VEHICLE CONTROL APPARATUS

• US 20090112404A1
• Filed: 10/28/2008
• Published: 04/30/2009
• Est. Priority Date: 10/29/2007
• Status: Active Grant

• Current Assignee: Hitachi Astemo Ltd. (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: IMURA, Shinya, Yokoyama, Atsushi, Yoshida, Tatsuya, Takahashi, Junya
• Granted Patent: US 7,853,366 B2
• Time in Patent Office: Days
• US Class Current: 701/41
• CPC Class Codes: B60W 30/04 related to roll-over prevention
• CPC Class Codes: B60W 40/10 related to vehicle motion

Abstract

A vehicle control apparatus having a vehicle state quantity detection unit for detecting vehicle state quantity such as a roller angular velocity, a lateral jerk calculation unit for calculating lateral jerk of a vehicle based on the vehicle state quantity, and a control unit for carrying out the vehicle control based on the lateral jerk.

Claims

1. A vehicle control apparatus comprising:

a vehicle state quantity detection unit for detecting a vehicle state quantity;

a lateral jerk calculation unit for calculating a lateral jerk of a vehicle based on said vehicle state quantity; and

a control unit for carrying out the vehicle control based on said lateral jerk.

2. The vehicle control apparatus according to claim 1, wherein

said vehicle state quantity detection unit detects a roll angular velocity as said vehicle state quantity, and said lateral jerk calculation unit estimates said lateral jerk based on said roll angular velocity.

3. The vehicle control apparatus according to claim 2, wherein

said lateral jerk calculation unit estimates said lateral jerk by using a transfer function having said roll angular velocity as input, and said lateral jerk as output.

4. The vehicle control apparatus according to claim 1, wherein said vehicle state quantity detection unit detects a steering angle as said vehicle state quantity, and said lateral jerk calculation unit estimates said lateral jerk based on said steering angle.

5. The vehicle control apparatus according to claim 4, wherein

said lateral jerk calculation unit estimates said lateral jerk by using a transfer function having said steering angle as input, and lateral acceleration of a vehicle as output.

6. The vehicle control apparatus according to claim 1, wherein

said control unit carries out the control to start the acceleration or deceleration, or to end the acceleration or deceleration, or to make the acceleration constant, during a period where said lateral jerk value is near zero.

7. The vehicle control apparatus according to claim 1, wherein said control unit carries out the control to make close a value obtained by dividing said lateral jerk with vehicle speed, and a value of yaw angular acceleration.

10. A vehicle comprising the vehicle control apparatus according to claim 1.

8. A vehicle control apparatus comprising:

a roll angular velocity detection unit for detecting a roll angular velocity of a vehicle; and

a control unit carrying out the control to start acceleration or deceleration, or end acceleration or deceleration, or make acceleration constant, during a period when value of said roll angular velocity is near zero.

9. The vehicle control apparatus according to claim 8, further comprising a lateral jerk calculation unit for estimating said lateral jerk based on said roll angular velocity, wherein said control unit carries out said control based on said lateral jerk.