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公开(公告)号：US20230044869A1
公开(公告)日：2023-02-09
申请号：US17382879
申请日：2021-07-22
发明人： Ehsan Asadi , SeyedAlireza Kasaiezadeh Mahabadi , Gill Lipton , Asal Nahidi , Isaac Tabatschnic , Bakhtiar B. Litkouhi
摘要： A method of controlling a vehicle includes obtaining a linear representation of a vehicle dynamics model that includes actuator dynamics u integrated with vehicle dynamics x. The actuator dynamics u include a road wheel angle at rear wheels δr and a torque Mz. The method also includes obtaining an objective function based on a function of the vehicle dynamics x and the actuator dynamics u and formulating a cost function to minimize the objective function. The actuator dynamics u including the torque Mz are determined for a next time sample based on minimizing the objective function. The vehicle is controlled to implement the torque Mz.
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公开(公告)号：US11338796B1
公开(公告)日：2022-05-24
申请号：US17124664
申请日：2020-12-17
摘要： A traction control module includes a sensor/estimation module configured to output wheel stability data based on a plurality of wheel condition inputs and a wheel stability monitoring module configured to calculate a plurality of wheel stability predictors based on the wheel stability data. Each of the wheel stability predictors is independently indicative of a wheel slip condition. The traction control module further includes a wheel stability data fusion module configured to receive each of the plurality of wheel stability predictors, combine selected wheel stability predictors from the plurality of wheel stability predictors to generate combinations of the wheel stability predictors, and selectively output a torque reduction request based on the combinations of the wheel stability predictors.
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公开(公告)号：US11318924B1
公开(公告)日：2022-05-03
申请号：US17145616
申请日：2021-01-11
发明人： Saurabh Kapoor , Naser Mehrabi , Seyedeh Asal Nahidi , SeyedAlireza Kasaiezadeh Mahabadi , James H. Holbrook , Hualin Tan , Bakhtiar B. Litkouhi
IPC分类号： B60W10/119 , B60K17/34 , B60K23/08 , B60W10/04
摘要： An axle torque distribution system includes a memory and a control module. The memory stores a steering angle and a toque distribution algorithm. The control module executes the torque distribution algorithm to: obtain the steering angle; based on the steering angle, determine total lateral force requested for axles of a vehicle; based on the total lateral force requested, determine lateral forces requested for the axles while constraining lateral force distribution between the axles, where the constraining of the lateral force distribution includes, based on maximum lateral force capacities of tires of the vehicle, limiting the lateral forces requested for the axles; determine available longitudinal capacities for the axles based on the lateral forces requested respectively for the axles; determine torque capacities of the axles based on the lateral forces requested respectively for the axles; and control distribution of torque to the axles based on the torque capacities of the axles.
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公开(公告)号：US11175667B2
公开(公告)日：2021-11-16
申请号：US16795004
申请日：2020-02-19
发明人： SeyedAlireza Kasaiezadeh Mahabadi , Seyedeh Asal Nahidi , Michael W. Neal , James H. Holbrook , Hualin Tan , Bakhtiar B. Litkouhi
摘要： A vehicle, system and method of operating a vehicle. A sensor for measures a dynamic variable of the vehicle. A processor determines a location of a perceived yaw center (PYC) of the vehicle from the dynamic variable, tracks a desired location of the PYC, and adjusts a control parameter of the vehicle to reduce a difference between the location of the PYC and the desired location of the PYC.
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公开(公告)号：US20210255629A1
公开(公告)日：2021-08-19
申请号：US16795004
申请日：2020-02-19
发明人： SeyedAlireza Kasaiezadeh Mahabadi , Seyedeh Asal Nahidi , Michael W. Neal , James H. Holbrook , Hualin Tan , Bakhtiar B. Litkouhi
IPC分类号： G05D1/02
摘要： A vehicle, system and method of operating a vehicle. A sensor for measures a dynamic variable of the vehicle. A processor determines a location of a perceived yaw center (PYC) of the vehicle from the dynamic variable, tracks a desired location of the PYC, and adjusts a control parameter of the vehicle to reduce a difference between the location of the PYC and the desired location of the PYC.
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公开(公告)号：US20210253089A1
公开(公告)日：2021-08-19
申请号：US16791470
申请日：2020-02-14
发明人： Seyedeh Asal Nahidi , SeyedAlireza Kasaiezadeh Mahabadi , Naser Mehrabi , Saurabh Kapoor , James H. Holbrook , Hualin Tan , Bakhtiar B. Litkouhi
IPC分类号： B60W30/045 , B60W30/04
摘要： A vehicle, system and method of operating the vehicle. A sensor measures a dynamic parameter of the vehicle. A processor determines a lateral force on a first tire based on the dynamic parameter of the vehicle, determines a longitudinal force on the first tire that achieves a maximal grip of the first tire for the lateral force, and adjusts a first torque on the first tire in order to achieve the determined longitudinal force at the first tire.
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公开(公告)号：US11052757B2
公开(公告)日：2021-07-06
申请号：US16376318
申请日：2019-04-05
发明人： SeyedAlireza Kasaiezadeh Mahabadi , Yubiao Zhang , Seyedeh Asal Nahidi , James H. Holbrook , John R. Yost , Hualin Tan , Bakhtiar B. Litkouhi
摘要： Methods of controlling axle torque distribution of a vehicle during steering through a curve include collecting, via a controller: input data which is representative of a plurality of vehicle inputs; vehicle data which is representative of axle torque of the front axle and axle torque of the rear axle; and constraint data which is representative of real-time constraints of the vehicle. The collected input data, vehicle data and constraint data are communicated to a predictive model. Determining, using the predictive model, whether torque adjustments are necessary. The distribution of the axle torque of the front axle and the axle torque of the rear axle is controlled, via the controller, when the torque adjustments are necessary as determined via the predictive model.
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58.发明申请公开(公告)号：US20200339135A1
公开(公告)日：2020-10-29
申请号：US16394890
申请日：2019-04-25
发明人： SeyedAlireza Kasaiezadeh Mahabadi , Seyedeh Asal Nahidi , Michael W. Neal , James H. Holbrook , John R. Yost , Hualin Tan , Bakhtiar B. Litkouhi
摘要： A method and system of controlling a vehicle includes providing a plurality of dynamic state inputs to a controller in the vehicle that is adapted to execute a plurality of control loops and further includes determining an operating mode of the vehicle. Based on the operating mode of the vehicle, a location of an optimum perceived yaw center of the vehicle is determined corresponding to a selected estimation technique using the dynamic state inputs and wherein the estimation technique is selected based upon the determined operating mode of the vehicle. The information related to the location of the optimum perceived yaw center may be used as input for controlling the vehicle in a dynamic state.
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公开(公告)号：US20200317048A1
公开(公告)日：2020-10-08
申请号：US16376318
申请日：2019-04-05
发明人： SeyedAlireza Kasaiezadeh Mahabadi , Yubiao Zhang , Seyedeh Asal Nahidi , James H. Holbrook , John R. Yost , Hualin Tan , Bakhtiar B. Litkouhi
摘要： Methods of controlling axle torque distribution of a vehicle during steering through a curve include collecting, via a controller: input data which is representative of a plurality of vehicle inputs; vehicle data which is representative of axle torque of the front axle and axle torque of the rear axle; and constraint data which is representative of real-time constraints of the vehicle. The collected input data, vehicle data and constraint data are communicated to a predictive model. Determining, using the predictive model, whether torque adjustments are necessary. The distribution of the axle torque of the front axle and the axle torque of the rear axle is controlled, via the controller, when the torque adjustments are necessary as determined via the predictive model.
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60.发明申请公开(公告)号：US20190256094A1
公开(公告)日：2019-08-22
申请号：US15902625
申请日：2018-02-22
发明人： SeyedAlireza Kasaiezadeh Mahabadi , James H. Holbrook , Hualin Tan , John R. Yost , Xueying Kang , Bakhtiar B. Litkouhi
IPC分类号： B60W30/182 , B60W30/18
摘要： A vehicle, system and a method of driving a performance vehicle. The system includes a sensor for detecting a value of driver input to the vehicle, and a processor. The processor is configured to compare the value of the driver input to a threshold value for the driver input, switch to a performance mode operation for the vehicle when the value of the driver input is greater than the threshold value, generate a command at the vehicle based on the value of the driver input using a performance model of the vehicle activated in the performance mode, and activate a performance actuator of the vehicle to generate a dynamic parameter at the vehicle from the command.
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