Patent classifications
B60W2720/26
Regenerative braking/anti-lock braking control system
A vehicle includes an axle, an electric machine, a first wheel, a second wheel, a first friction brake, a second friction brake, and a controller. The controller is programmed to, in response to and during an anti-locking braking event, generate first and second signals indicative of a braking torque demand at the first and second wheels, respectively, based on a difference between a desired wheel slip ratio and an actual wheel slip ratio of the first and second wheels, respectively, adjust a regenerative braking torque of the electric machine based on a product of the first signal and a regenerative braking weighting coefficient, adjust a first friction braking torque based on a product of the first signal and a friction braking weighting coefficient, and adjust a second friction braking torque based on the second signal and dynamics of the first and second output shafts.
MOTION CONTROL IN MOTOR VEHICLES
A method for controlling actuators acting on vehicle wheels of a motor vehicle comprises ascertaining a force to be brought about on a reference point of the motor vehicle on the basis of driver specifications, ascertaining wheel forces to be brought about on the vehicle wheels to implement the force to be brought about on the reference point of the motor vehicle by means of a first dynamic allocation by model-based predictive control (MPC), ascertaining setpoint values for wheel parameters from the ascertained wheel forces, and actuating the actuators of the motor vehicle so as to implement the setpoint values of the wheel parameters.
VEHICLE GEAR-SHIFTING CONTROL APPARATUS
A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of an automobile, a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft and a regeneration control of performing regeneration by at least one of distributing a braking force by the friction brake system and imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation. The controller executes a first coordinated gear-shifting control of reducing hydraulic pressure in the friction brake system and, at the same time, changing the shift stage while continuing the regeneration operation during brake regeneration and executes a second coordinated gear-shifting control of changing the shift stage after increasing an input torque during non-brake regeneration.
CONTROL DEVICE FOR ELECTRIC VEHICLE
A control device for an electric vehicle is provided, which includes a drive motor of which magnetic poles of a rotor are comprised of variable magnetism magnets, and a clutch disposed between the drive motor and driving wheels. When the electric vehicle travels, the control device performs a torque control, and a first clutch control in which an engaging torque of the clutch is controlled to be higher than a demanded torque. When performing a magnetization control when the electric vehicle travels, the control device changes the clutch control from the first clutch control to a second clutch control in which the engaging torque is made to coincide with the demanded torque, before the execution of the magnetization control, and adds a given slip torque to the demanded torque to start a micro slip control in which the clutch is transitioned from an engaged state into a micro slip state.
System and Method for Reducing Vehicle Turning Radius
A method of providing automated application of turn radius reduction in a driver assist mode may include receiving steering wheel angle and wheel speed information to determine a target wheel slip during a turn. The method may further include comparing the target wheel slip to a current wheel slip to determine a slip error, and applying braking torque to an inside wheel based on the slip error to reduce the turn radius.
Vehicle gear-shifting control apparatus
A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of an automobile, a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft and a regeneration control of performing regeneration by at least one of distributing a braking force by the friction brake system and imparting a regenerative braking torque to rear wheels by causing the motor to perform a regeneration operation. The controller executes a first coordinated gear-shifting control of reducing hydraulic pressure in the friction brake system and, at the same time, changing the shift stage while continuing the regeneration operation during brake regeneration and executes a second coordinated gear-shifting control of changing the shift stage after increasing an input torque during non-brake regeneration.
DRIVING/BRAKING FORCE CONTROL APPARATUS
A driving/braking force control apparatus includes a front-wheel longitudinal force generator, a rear-wheel longitudinal force generator, a tire slip angle output unit, a tire lateral force output unit, a slip ratio output unit, a tire lateral force change rate output unit, a target yaw moment setting unit, and a driving/braking force distribution control unit. The driving/braking force distribution control unit performs a control of an output allocation ratio between the front-wheel longitudinal force generator and the rear-wheel longitudinal force generator based on a target value of an additional yaw moment, a change rate of a tire lateral force of a front wheel to a slip ratio of the front wheel, and a change rate of a tire lateral force of a rear wheel to a slip ratio of the rear wheel.
Preemptive chassis control intervention for autonomous vehicle
Described herein is a system and method for preemptive chassis control intervention for an autonomous vehicle having a mechanical system and a chassis controller. The chassis controller is configured to output a consumption signal that represents a percentage of an activation threshold consumed by an operation monitored by the chassis controller, wherein the chassis controller is activated to manipulate the mechanical system when the activation threshold is reached. A computing system of the autonomous vehicle receives the consumption signal output by the chassis controller to determine a path plan for the autonomous vehicle based upon the percentage of the activation threshold consumed by the operation monitored by the chassis controller. The computing system further controls the mechanical system to execute the path plan to preempt activation of the chassis controller.
Vehicle posture control apparatus based on acceleration detection signals
A vehicle control apparatus according to an embodiment of the present technology includes a control unit. The control unit generates a control signal for controlling behavior of a vehicle body on a basis of a first acceleration detection signal and a second acceleration detection signal, the first acceleration detection signal including information relating to an acceleration acting on the vehicle body, the first acceleration detection signal having an alternating current waveform corresponding to the acceleration, the second acceleration detection signal including information relating to the acceleration, the second acceleration detection signal having an output waveform, an alternating current component corresponding to the acceleration being superimposed on a direct current component in the output waveform.
VEHICLE CONTROL SYSTEM, VEHICLE CONTROL METHOD, AND STORAGE MEDIUM
This application relates to a vehicle control system, a vehicle control method, and a storage medium. The vehicle control system includes: a planning layer in which a service is configured to generate an operation instruction according to a driving task; a reference layer in which a service is configured to generate a target parameter according to the operation instruction, the target parameter reflecting a requirement for state control of a vehicle; an advanced control layer in which a service is configured to generate an execution parameter according to the target parameter, the execution parameter reflecting an execution capability of a vehicle executor for the requirement for state control; an allocation control layer in which a service is configured to allocate category task parameters to category executors according to the execution parameter; and an underlying control layer in which a service is configured to provide the category task parameter for at least one of the category executors. The vehicle control system can shield underlying hardware and provide a comprehensive service combination, so as to implement more rational control.