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公开(公告)号：US20230339537A1
公开(公告)日：2023-10-26
申请号：US18304666
申请日：2023-04-21
发明人： Yosuke YAMASHITA , Masaharu YAMASHITA , Kenji SHIBATA , Koichi NISHIMURA , Takahito ISHINO , Toru TAKASHIMA , Shintaro TAKAYAMA , Yuji FUJITA , Koji ANRAKU , Kenichi ABE
摘要： A steering control device is configured to control a steering device that changes a transmission ratio between an operation angle of an operation member and a steering angle of a steerable wheel. The steering control device includes: communication lines for transmitting vehicle speed information; and calculators communicably connected to each other and individually connected to the communication lines. Each calculator calculates the transmission ratio based on the vehicle speed information received via a corresponding one of the communication lines and determines whether the received vehicle speed information is valid. When at least one of the calculators determines that the vehicle speed information is not valid, each calculator changes control for calculating the transmission ratio from a vehicle-speed responsive control in which the transmission ratio is calculated based on the vehicle speed information to a specific control in which the transmission ratio is calculated not based on the vehicle speed information.
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公开(公告)号：US20180147908A1
公开(公告)日：2018-05-31
申请号：US15821427
申请日：2017-11-22
IPC分类号： B60G17/016
CPC分类号： B60G17/0162 , B60G17/0182 , B60G17/0195 , B60G2202/42 , B60G2204/419 , B60G2300/122 , B60G2300/45 , B60G2400/0511 , B60G2400/204 , B60G2400/302 , B60G2400/34 , B60G2400/41 , B60G2400/63 , B60G2401/28 , B60G2800/012 , B60G2800/24 , B60G2800/70 , B60G2800/916 , B62D61/065
摘要： An automatic tilting vehicle comprises left and right front wheels and a rear wheel. A control unit controls a vehicle tilting device so that the tilt angle of the vehicle becomes the target tilt angle. The control device is configured to swingingly vibrates the vehicle in the lateral direction by tilting the vehicle by the vehicle tilting device, to estimate a height of the center of gravity of the vehicle based on a resonance period of swinging vibration of the vehicle, and to correct the target tilt angle such that a perpendicular passing through the estimated center of gravity passes within a range of a triangle formed by connecting grounding points of the left and right front wheels and a grounding point of the rear wheel.
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公开(公告)号：US20200180681A1
公开(公告)日：2020-06-11
申请号：US16597415
申请日：2019-10-09
摘要： A vehicle of a steer-by-wire type includes a steering wheel and a turning device configured to turn a wheel. A control device for the vehicle is configured to: calculate a target turn angle being represented as a function of a steering angle of the steering wheel, and control the turning device such that a turn angle of the wheel becomes the target turn angle; receive driver-specified information indicating a specified maximum steering angle that is a maximum value of the steering angle specified by a driver of the vehicle; and flexibly set the function such that the target turn angle calculated according to the specified maximum steering angle is equal to a predetermined maximum turn angle.
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公开(公告)号：US20180134336A1
公开(公告)日：2018-05-17
申请号：US15810812
申请日：2017-11-13
发明人： Hayato YOSHINO , Takahito ISHINO , Koichi NISHIMURA , Yoshikazu KAMEDA , Mitsuyuki OHUCHI , Osamu YASUIKE , Hirotaka KAMANO
CPC分类号： B62K11/007 , B62D9/02 , B62K5/05 , B62K5/08 , B62K5/10 , B62K2207/02 , B62K2207/04
摘要： An automatic tilting vehicle includes left and right wheels rotatably supported by carriers, a vehicle tilting device, and a control unit. The vehicle tilting device includes a swing member swinging about a swing axis, an actuator that swings the swing member, a pair of tie rods pivotally connected to the swing member and the carriers. The control unit controls the actuator so that the tilt angle of the vehicle conforms to a target tilt angle and determines that the vehicle tilting device is abnormal when a relationship between the swing angular velocity of the swing member and the tilt angular velocity of the vehicle deviates from an allowable range.
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公开(公告)号：US20240286673A1
公开(公告)日：2024-08-29
申请号：US18585894
申请日：2024-02-23
发明人： Hajime KAMIMAE , Yoshio KUDO , Tomoyuki IIDA , Yuko GOTO , Takahito ISHINO , Atsushi ISHIHARA , Junya MIYAKE
摘要： A reaction force actuator applies, during normal operation, a steering reaction force, which rapidly increases upon approaching an upper limit of a virtual steering range, to a steering wheel. During rapid steering in which a turning angle velocity is greater than or equal to a predetermined value and a turning follow delay is greater than or equal to a predetermined value, the reaction force actuator applies a steering reaction force to the steering wheel based on an upper limit corresponding to a narrower virtual steering range.
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公开(公告)号：US20190322271A1
公开(公告)日：2019-10-24
申请号：US16390723
申请日：2019-04-22
发明人： Takahito ISHINO
IPC分类号： B60W30/04 , B62D9/00 , B62D61/06 , B62D6/08 , B62D11/00 , B60T8/24 , B62D9/02 , B60W10/04 , B60W10/184 , B60W10/20 , B60T8/17
摘要： An automatic tilting vehicle includes a pair of wheels that are non-steering driving wheels, a braking/driving device, a vehicle tilting device, and a control device, and the control unit calculates a target tilt angle of the vehicle for tilting the vehicle turning inward and controls the vehicle tilting device so that a tilt angle of the vehicle becomes the target tilt angle. The control unit calculates target braking/driving forces of the pair of wheels based on a braking/driving operation of a driver, corrects the target braking/driving forces so that a difference between vertical forces acting on the wheels caused by the braking/driving forces of the pair of wheels is reduced, and controls the braking/driving device such that braking/driving forces of the pair of wheels becomes the corrected target braking/driving forces.
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公开(公告)号：US20230219618A1
公开(公告)日：2023-07-13
申请号：US18067487
申请日：2022-12-16
发明人： Takahito ISHINO , Masaharu YAMASHITA , Kenji SHIBATA , Yosuke YAMASHITA , Shintaro TAKAYAMA , Kazuaki IIDA , Ryo YAMAZAKI , Yuuta KAJISAWA , Kenichi ABE , Toyohiro HAYASHI , Nobuyori NAKAJIMA , Hiroyasu OTAKE , Kurumi TAZUKE , Hiroki TOMIZAWA
CPC分类号： B62D5/0496 , B62D5/046 , H02P29/68 , H02P23/14
摘要： A steer-by-wire steering system including a steering device including a steering motor and a controller configured to supply a steering current to the steering motor based on a steering request. The controller includes a plurality of microcomputers, a plurality of drive circuits, and a plurality of temperature sensors. When a detection temperature difference that is a difference between detection temperatures of any two of the plurality of temperature sensors is greater than a predetermined threshold, each of the plurality of microcomputers executes an independent calculation control to independently calculate and set a current limit value, which is an upper limit value of the steering current, based on a detection temperature of one of the plurality of temperature sensors corresponding to itself, irrespective of detection temperatures of one or more of the plurality of temperature sensors other than the one of the plurality of temperature sensors corresponding to itself.
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公开(公告)号：US20220289205A1
公开(公告)日：2022-09-15
申请号：US17683610
申请日：2022-03-01
IPC分类号： B60W40/105 , B60W10/20
摘要： A vehicle speed calculating device includes a vehicle speed calculating unit configured to calculate a control vehicle speed that is acquired by estimating a vehicle body speed that is a speed at which a vehicle is actually traveling, as a state variable used to control an onboard device configured to operate to realize various functions provided in the vehicle. The vehicle speed calculating unit is configured to include an extraction function of extracting at least one wheel speed acquired from at least one wheel that is assumed to be rotating in a state in which an influence causing a difference from the vehicle body speed is likely to be small, out of wheel speeds of a plurality of wheels, and a calculation function of calculating the control vehicle speed based on the at least one wheel speed extracted by the extraction function.
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