Method and system for controlling anti-lock brake system operation of vehicle

Patent metadata

Field	Value
Publication number	US-9393940-B2
Application number	US-201314099234-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Oct 18, 2013
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A method and system for controlling the operation of an Anti-lock Brake System (ABS) are provided. The system includes an ABS controller and a vehicle controller. The ABS controller enables an ABS operation signal when an ABS operation is necessary. The vehicle controller receives the enabled ABS operation signal from the ABS controller and adjusts the output of motor torque based on the received ABS operation signal. The ABS controller operates the ABS when a signal indicating that the motor torque has been removed is received from the vehicle controller.

First claim

What is claimed is:

1. A method of controlling an operation of an Anti-lock Brake System (ABS) of a vehicle, comprising:
generating, by a vehicle controller, a motor torque instruction that enables a motor to be operated based on a movement of an acceleration pedal or a brake pedal of the vehicle;
receiving, by the vehicle controller, an ABS operation signal that indicates whether the ABS operation is necessary from an ABS controller configured to operate the ABS of the vehicle;
removing, by the vehicle controller, motor torque when the ABS operation signal is received, and sending a motor torque removal signal indicating that the motor torque has been removed to the ABS controller to operate the ABS;
detecting, by the vehicle controller, a wheel speed of the vehicle and a speed of the motor during ABS operation; and
generating and outputting, by the vehicle controller, regenerative braking motor torque during the ABS operation when a difference between the detected wheel speed and the detected motor speed is lees than a predetermined reference value.

2. A method of controlling an operation of an Anti-lock Brake System (ABS) of a vehicle, comprising:
generating, by a vehicle controller, a motor torque instruction that enables a motor to be operated based on a movement of an acceleration pedal or a brake pedal of the vehicle;
determining, by the vehicle controller, whether the ABS is operating by receiving a hydraulic control signal or hydraulic sensor signal of the ABS from an ABS controller that operates the ABS of the vehicle;
removing, by the vehicle controller, motor torque in response to determining that the ABS is operating;
detecting, by the vehicle controller, a wheel speed of the vehicle and a speed of the motor during the ABS operation; and
generating and outputting, by the vehicle controller, regenerative braking motor torque during the ABS operation when a difference between the detected wheel speed and the detected motor speed is lees than a predetermined reference value.

3. A system for controlling an operation of an Anti-lock Brake System (ABS) of a vehicle, comprising:
an ABS controller configured to enable an ABS operation signal when the ABS operation is necessary; and
a vehicle controller configured to:
receive the enabled ABS operation signal from the ABS controller and adjust an output of motor torque based on the received ABS operation signal,
detect a wheel speed of the vehicle and a speed of the motor during the ABS operation, and
generate and output regenerative braking motor torque during the ABS operation when a difference between the detected wheel speed and the detected motor speed is less than a predetermined reference value,

wherein the ABS controller is configured to operate the ABS when a signal indicating that the motor torque has been removed is received from the vehicle controller.

4. The system of claim 3 , wherein the ABS controller is configured to set a maximum standby time for the removal of the motor torque.

5. The system of claim 4 , wherein the ABS controller is configured to operate the ABS after the maximum standby time has elapsed.

6. The system of claim 4 , wherein the maximum standby time is extracted and set from a previously generated maximum standby time table based on a driving state and driving environments of the vehicle.

7. A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
program instructions that generate a motor torque instruction that enables a motor to be operated based on a movement of an acceleration pedal or a brake pedal of the vehicle;
program instructions that receive an ABS operation signal that indicates whether the ABS operation is necessary from an ABS controller configured to operate the ABS of the vehicle;
program instructions that remove motor torque when the ABS operation signal is received, and sending a motor torque removal signal indicating that the motor torque has been removed to the ABS controller to operate the ABS;
program instruction that detect a wheel speed of the vehicle and a speed of the motor during the ABS operation; and
program instructions that generate and output regenerative braking motor torque during the ABS operation when a difference between the detected wheel speed and the detected motor speed is lees than a predetermined reference value.

8. The non-transitory computer readable medium of claim 7 , further comprising:
program instructions that determine whether the ABS is operating by receiving a hydraulic control signal or hydraulic sensor signal of the ABS from an ABS controller that operates the ABS of the vehicle; and
program instructions that remove motor torque in response to determining that the ABS is operating.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Dong Hun
• Jung Jae Won

Classifications

• B60T2270/602

  ABS features related thereto · CPC title

• B60L3/108 Primary

  whilst braking, i.e. ABS · CPC title

• B60T8/17616

  Microprocessor-based systems · CPC title

• B60T8/1761 Primary

  responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure · CPC title

• B60L7/10

  Dynamic electric regenerative braking (B60L7/22 takes precedence) · CPC title