公开(公告)号：US20180362022A1

公开(公告)日：2018-12-20

申请号：US15622599

申请日：2017-06-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  SHIH-KEN CHEN ,  BAKHTIAR B. LITKOUHI ,  NIKOLAI K. MOSHCHUK ,  PATRICK J. MONSERE ,  EDWARD T. HEIL

IPC: B60W30/045 ,  B60W10/04 ,  B60W10/20 ,  B60W30/08 ,  B60W50/029 ,  B60W10/18 ,  B60W40/101 ,  B60W40/105 ,  B60W40/114

Abstract: A method and system for controlling a vehicle to improve vehicle dynamics are provided. The method includes receiving data from a plurality of sensors which monitor vehicle dynamics by monitoring at least wheel and steering movements associated with a vehicle system used in controlling vehicle dynamics by control outputs from a holistic vehicle control system. Then, estimating states of the vehicle from computations of longitudinal and latitudinal velocities, tire slip ratios, clutch torque, axle torque, brake torque, and slip angles derived from the data sensed by the sensors from the wheel and steering movements. Finally, formulating a model of vehicle dynamics by using estimations of vehicle states with a target function to provide analytical data to enable the model of vehicle dynamics to be optimized and for using the data associated with the model which has been optimized to change control outputs to improve in real-time the vehicle dynamics.

公开(公告)号：US20180297587A1

公开(公告)日：2018-10-18

申请号：US15486540

申请日：2017-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  BAKHTIAR B. LITKOUHI

IPC: B60W30/045 ,  B60W10/04 ,  B60W10/20 ,  B60W10/18 ,  B60W50/00

CPC classification number: B60W30/045 ,  B60W10/04 ,  B60W10/18 ,  B60W10/20 ,  B60W50/00 ,  B60W2050/0014 ,  B60W2050/0062 ,  B60W2400/00 ,  B60W2550/14 ,  B60W2710/18 ,  B60W2710/20 ,  B60W2720/106 ,  B60W2720/14

Abstract: A control system for providing a yaw moment control action is provided. The control system comprises a command interpreter and a control segment. The command interpreter is configured to generate desired current vehicle states, when a vehicle is driven manually, wherein the current vehicle states comprise a target yaw rate state and a target lateral velocity state. The command interpreter is further configured to generate a desired states vector, when the vehicle is driven autonomously, using vehicle path planning instructions, wherein the desired states vector comprises current and future ideal yaw rate and lateral velocity states. The control segment is configured to generate a yaw moment control action using the desired current vehicle states when the vehicle is driven manually and generate a yaw moment control action using the desired states vector when the vehicle is driven autonomously.

公开(公告)号：US20180354554A1

公开(公告)日：2018-12-13

申请号：US15616801

申请日：2017-06-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  MOHAMMAD NASERIAN ,  BAKHTIAR B. LITKOUHI

IPC: B62D15/02 ,  B60R1/00

CPC classification number: B62D15/028 ,  B60K2350/1028 ,  B60K2350/106 ,  B60K2350/1088 ,  B60K2350/2013 ,  B60R1/00 ,  B60R2300/105 ,  B60R2300/303 ,  B60R2300/806

Abstract: Methods and motor vehicles that assist a driver are provided. In an exemplary embodiment, a method includes identifying one or more potential parking positions for a motor vehicle. Selection of a desired parking position is requested, and a suggested driving path for positioning the motor vehicle in the desired parking position is calculated. The suggested driving path is displayed to the driver on a display screen, and the suggested driving path is re-calculated as the driver drives the motor vehicle with a steering wheel. The display screen is updated with the suggested driving path after the suggested driving path is re-calculated and as the driver drives the motor vehicle with the steering wheel.

公开(公告)号：US20180347486A1

公开(公告)日：2018-12-06

申请号：US15614172

申请日：2017-06-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  JAMES H. HOLBROOK ,  HUALIN TAN ,  EHSAN HASHEMI ,  BAKHTIAR B. LITKOUHI

IPC: F02D41/00 ,  F02P5/04 ,  F02P5/14 ,  F02P5/15 ,  B60K28/16 ,  B60T8/175

CPC classification number: B60T8/175 ,  B60K28/16 ,  B60T8/1755 ,  B60T2270/304 ,  B60T2270/86 ,  B60W50/0098 ,  B60W50/10 ,  B60W2050/0031 ,  B60W2050/0062 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2540/18 ,  F02P5/04 ,  F02P5/142 ,  F02P5/1504

Abstract: A combined slip based driver command interpreter for a vehicle is provided which may be communicatively coupled to a steering wheel angle sensor, an acceleration pedal position sensor and a brake pedal position sensor, the combined slip based driver command interpreter including, but not limited to a memory configured to store a non-linear combined lateral slip model and a non-linear combined longitudinal slip model, and a processor, the processor configured to determine a driver's intended vehicle lateral velocity and a driver's intended vehicle yaw rate based upon the angle of the steering wheel, the position of the acceleration pedal, the position of the brake pedal, a longitudinal velocity of the vehicle, the non-linear combined lateral slip model and the non-linear combined longitudinal slip model.

公开(公告)号：US20180356819A1

公开(公告)日：2018-12-13

申请号：US15621221

申请日：2017-06-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  SAYYED ROUHOLLAH JAFARI TAFTI ,  EDWARD T. HEIL ,  NIKOLAI K. MOSHCHUK ,  BAKHTIAR B. LITKOUHI

IPC: G05D1/00 ,  G05D1/02

Abstract: A method is provided for autonomously operating a vehicle. The method includes receiving, at a processor, at least vehicle state data and vehicle object environment data; generating, with the processor, an optimal path for the vehicle with a cost function based on the vehicle state data and the vehicle object environment data; identifying, with the processor, at least one critical condition constraint based on at least one of the vehicle or vehicle environment; modifying, with the processor, at least a first portion of the optimal path based on the at least one critical condition constraint to result in a short-range trajectory portion; generating a resulting trajectory with the short-range trajectory portion; and implementing the resulting trajectory on the vehicle.

公开(公告)号：US20180297633A1

公开(公告)日：2018-10-18

申请号：US15486086

申请日：2017-04-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  BAKHTIAR B. LITKOUHI ,  NIKOLAI K. MOSHCHUK ,  SHIH-KEN CHEN

IPC: B62D6/00 ,  B62D5/04

CPC classification number: B62D6/003 ,  B62D6/007

Abstract: Methods and system are provided for controlling a vehicle. The methods and systems read sensors and estimate pneumatic trail for a tire of the vehicle based on the sensor readings. The methods and systems determine presence or absence of a tire lateral saturation condition based on a comparison of the estimated pneumatic trail for the tire of the vehicle with a pneumatic trail threshold indicative of a tire lateral saturation condition. When the tire lateral saturation condition is present, the methods and systems determine a control value and use the control value as an input to a vehicle control module. The vehicle control module is responsive to the tire lateral saturation condition based on the control value.

公开(公告)号：US20180297605A1

公开(公告)日：2018-10-18

申请号：US15486107

申请日：2017-04-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  EHSAN HASHEMI ,  BAKHTIAR B. LITKOUHI ,  NIKOLAI K. MOSHCHUK ,  SHIH-KEN CHEN

IPC: B60W40/109 ,  B60W40/114 ,  B60W40/101 ,  B60W40/13

CPC classification number: B60W40/109 ,  B60W40/10 ,  B60W40/101 ,  B60W40/114 ,  B60W50/0205 ,  B60W2040/1315 ,  B60W2050/0043 ,  B60W2510/202 ,  B60W2520/105 ,  B60W2520/14 ,  B60W2520/20 ,  B60W2540/18

Abstract: Methods and systems are provided for an improved system and method for validating vehicle lateral velocity estimation. The provided system and method employ an efficient validation algorithm to detect lateral velocity estimation faults. The method and system are robust to road uncertainties and do not require redundant estimations or measurements. The provided system and method offer a technological solution for real time validation of lateral velocity estimation using already existing vehicle sensors, and are independent of (i) road condition information, (ii) wheel torque information, (iii) tire model information, and (iv) tire wear information.

公开(公告)号：US20180037222A1

公开(公告)日：2018-02-08

申请号：US15228869

申请日：2016-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SEYEDALIREZA KASAIEZADEH MAHABADI ,  BAKHTIAR B. LITKOUHI ,  SHIH-KEN CHEN ,  NIKOLAI K. MOSHCHUK

IPC: B60W30/02 ,  B60W50/14 ,  B60W50/00 ,  B60W40/103 ,  B60W40/101

CPC classification number: B60W30/02 ,  B60W40/101 ,  B60W40/103 ,  B60W50/0097 ,  B60W50/14 ,  B60W2050/143 ,  B60W2050/146 ,  B60W2510/202 ,  B60W2520/10 ,  B60W2520/125 ,  B60W2520/14 ,  B60W2520/18

Abstract: Methods and systems are provided for determining vehicle spin-out conditions including conditions indicative of a vehicle spin-out ahead of the vehicle actually spinning-out. The methods and systems receive motion parameters of a vehicle based on sensed signals from at least one vehicle sensor of an electronic power steering system and an inertial measurement unit. The method and systems estimate pneumatic trail based on a rate of change of self-aligning torque with respect to axle lateral force. The methods and systems determine vehicle spin-out conditions based on the estimated pneumatic trail. The methods and systems control at least one feature of a vehicle in response to the determined vehicle spin-out conditions.