Vehicle all-wheel drive control system

    公开(公告)号:US11186172B1

    公开(公告)日:2021-11-30

    申请号:US17119203

    申请日:2020-12-11

    Abstract: A vehicle includes a first axle, a second axle, a driveshaft, a first clutch, a second clutch, a third clutch, and a controller. The second axle has first and second half shafts. The second axle has first and second wheels. The driveshaft is disposed between the first and second axles and is coupled to the second axle. The first clutch is configured to selectively couple the driveshaft to the first axle. The second clutch is configured to selectively couple the first wheel to the first half shaft. The third clutch is configured to selectively couple the second wheel to the second half shaft. The controller is programmed to control the clutches to connect the second axle to the first axle via the driveshaft.

    METHOD OF SHIFTING A TRANSMISSION
    4.
    发明申请
    METHOD OF SHIFTING A TRANSMISSION 有权
    发送传输的方法

    公开(公告)号:US20140274559A1

    公开(公告)日:2014-09-18

    申请号:US13800475

    申请日:2013-03-13

    Abstract: A method of controlling a multiple step downshift is disclosed. Two offgoing shift elements are released and two oncoming shift elements are engaged to complete the downshift. During a first phase of the downshift, one of the offgoing shift elements controls the rate of increase of input shaft speed. During a second phase of the downshift, one of the oncoming shift elements controls the rate of increase of the input shaft speed. The method computes target torque capacities such that output torque and input shaft acceleration are continuous during the transition between phases. Furthermore, the method computes target torque capacities such that both oncoming clutches reach zero relative speed simultaneously as the input shaft reaches the final speed ratio.

    Abstract translation: 公开了一种控制多级降档的方法。 释放两个偏离的换档元件并且接合两个迎面而来的换档元件来完成降档。 在降档的第一阶段期间,离合换档元件中的一个控制输入轴转速的增加速率。 在降档的第二阶段期间,迎面而来的换挡元件中的一个控制输入轴转速的增加速率。 该方法计算目标转矩容量,使得输出转矩和输入轴加速度在相间过渡期间是连续的。 此外,该方法计算目标扭矩容量,使得当输入轴达到最终速比时,迎面而来的离合器同时达到零相对速度。

    Vehicle control for optimized operation

    公开(公告)号:US11945456B2

    公开(公告)日:2024-04-02

    申请号:US17588401

    申请日:2022-01-31

    Abstract: Upon detecting a mobile object approaching a target region, a target speed profile for a vehicle, a position and a speed for the vehicle, and a position and a speed for the mobile object are input to a first neural network that outputs an entry probability distribution of predicted entry times at which the mobile object will enter the target region. The target speed profile, the position and the speed for the vehicle, the position and the speed for the mobile object, and a predicted entry time at which the mobile object entered the target region are input to a second neural network that outputs an exit probability distribution of predicted exit times at which the mobile object will exit the target region. An optimized speed profile is determined based on the entry and exit probability distributions by executing a model predictive control algorithm in a rolling horizon. A vehicle is operated based on the optimized speed profile.

    PREDICTIVE-BASED CONTROL FOR TRANSMISSION SHIFTING

    公开(公告)号:US20220242414A1

    公开(公告)日:2022-08-04

    申请号:US17167235

    申请日:2021-02-04

    Abstract: A powertrain includes a transmission having an input shaft, an output shaft, and a plurality of clutches engageable in various combinations to establish varying power flow paths between the input and output shafts. A controller is programmed to, responsive to a shift of the transmission: reduce torque capacity of an off-going one of the clutches and increase torque capacity of an oncoming one of the clutches during a torque transfer phase of the shift, and, in response to an inertia phase of the shift, continue to command non-zero torque capacity to the off-going clutch such that the off-going clutch brakes the output shaft throughout an entire duration of the inertia phase.

    Method of shifting a transmission
    7.
    发明授权
    Method of shifting a transmission 有权
    移动传输的方法

    公开(公告)号:US09028365B2

    公开(公告)日:2015-05-12

    申请号:US13800475

    申请日:2013-03-13

    Abstract: A method of controlling a multiple step downshift is disclosed. Two offgoing shift elements are released and two oncoming shift elements are engaged to complete the downshift. During a first phase of the downshift, one of the offgoing shift elements controls the rate of increase of input shaft speed. During a second phase of the downshift, one of the oncoming shift elements controls the rate of increase of the input shaft speed. The method computes target torque capacities such that output torque and input shaft acceleration are continuous during the transition between phases. Furthermore, the method computes target torque capacities such that both oncoming clutches reach zero relative speed simultaneously as the input shaft reaches the final speed ratio.

    Abstract translation: 公开了一种控制多级降档的方法。 释放两个偏离的换档元件并且接合两个迎面而来的换档元件来完成降档。 在降档的第一阶段期间,离合换档元件中的一个控制输入轴转速的增加速率。 在降档的第二阶段期间,迎面而来的换挡元件中的一个控制输入轴转速的增加速率。 该方法计算目标转矩容量,使得输出转矩和输入轴加速度在相间过渡期间是连续的。 此外,该方法计算目标扭矩容量,使得当输入轴达到最终速比时,迎面而来的离合器同时达到零相对速度。

    CONTROLLING A VEHICLE LANE-CHANGE
    8.
    发明公开

    公开(公告)号:US20240001926A1

    公开(公告)日:2024-01-04

    申请号:US17852900

    申请日:2022-06-29

    Abstract: Upon detecting a lane-change trigger to move an ego vehicle from a current lane to a target lane, a target vehicle is identified in the target lane. Then a set of candidate trajectories is built for the lane-change maneuver by, for each of the target vehicles in the target lane: determining a set of constraints for a lane-change maneuver based on current data collected in the ego vehicle, including speed and distance constraints for the ego vehicle, and adding to the set of candidate trajectories, from a stored set of trajectories, a candidate trajectory for the lane-change maneuver that satisfies the constraints for the lane-change maneuver. Upon determining that the set of candidate trajectories has been built for each of the target vehicles, an optimal trajectory is selected from the set of candidate trajectories. A longitudinal acceleration of the ego vehicle is commanded based on the optimal trajectory.

    VEHICLE CONTROL FOR OPTIMIZED OPERATION
    9.
    发明公开

    公开(公告)号:US20230242134A1

    公开(公告)日:2023-08-03

    申请号:US17588401

    申请日:2022-01-31

    Abstract: Upon detecting a mobile object approaching a target region, a target speed profile for a vehicle, a position and a speed for the vehicle, and a position and a speed for the mobile object are input to a first neural network that outputs an entry probability distribution of predicted entry times at which the mobile object will enter the target region. The target speed profile, the position and the speed for the vehicle, the position and the speed for the mobile object, and a predicted entry time at which the mobile object entered the target region are input to a second neural network that outputs an exit probability distribution of predicted exit times at which the mobile object will exit the target region. An optimized speed profile is determined based on the entry and exit probability distributions by executing a model predictive control algorithm in a rolling horizon. A vehicle is operated based on the optimized speed profile.

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