Vehicle control apparatus and method for controlling the same

Patent metadata

Field	Value
Publication number	US-10759400-B2
Application number	US-201815994916-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Jun 5, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A vehicle control apparatus and a method for controlling the same are disclosed. The vehicle control apparatus includes an inputter, a determiner, and a controller. The inputter receives an automatic vehicle hold (AVH) switch operation signal from an AVH device, and receives a current vehicle movement value sensed by a sensing device and a current vehicle brake force value of a brake device that generates brake force in response to activation of the AVH device. The determiner determines whether the received AVH switch operation signal transitions from an ON state to an AVH entry state, determines whether vehicle movement occurs on the basis of the received current vehicle movement value during an AVH retention time in the AVH entry state, and determines that the current vehicle brake force value is in an abnormal state when vehicle movement occurs. The controller receives the current vehicle movement value and the current vehicle brake force value, and transmits a command for judgment to the determiner.

First claim

What is claimed is:

1. A vehicle control apparatus comprising:
an inputter configured to receive an automatic vehicle hold (AVH) switch operation signal from an AVH device, and receive a current vehicle movement value sensed by a sensing device and a current vehicle brake force value of a brake device that generates brake force in response to activation of the AVH device;
a determiner configured to determine whether the received AVH switch operation signal transitions from an ON state to an AVH entry state, determine whether vehicle movement occurs on the basis of the received current vehicle movement value during an AVH retention time in the AVH entry state, and determine that the current vehicle brake force value is in an abnormal state when vehicle movement occurs; and
a controller configured to receive the current vehicle movement value and the current vehicle brake force value, and transmit a command for judgment to the determiner.

2. The vehicle control apparatus according to claim 1 , further comprising:
a compensator configured to supply a target hydraulic pressure value established in response to the current vehicle movement value to one or more wheels during the abnormal state, thereby compensating for vehicle brake force.

3. The vehicle control apparatus according to claim 2 , further comprising:
a controller configured to turn off the AVH device when the target hydraulic pressure value is supplied to the wheel.

4. The vehicle control apparatus according to claim 1 , wherein:
the inputter receives a current vehicle gradient value and a current vehicle drive force value from the sensing device; and
the determiner determines whether a vehicle gradient state is at a flat level on the basis of the received current vehicle gradient value when the vehicle movement occurs,
determines whether the current vehicle drive force value is higher than the current vehicle brake force value when the vehicle gradient state is at the flat level,
determines whether the vehicle movement successively occurs on the basis of the received current vehicle movement value when the current vehicle drive force value is higher than the current vehicle brake force value, and
determines the abnormal state of the current vehicle brake force value when the vehicle movement successively occurs.

5. The vehicle control apparatus according to claim 4 , further comprising:
a compensator configured to supply, when the abnormal state is decided, a target hydraulic pressure value established in response to the current vehicle movement value to one or more wheels when the vehicle movement has successively occurred, thereby compensating for vehicle brake force.

6. The vehicle control apparatus according to claim 5 , further comprising:
a controller configured to turn off the AVH device when the target hydraulic pressure value is supplied to the wheel in response to successive occurrence of the vehicle movement.

7. The vehicle control apparatus according to claim 1 , further comprising:
an identifier configured to identify that the current vehicle brake force value is in the abnormal state, when the vehicle movement occurs.

8. The vehicle control apparatus according to claim 4 , further comprising:
an identifier configured to identify that the current vehicle brake force value is in the abnormal state when the vehicle movement successively occurs.

9. The vehicle control apparatus according to claim 1 , wherein:
the determiner determines whether the AVH retention time has elapsed; and
the controller performs switching to an electronic parking brake (EPB) device after lapse of the AVH retention time.

10. A method for controlling a vehicle comprising:
receiving an automatic vehicle hold (AVH) switch operation signal from an AVH device;
determining whether the received AVH switch operation signal transitions from an ON state to an AVH entry state;
receiving a current vehicle movement value sensed by a sensing device and a current vehicle brake force value of a brake device that generates brake force in response to activation of the AVH device; and
determining whether vehicle movement occurs on the basis of the received current vehicle movement value during an AVH retention time in the AVH entry state, and determining that the current vehicle brake force value is in an abnormal state when the vehicle movement occurs.

11. The method according to claim 10 , further comprising:
when the abnormal state is decided, supplying a target hydraulic pressure value established in response to the current vehicle movement value to one or more wheels, thereby compensating for brake force of the vehicle.

12. The method according to claim 11 , further comprising:
turning off the AVH device when the target hydraulic pressure value is supplied to the wheel.

13. The method according to claim 10 , further comprising:
receiving a current vehicle gradient value and a current vehicle drive force value from the sensing device;
determining whether a vehicle gradient state is at a flat level on the basis of the received current vehicle gradient value when the vehicle movement occurs;
determining whether the current vehicle drive force value is higher than the current vehicle brake force value when the vehicle gradient state is at the flat level,
determining whether the vehicle movement successively occurs on the basis of the received current vehicle movement value when the current vehicle drive force value is higher than the current vehicle brake force value; and
determining the abnormal state of the current vehicle brake force value when the vehicle movement successively occurs.

14. The method according to claim 13 , further comprising:
when the abnormal state is decided, supplying a target hydraulic pressure value established in response to the current vehicle movement value to one or more wheels when the vehicle movement has successively occurred, thereby compensating for vehicle brake force.

15. The method according to claim 14 , further comprising:
turning off the AVH device when the target hydraulic pressure value is supplied to the wheel in response to successive occurrence of the vehicle movement.

16. The method according to claim 10 , further comprising:
identifying that the current vehicle brake force value is in the abnormal state, when the vehicle movement occurs.

17. The method according to claim 13 , further comprising:
identifying that the current vehicle brake force value is in the abnormal state, when the vehicle movement successively occurs.

18. The method according to claim 10 , further comprising:
determining whether the AVH retention time has elapsed; and
performing switching to an electronic parking brake (EPB) device after lapse of the AVH retention time.

Assignees

• Mando Corp

Inventors

• Cheon Seyoung
• Kwak Byunghak
• Kim Sukku
• Choi Seong Ho
• Han Jung Hun

Classifications

• B60T7/12

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title

• B60T17/221 Primary

  Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems (hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M) · CPC title

• B60Y2300/18116

  Hill holding · CPC title

• B60T2201/06

  Hill holder; Start aid systems on inclined road · CPC title

• B60T7/122 Primary

  for locking of reverse movement · CPC title