-
公开(公告)号：EP4394624A1
公开(公告)日：2024-07-03
申请号：EP21956417.6
申请日：2021-09-10
发明人： LIU, Donghao , LUO, Jie , ZHANG, Yongsheng
IPC分类号： G06F18/00
摘要： This application provides a vehicle status parameter estimation method and apparatus, and relates to the field of automotive control technologies. The method includes: obtaining driving status data of a vehicle, a first process status x, and a first process covariance Q; determining a second process covariance Q(k) and a first measurement covariance R(k) based on the driving status data of the vehicle; obtaining a first measurement value yh of a vehicle sensor; and determining a vehicle status parameter of the vehicle based on the first measurement value yh, the first process status x, the first process covariance Q, the second process covariance Q(k), and the first measurement covariance R(k). In this application, in a process of estimating the vehicle status parameter, the process covariance and the measurement covariance are adaptively adjusted based on the driving status data, and then an adjusted process covariance and measurement covariance are used for a vehicle status estimation, so that estimation precision of the vehicle status parameter can be improved.
-
公开(公告)号：EP4253181A1
公开(公告)日：2023-10-04
申请号：EP20967662.6
申请日：2020-12-30
发明人： LUO, Jie , LIU, Donghao , ZHANG, Yongsheng , LING, Mingze
IPC分类号： B60W30/045 , B60L15/20
摘要： This application provides a method and an apparatus for front and rear driving torque distribution of a vehicle, and a vehicle. The method includes: determining an expected status parameter existing during steering of a vehicle based on a wheel angle of the vehicle; determining a current correction yawing moment based on an actual status parameter existing during the steering of the vehicle and the expected status parameter, where the expected status parameter is determined based on the wheel angle of the vehicle; determining a mapping relationship between a correction yawing moment and a torque distribution coefficient based on the wheel angle and acceleration information of the vehicle; determining a torque distribution coefficient of the vehicle based on the current correction yawing moment and the mapping relationship; and determining front and rear axle driving torques of the vehicle based on the torque distribution coefficient of the vehicle. This improves operation stability during steering of a vehicle and provides high applicability.
-
公开(公告)号：EP4425110A1
公开(公告)日：2024-09-04
申请号：EP21964319.4
申请日：2021-11-16
发明人： LUO, Jie , LIU, Donghao , GU, Qiang , ZHUANG, Yuzheng , ZHANG, Yongsheng
IPC分类号： G01D18/00
CPC分类号： G01D18/00
摘要： Embodiments of this application disclose a calibration method, apparatus, and system, and relate to the calibration field, to improve calibration efficiency of a new energy vehicle and an intelligent vehicle, and reduce calibration costs. A specific solution is as follows: First, an observation signal of a to-be-tested system is obtained. Next, a corresponding performance index is calculated based on the observation signal of the to-be-tested system. Then, an updated calibration parameter is obtained by using an optimization algorithm based on the performance index, a constraint condition, and at least one objective function, where the objective function indicates a function relationship between performance indexes. Finally, the updated calibration parameter is sent to a controller.
-
公开(公告)号：EP4029742A1
公开(公告)日：2022-07-20
申请号：EP20872104.3
申请日：2020-09-08
发明人： ZHANG, Yongsheng , LIU, Donghao , LIU, Xiaokang , ZHANG, Wei
摘要： A brake system (300) of a vehicle, a vehicle (400), and a control method for a brake system (300) are provided. In the brake system (300), a first control valve (130) is used to connect a first brake pipe (111) and a second brake pipe (121), so that when the first control valve (130) is in a closed state, the first brake pipe (111) is connected to the second brake pipe (121), and brake fluid in the two brake pipes (111 and 121) can flow in the two brake pipes, thereby helping improve redundancy performance of the brake system (300).
-
公开(公告)号：EP4206005A1
公开(公告)日：2023-07-05
申请号：EP20954461.8
申请日：2020-09-23
发明人： JIN, Biao , ZHANG, Yongsheng , LIU, Donghao
IPC分类号： B60G17/016
摘要： A suspension control method is provided. The suspension control method includes: determining that a vehicle performs steering; and adjusting a deformation parameter of a suspension in response to the determining of the steering, to adjust a traveling direction of the vehicle. Further, a suspension control apparatus, a computer program storage medium, a chip, and a vehicle are provided. When the vehicle performs steering, the traveling direction of the vehicle is adjusted by controlling the deformation parameter of the suspension of the vehicle without performing braking measures. This avoids large energy consumption and abrasion of a vehicle braking system.
-
公开(公告)号：EP4180289A1
公开(公告)日：2023-05-17
申请号：EP20947081.4
申请日：2020-07-29
发明人： LIU, Donghao , YANG, Weimiao , ZHANG, Yongsheng
摘要： A hydraulic adjustment unit, a braking system, a vehicle, a control method, a control apparatus, and a controller are provided, and are applicable to an intelligent vehicle, a self-driving car, a new energy vehicle, or a conventional vehicle, to improve pressurization efficiency of the braking system. The hydraulic adjustment unit includes a first hydraulic adjustment apparatus (107) having a two-way pressurization function. A first hydraulic cavity (25) of the first hydraulic adjustment apparatus (107) separately communicates with a third brake pipeline (130) and a fourth brake pipeline (140) by using a first brake pipeline (110), a second hydraulic cavity (27) separately communicates with the third brake pipeline (130) and the fourth brake pipeline (140) by using a second brake pipeline (120), and a first control valve (32) and a second control valve (34) are respectively disposed on the third brake pipeline (130) and the fourth brake pipeline (140), to control connection/disconnection between the third brake pipeline (130) and the fourth brake pipeline (140), so that the first hydraulic adjustment apparatus (107) can provide brake force for a first group of wheels (43, 44) or a second group of wheels (45, 46) in a two-way pressurization manner.
-
7.发明公开
公开(公告)号：EP4122785A1
公开(公告)日：2023-01-25
申请号：EP21787694.5
申请日：2021-02-22
发明人： YANG, Weimiao , ZHANG, Yongsheng , LIU, Donghao , ZHANG, Wei
摘要： A hydraulic adjustment unit of a brake system in a vehicle includes a first fluid reservoir (29), a second fluid reservoir (2), a first oil return pipe (110), and a second oil return pipe (120). The first oil return pipe (110) is connected to wheel cylinders (151) and (152) of a vehicle, so that brake fluid in the wheel cylinders (151) and (152) of the vehicle is delivered to the first fluid reservoir (29), to depressurize wheels of the vehicle. The second oil return pipe (120) is configured to connect to the wheel cylinders (151) and (152) of the vehicle through oil inlet pipes (130) and (140) of a brake system, so that the brake fluid in the wheel cylinders (151) and (152) of the vehicle is delivered to the second fluid reservoir (2) through the oil inlet pipes (130) and (140) of the brake system, to depressurize the wheels of the vehicle. Therefore, depressurization efficiency of the brake system is improved. A brake system in a vehicle, a vehicle, and a control method are further provided.
-
公开(公告)号：EP4386612A1
公开(公告)日：2024-06-19
申请号：EP22874460.3
申请日：2022-08-16
发明人： GU, Qiang , ZHUANG, Yuzheng , LIU, Donghao , LUO, Jie , WANG, Bin
CPC分类号： H04Q9/00 , H04Q2209/8620130101 , H04B17/21
摘要： This application provides a parameter calibration method and apparatus that may be applied to vehicles such as an intelligent vehicle, a new energy vehicle, a connected vehicle, and an intelligent driving vehicle. The method includes: obtaining evaluation results of parameter combinations of a plurality of devices, where the evaluation results of the parameter combinations of the plurality of devices are obtained by respectively performing calibration tests by the plurality of devices in a first time period based on the parameter combinations of the plurality of devices; and obtaining at least one adjusted parameter combination based on the evaluation results of the parameter combinations of the plurality of devices. Solutions in this application can improve parameter calibration efficiency.
-
公开(公告)号：EP4349673A1
公开(公告)日：2024-04-10
申请号：EP21947621.5
申请日：2021-06-30
发明人： YANG, Weimiao , LV, Shangwei , LIU, Donghao , ZHANG, Yongsheng
摘要： A braking system and a method for controlling the braking system are provided. The braking system includes a main braking subsystem (110) and a redundant braking subsystem (120), where the main braking subsystem (110) includes a brake master cylinder (119), and the redundant braking subsystem (120) includes a redundant boosting apparatus (122) and a third isolation valve (123). The redundant boosting apparatus (122) includes a first input end (33) and a first output end (34). The first input end (33) is configured to input a brake fluid, and the first output end (34) of the redundant boosting apparatus (122) is hydraulically connected to the brake master cylinder (119). One end of the third isolation valve (123) is hydraulically connected to the first input end (33) of the redundant boosting apparatus (122), and another end of the third isolation valve (123) is hydraulically connected to the brake master cylinder (119). According to the redundant braking subsystem, redundancy performance of the braking system can be improved, and the redundant braking subsystem is simple in structure, is easy to control, and has low costs.
-
公开(公告)号：EP4183663A1
公开(公告)日：2023-05-24
申请号：EP20946476.7
申请日：2020-07-24
发明人： LING, Mingze , ZHANG, Yongsheng , LI, Jie , LIU, Donghao
IPC分类号： B62D3/12
摘要： A steer-by-wire system is provided, and includes a steering column (2) and a limiting apparatus (3). The limiting apparatus (3) includes a fixed rod (31), a slide block (32), and a movable limiting block (33). The slide block (32) is located on the fixed rod (31), and the slide block (32) can slide on the fixed rod (31) as the steering column (2) rotates. The movable limiting block (33) is located on the fixed rod (31), and can slide on the fixed rod (31), to limit the slide block (32) to slide on the fixed rod (31), so that the steering column (2) rotates within a target rotation range. A steering control method, a vehicle, and a controller are further disclosed. In the steer-by-wire system, the limiting apparatus limits steering of the steering column, so that the steering column no longer rotates without a limitation, but rotates within the target rotation range corresponding to a rotation range of a steerable wheel. In this way, the rotation range of the steering column is consistent with the rotation range of the steerable wheel. This facilitates operation and control of a driver on vehicle steering, and facilitates driving safety.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.012 秒)
