Control apparatus for vehicle

Patent metadata

Field	Value
Publication number	US-9238462-B2
Application number	US-201214369044-A
Country	US
Kind code	B2
Filing date	Dec 28, 2012
Priority date	Dec 28, 2011
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

The present invention is provided with: a traveling state detection means that detects the traveling state of a vehicle; a target attitude control amount computation means that computes the target attitude control amount of the vehicle on the basis of the traveling state; a attitude control amount computation means that computes the attitude control amount controlled by an actuator other than a shock absorber on the basis of the target attitude control amount; and an damping force control means that controls the damping force of the shock absorber on the basis of the target attitude control amount and the attitude control amount.

First claim

The invention claimed is:

1. A control apparatus for a vehicle, comprising:
a traveling-state detector configured to detect a traveling state of the vehicle;
a target attitude control amount calculation unit configured to calculate a target attitude control amount of a vehicle body based on the traveling state;
an attitude control amount calculation unit configured to calculate an attitude control amount controlled by at least one of a driving force control unit and a braking force control unit and based on the target attitude control amount; and
a damping force control unit configured to control a damping force of a shock absorber based on the target attitude control amount and the attitude control amount, wherein the damping force control unit calculates a damping force attitude control amount obtained by excluding the attitude control amount from the target attitude control amount, and controls the damping force based on this damping force attitude control amount.

2. The control apparatus for a vehicle according to claim 1 , wherein the attitude control amount calculation unit has a limit value for limiting the attitude control amount to a predetermined value.

3. The control apparatus for a vehicle according to claim 1 , wherein the attitude control amount is a braking force attitude control amount of braking force controlled by the braking force control unit.

4. The control apparatus for a vehicle according to claim 1 , wherein the attitude control amount is a driving force attitude control amount of driving force controlled by the driving force control unit.

5. The control apparatus for a vehicle according to claim 1 ,
wherein the attitude control amount is a braking force attitude control amount of braking force controlled by the braking force control unit and a driving force attitude control amount of driving force controlled by the driving force control unit,
wherein the attitude control amount calculation unit calculates the driving force attitude control amount based on the target attitude control amount and the braking force attitude control amount, and
wherein the damping force control unit controls a damping force of a shock absorber based on the target attitude control amount, the driving force attitude control amount, and the braking force attitude control amount.

6. The control apparatus for a vehicle according to claim 5 , wherein the attitude control amount calculation unit calculates the driving force attitude control amount based on a value obtained by excluding the braking force attitude control amount from the target attitude control amount.

7. The control apparatus for a vehicle according to claim 5 , wherein the driving force of the vehicle is an engine driving force.

8. The control apparatus for a vehicle according to claim 1 ,
wherein the attitude control amount is a braking force attitude control amount of braking force controlled by the braking force control unit and a driving force attitude control amount of driving force controlled by the driving force control unit,
wherein the attitude control amount calculation unit calculates the braking force attitude control amount based on the target attitude control amount and the driving force attitude control amount, and
wherein the damping force control unit controls a damping force of a shock absorber based on the target attitude control amount, the driving force attitude control amount, and the braking force attitude control amount.

9. The control apparatus for a vehicle according to claim 8 , wherein the attitude control amount calculation unit calculates the braking force attitude control amount based on a value obtained by excluding the driving force attitude control amount from the target attitude control amount.

10. The control apparatus for a vehicle according to claim 8 , wherein the driving force of the vehicle is a motor.

11. The control apparatus for a vehicle according to claim 5 , wherein the damping force control unit calculates a damping force attitude control amount obtained by excluding the driving force attitude control amount and the braking force attitude control amount from the target attitude control amount, and controls the damping force based on this damping force attitude control amount.

12. The control apparatus for a vehicle according to claim 5 , wherein the attitude control amount calculation unit has a limit value for limiting the braking force attitude control amount to a predetermined value.

13. The control apparatus for a vehicle according to claim 5 , wherein the attitude control amount calculation unit has a limit value for limiting the driving force attitude control amount to a predetermined value.

14. The control apparatus for a vehicle according to claim 1 , wherein the traveling-state detector is a unit configured to detect movement of a sprung portion.

15. The control apparatus for a vehicle according to claim 14 , wherein the target attitude control amount calculation unit calculates a control amount for suppressing the movement of the sprung portion as a target attitude control amount.

16. The control apparatus for a vehicle according to claim 15 , wherein the traveling-state detector is a unit configured to detect a pitch rate of the vehicle, and
wherein the target attitude control amount calculation unit calculates the target attitude control amount based on the detected pitch rate.

17. The control apparatus for a vehicle according to claim 1 , wherein the traveling-state detector estimates a traveling state based on a change in wheel speed.

18. The control apparatus for a vehicle according to claim 1 , wherein the attitude control amount calculation unit calculates a vehicle body attitude control amount based on a skyhook control rule.

19. The control apparatus for a vehicle according to claim 1 , wherein the damping force control unit controls a damping force based on a skyhook control rule.

20. The control apparatus for a vehicle according to claim 1 , wherein the traveling-state detector estimates a traveling state based on an active skyhook model that can be estimated regardless of signs of a sprung speed and a stroke speed.

Assignees

• Nissan Motor

Inventors

• Kikuchi Hironobu
• Hirayama Katsuhiko

Classifications

• B60W2710/226

  Damping · CPC title

• B60G2400/39

  Brake pedal position · CPC title

• B60W10/04

  including control of propulsion units · CPC title

• B60G2400/104

  lateral or transversal with regard to vehicle · CPC title

• B60W10/184

  with wheel brakes · CPC title