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公开(公告)号：US20180304921A1
公开(公告)日：2018-10-25
申请号：US15958825
申请日：2018-04-20
Applicant: DENSO CORPORATION
Inventor： Yosuke HIRATE , Daiji WATANABE , Hisaya AKATSUKA , Toshiya KABAYAMA
CPC classification number: B62D6/003 , B62D3/12 , B62D5/008 , B62D5/0463 , B62D15/022 , B62D15/025 , G05D1/0212
Abstract: A steering assist apparatus on a vehicle is provided, including a steering drive unit that drives a steering apparatus; a steering control unit that executes an automatic steering mode in which the 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 accomplish the determined turning angle; and a transmission ratio determining unit that determines, based on at least either a running state of the vehicle or the road information, a first transmission ratio in the automatic steering mode to be a value different from a second transmission ratio in a manual steering mode in which the steering apparatus operates in accordance with the steering angle inputted via a steering input apparatus.
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Patent Agency Ranking
公开(公告)号：US20180304920A1
公开(公告)日：2018-10-25
申请号：US15958507
申请日：2018-04-20
Applicant: DENSO CORPORATION
Inventor： Yosuke HIRATE , Daiji WATANABE , Hisaya AKATSUKA , Toshiya KABAYAMA
CPC classification number: B62D6/003 , B62D3/12 , B62D5/008 , B62D5/0463 , B62D15/022 , B62D15/025 , G05D1/0212
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：US20180362073A1
公开(公告)日：2018-12-20
申请号：US16007190
申请日：2018-06-13
Applicant: DENSO CORPORATION
Inventor： Yosuke HIRATE , Daiji WATANABE , Hisaya AKATSUKA
Abstract: In a vehicle, an amount of change of a turning angle of a turning mechanism to an amount of change of a steering angle of a steering input device is defined as a transfer ratio, the turning mechanism is rotationally driven by a turning drive unit, and a driver's body posture parameter is detected by a body posture parameter detector. An apparatus for steering the vehicle includes a controller that executes an automatic steering mode that determines a target value for the turning angle of the turning mechanism based on a travelling condition of the vehicle and/or information about a road on which the vehicle is travelling, and controls the turning mechanism to adjust the turning angle of the turning mechanism to the target value. A transfer ratio adjuster adjusts the transfer ratio in accordance with the body posture parameter during execution of the automatic steering mode.
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公开(公告)号：US20180022384A1
公开(公告)日：2018-01-25
申请号：US15653327
申请日：2017-07-18
Applicant: DENSO CORPORATION
Inventor： Motoaki KATAOKA , Yosuke HIRATE
CPC classification number: B62D6/10 , B62D5/0472 , B62D6/008 , B62D6/04 , G01L5/221
Abstract: A steering control apparatus controls an assistance torque outputted by a motor connected to a steering system mechanism that generates a steering torque. In the steering control apparatus, a load calculating unit estimates or detects a load acting on a steering shaft of the steering system mechanism. A target steering torque calculating unit calculates a target steering torque that is a target value of the steering torque, based on the estimated or detected load. A servo controller calculates a command value of the assistance torque such that a torque deviation that is a difference between the steering torque and the target steering torque is zero. A band correcting unit includes a band correction filter that extracts a component of a specific frequency band during a process of calculation from the load to the target steering torque, and corrects a gain of a predetermined transfer function at the extracted band.
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公开(公告)号：US20180362080A1
公开(公告)日：2018-12-20
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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公开(公告)号：US20180304922A1
公开(公告)日：2018-10-25
申请号：US15959655
申请日：2018-04-23
Applicant: DENSO CORPORATION
Inventor： Yosuke HIRATE , Daiji WATANABE , Hisaya AKATSUKA , Toshiya KABAYAMA
CPC classification number: B62D6/003 , B62D3/12 , B62D5/008 , B62D5/0463 , B62D6/007 , B62D15/022 , B62D15/025 , B62D15/0285 , G05D1/0212
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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