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公开(公告)号：US20240239312A1
公开(公告)日：2024-07-18
申请号：US18561450
申请日：2022-04-26
申请人： Hitachi Astemo, Ltd.
发明人： Takahiro ITO , Takuya USUI , Daisuke GOTO
摘要： Provided is a high-performance brake control device capable of effectively suppressing a vehicle body vibration generated during traveling on a road with a step or roughness. The brake control device includes a traveling environment estimation unit that estimates a traveling environment from a behavior of a first wheel that is any one of a plurality of wheels provided in a vehicle, and a timing calculation unit that calculates a timing at which a second wheel different from the first wheel is affected by the traveling environment, based on a vehicle speed. The plurality of wheels includes any one wheel that is controlled as for braking based on an estimation result of the traveling environment estimation unit and a calculation result of the timing calculation unit.
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公开(公告)号：US20240308579A1
公开(公告)日：2024-09-19
申请号：US18576135
申请日：2022-06-01
申请人： Hitachi Astemo, Ltd.
发明人： Shunsuke ARITOMI , Tadaharu YOKOTA , Yasuhito NAKAKUKI , Atsushi HIRATA , Takahiro ITO , Kenta MAEDA
CPC分类号： B62D6/008 , B62D5/001 , B62D5/0409 , B62D5/0421 , B62D5/046
摘要： A steer-by-wire control device according to the present invention includes a control device that controls a first motor that operates a steering wheel of a vehicle and a second motor that controls steering operation of a wheel. Before making a transition to an automatic driving mode of the vehicle, the control device applies input torque to the steering wheel by the first motor in a forward rotation direction and a backward rotation direction of rotation directions of the first motor, acquires behavior information of the steering wheel obtained by application of the input torque, and determines whether or not to estimate a control parameter of the steering wheel based on the behavior information. The behavior information includes at least one of a value of a rotation angle of a steering wheel and a value obtained by time-differentiating a rotation angle.
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公开(公告)号：US20230415775A1
公开(公告)日：2023-12-28
申请号：US18037658
申请日：2021-11-10
申请人： Hitachi Astemo, Ltd.
发明人： Kenta MAEDA , Masaru YAMASAKI , Takahiro ITO , Kentarou UENO , Shuji OHSHITA
CPC分类号： B60W60/0013 , B60W50/10 , B60W40/08 , B60W2540/18 , B60W2540/221
摘要： A vehicle integrated-control device generates internal commands that supplement insufficient external commands in an environment where external commands are insufficient and that integrally controls each actuator to improve the operational feeling of the driver and occupant ride comfort. The vehicle integrated-control device integrally controls actuators mounted in a vehicle to control the vehicle using six control axes which are front-rear, left-right, up-down, roll, pitch, and yaw control axes, and comprises a command value acquisition unit that acquires an external command corresponding to at least one and not more than six control axes for realizing a desired driving operation; a command value supplementation unit that, based on the external command, generates an internal command corresponding to a control axis other than the control axes corresponding to the external command; and an operation amount control distribution unit that controls the plurality of actuators based on the external command and the internal command.
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公开(公告)号：US20220153245A1
公开(公告)日：2022-05-19
申请号：US17439533
申请日：2020-03-18
申请人： Hitachi Astemo, Ltd.
摘要： An object of the present invention is to provide a brake control apparatus including a backup brake, which brake control apparatus makes it possible both to ensure deceleration, and to attain vehicle running stability.
The present invention includes: a front-wheel-side braking mechanism 4 that includes a front-wheel-side electric hydraulic mechanism 6, and a hydraulic circuit system, and applies braking force to front wheels 2L, and 2R; a rear-wheel-side braking mechanism 5 that applies braking on a rear wheel side; a backup brake that is actuated in accordance with a switch to the hydraulic circuit system 15 when the front-wheel-side electric hydraulic mechanism 6 fails, and applies braking force to the front wheels 2R, and 2L; and a skid determination threshold setting section 43 that sets a skid determination threshold. When the backup brake is actuated, the skid determination threshold setting section 43 sets the skid determination threshold for the rear wheels 3L, and 3R on the basis of braking force information of the backup brake.-
公开(公告)号：US20240001910A1
公开(公告)日：2024-01-04
申请号：US18039869
申请日：2021-11-10
申请人： Hitachi Astemo, Ltd.
发明人： Masaru YAMASAKI , Takahiro ITO , Kenta MAEDA , Shuji OHSHITA , Kentarou UENO
CPC分类号： B60W30/02 , B60W50/06 , B60W2540/00 , B60W2552/00 , B60W2520/18 , B60W2520/14 , B60W2520/16 , B60W2520/125
摘要： A vehicle movement control device generates a target motion vector that falls within a desired controllable range in a motion space, and integrally controls a plurality of actuators to realize a vehicle movement defined by the target motion vector, thereby improving ride comfort and operation feeling. The vehicle movement control device that controls the plurality of actuators in accordance with a travel state, the vehicle movement control device including: a vehicle movement planning unit configured to generate a target motion vector based on input travel state information; an operation amount arbitration unit configured to calculate an operation amount of each actuator based on the target motion vector; and an actuator control unit configured to control each actuator based on the operation amount, in which the vehicle movement planning unit generates the target motion vector within a controllable range in a motion space acquired from the operation amount arbitration unit.
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