering angle inputted through the steering input apparatus to the automatic steering mode or during an elapsed period after completing the transition period.
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Patent Agency Ranking
公开(公告)号：US10654519B2
公开(公告)日：2020-05-19
申请号：US15958507
申请日：2018-04-20
Applicant: DENSO CORPORATION
Inventor： Yosuke Hirate , Daiji Watanabe , Hisaya Akatsuka , Toshiya Kabayama
Abstract: In a steering assistance apparatus mounted in a vehicle, a steering input device and a turning device differentiate at a transmission ratio that is a ratio of an amount of change in the turning angle to an amount of change in the steering angle. A turning device actuator actuates the turning device. A controller executes an automatic steering mode, in which the controller determines the turning angle based on at least one of a travel condition and travel path information of the vehicle and controls the turning device actuator so as to achieve the determined turning angle. If detecting an input variation from the steering input device during execution of the automatic steering mode, the controller changes the transmission ratio to a value less than the transmission ratio in the automatic steering mode and prioritizes a manual steering mode over the automatic steering mode.
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公开(公告)号：US10435024B2
公开(公告)日：2019-10-08
申请号：US15653343
申请日：2017-07-18
Applicant: DENSO CORPORATION
Inventor： Hisaya Akatsuka , Daiji Watanabe
Abstract: A driving support apparatus performing a plurality of driving support includes: a reliability acquiring unit that acquires each reliability of a plurality of detection apparatus, the reliability representing likelihood of a detection result of the detection apparatus; a determination unit that determines whether or not each of the detection apparatus is a high reliability apparatus determined based on a reliability threshold; a correspondence acquiring unit that acquires correspondence information representing a correspondence between combinations of the plurality of detection apparatus including information of whether or not each apparatus is a high reliability apparatus, and types of driving support to be performed; a setting unit that sets a driving support to be performed, based on a result of the determination; an executing unit that executes the driving support to be performed; and an output unit that outputs a command to allow the executing unit to execute the driving support.
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公开(公告)号：US10399592B2
公开(公告)日：2019-09-03
申请号：US15644130
申请日：2017-07-07
Applicant: DENSO CORPORATION
Inventor： Hisaya Akatsuka , Daiji Watanabe
Abstract: In a drive assist system, a map data acquiring section acquires at least one of a driver's operation ability and a load of a vehicle. An adjustment section determines an assist control amount as a control parameter of drive assist for the vehicle so that a degree of the driver's operation is increased according to reduction of the driver's operation ability or increasing of the load of the vehicle. An assist control amount calculation section transmits the assist control amount to a steering motor and a notification section so as to execute the drive assist for the vehicle.
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公开(公告)号：US20180065657A1
公开(公告)日：2018-03-08
申请号：US15685769
申请日：2017-08-24
Applicant: DENSO CORPORATION
Inventor： Yosuke Hirate , Daiji Watanabe , Hisaya Akatsuka
Abstract: A motor controller of a steering control apparatus is configured to drive, based on an assist command and a tracking command, a motor to thereby generate assist torque and automatic steering torque. A state determiner of the steering control apparatus is configured to determine at least whether a driver's steering state is a biased steering state or a return steering state in accordance with a first parameter associated with steering torque based on the driver's steering, and a second parameter associated with an angular velocity of the motor. A ratio changer of the steering control apparatus is configured to change a ratio of the assist torque to the automatic steering torque in accordance with a determination result of the state determiner.
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公开(公告)号：US11299203B2
公开(公告)日：2022-04-12
申请号：US16007228
申请日：2018-06-13
Applicant: DENSO CORPORATION
Inventor： Shun Shimizu , Yosuke Hirate , Daiji Watanabe , Toshiya Kabayama , Hisaya Akatsuka
Abstract: In a cruise assist system, a turning angle controller executes at least one of an automatic cruise control task that automatically controls a turning angle of the vehicle, and an assist control task that controls the turning angle of the vehicle in accordance with an occupant's operation of the steering wheel. A holding determiner includes an input detector detecting an occupant's physical input to a steering shaft via a steering wheel based on at least one of a first type physical quantity and second type physical quantities. Each of the first and second physical quantities depends on rotational movement of the steering shaft. The first type physical quantity contains the occupant's physical input, and a disturbance input, which is different therefrom, to the steering shaft. The second type physical quantities have a physical relationship therebetween, which is changed depending on the occupant's physical input.
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