Patent classifications
B60W2720/30
Architecture and methodology for real-time target wheel slip identification to optimally manage wheel stability and vehicle lateral grip
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.
Method for Operating a Driver Assistance System of an at Least Partially Electrically Operable Motor Vehicle for Controlling Four Wheels, a Driver Assistance System and Motor Vehicle
A method for operating a driver assistance system of an electrically driven motor vehicle includes providing a first and a second driving mode and setting the first driving mode or the second driving mode via an actuating device by a single user input. A first turning maneuver of the motor vehicle is set as the first driving mode and a second turning maneuver of the motor vehicle is set as the second driving mode. During the first turning maneuver, a direction of movement for each of the four wheels of the motor vehicle is respectively set via four control signals such that right side wheels of the motor vehicle and left side wheels of the motor vehicle rotate against each other. Via the driver assistance system, the motor vehicle is operated at least partially autonomously at least during the first driving mode and/or the second driving mode.
VEHICLE AND METHOD OF CONTROLLING TURNING THEREOF
A vehicle and a method of controlling turning thereof are provided. The turning control method of a vehicle includes calculating first compensation torque based on a lateral acceleration variation during turning, determining first compensated demanded torque by applying the first compensation torque to demanded torque, determining second compensation torque for preventing wheel slip of a driving wheel based on the first compensated demanded torque and an actual vehicle behavior, and determining second compensated demanded torque input to a driving source controller by applying the second compensation torque to the first compensated demanded torque.
METHOD FOR CONTROLLING THE POWERTRAIN OF A MOTOR VEHICLE
Disclosed is a method for controlling the powertrain of a motor vehicle between the current location of the vehicle and an arrival point, including calculating a theoretical optimal traction force, determining a friction force applied to the vehicle, calculating an actual optimal force to be applied to the wheels as far as the arrival point, and applying a traction force to the wheels of the vehicle when the calculated actual optimal force is strictly greater than a predetermined threshold value or else not applying a force to the wheels of the vehicle when the calculated actual optimal force is greater than or equal to zero and less than or equal to the predetermined threshold value, or else applying a braking force to the wheels of the vehicle when the calculated actual optimal force is strictly less than zero.
VEHICLE CONTROL SYSTEM AND VEHICLE CONTROL METHOD
In a case where a first control device performs traveling control, an abnormality occurs in a first control target, and an abnormality further occurs in a first control target or a second control target, a vehicle control system executes the following processes: (A) in a case where no abnormality occurs in a first control target required for the traveling control, the first control device continues the traveling control; (B) in a case where an abnormality occurs in the first control target required for the traveling control and no abnormality occurs in the second control target required for the traveling control, the second control device executes the traveling control; and (C) in a case where an abnormality occurs in the first control target required for the traveling control and an abnormality occurs in the second control target required for the traveling control, the traveling control is limited.
CONTROL UNIT AND A METHOD FOR DETERMINING A VALUE INDICATIVE OF A LOAD BEARING CAPABILITY OF A GROUND SEGMENT SUPPORTING A VEHICLE
The present invention relates to a control unit for determining a value indicative of a load bearing capability of a ground segment supporting a vehicle. The control unit is configured to issue a control signal to the vehicle to thereby impart a motion change of the vehicle, and receive response information from the vehicle indicative of the vehicle's response to the imparted motion change. The control unit is further configured to, based on the response information, determine a vertical position change of at least one wheel of the vehicle, and based on the determined vertical position change and the imparted motion change, determine the value indicative of the load bearing capability of the ground segment.
Methods and system for launching a hybrid vehicle
Methods and systems are provided for operating a hybrid vehicle during launch conditions from rest. In one example, a driver demand torque is held constant until a threshold vehicle speed is reached when a constant accelerator pedal position is present so that closing of a transmission input clutch may result in reduced driveline torque disturbances while a desired driver demand torque is delivered.
A METHOD AND A CONTROL UNIT FOR DETERMINING A PARAMETER INDICATIVE OF A ROAD CAPABILITY OF A ROAD SEGMENT SUPPORTING A VEHICLE
The invention relates to a method for determining a parameter indicative of a road capability of a road segment (16) supporting a vehicle (10). The vehicle (10) comprises a sensor (18) adapted to generate an information package on the basis of signals (20, 22) reflected from the surface of a portion of the road segment (16) in front of the vehicle (10), as seen in an intended direction of travel of the vehicle (10). The vehicle (10) further comprises a plurality of ground engaging members (12, 14). The method comprises: —determining a reference content measure indicative of the information content of an information package supplied by the sensor (18) at a reference time instant (T1); —comparing the reference content measure to a previous content measure indicative of the information content of an information package supplied by the sensor (18) at a previous time instant (T0), the previous time instant (T0) occurring before the reference time instant (T1); —upon detecting that a difference between the reference content measure and the previous content measure is outside a predetermined tolerance range, allowing the execution of a determination procedure for determining the parameter indicative of the road capability of the road segment (16) supporting the vehicle (10); —upon detecting that the difference between the reference content measure and the previous content measure is within the predetermined tolerance range, not allowing the execution of the determination procedure, and —wherein the determination procedure comprises modifying the operation of one or more of the ground engaging members (12, 14).
SELECTABLE VEHICLE CREEP
A control system (208) for enabling deactivation of vehicle creep in a vehicle (10) with an engine (202), the control system (208) comprising one or more controllers (300), wherein the control system (208) is configured to: enable vehicle creep (402) so that wheel drive torque can reach a first value greater than zero without a driver load request and without a brake request, wherein enabling vehicle creep comprises the engine (202) being active while connected to a vehicle wheel (FL, FR); monitor for a vehicle creep deactivation signal (404); and in response to the vehicle creep deactivation signal (404), inhibit vehicle creep (412) so that wheel drive torque cannot reach the first value without a driver load request, and wherein inhibiting vehicle creep comprises causing disconnection (414) of the engine (202), at least in part, from the vehicle wheel (FL, FR).
Hybrid vehicle launching methods and system
Methods and systems are provided for operating a hybrid vehicle during launch conditions from rest. In one example, a threshold speed below which a clutch is closed during a vehicle launch is adjusted so that driver demand wheel torque is held constant for a constant accelerator pedal position until the clutch is closed.