Vehicle integration control system and program

• US 7,457,697 B2
• Filed: 12/21/2004
• Issued: 11/25/2008
• Est. Priority Date: 12/24/2003
• Status: Expired due to Fees

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Fujii, Takehito, Sawada, Mamoru, Matsumoto, Toshiki, Tashiro, Tsutomu, Kataoka, Motoaki, Mabuchi, Mamoru
• Primary Examiner(s): Black; Thomas G
• Assistant Examiner(s): Olsen; Lin B
• Application Number:
  US11/020,003
• Publication Number:
  US 20050143896A1
• Time in Patent Office: 1,435 Days
• Field of Search: 701/42, 701/48, 701/53, 701/61, 701/69, 180/400, 477/34
• US Class Current: 701/48
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2050/0006 Digital architecture hierarchy
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: B60W 30/188 Controlling power parameters of the driveline, e.g. determining the required power
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline

Abstract

A vehicle integration control system includes a manager controller and a driving system controller. The manager controller sets a target generation driving force guide value for a driving force outputted from a driving system of a vehicle. The driving system controller controls the driving force on the basis of the target generation driving force guide value. The manager controller includes a driver request value setter and a driving force corrector. The driver request value setter sets a driver request generation driving force value corresponding to the driving force outputted from the driving system on the basis of a driver'"'"'s input. The driving force corrector corrects the driver request generation driving force value on the basis of a predetermined program to restrain vibration generated in the vehicle when the driving force outputted from the driving system.

Claims

1. A vehicle integration control system comprising:

a manager controller for setting a target generation driving force guide value as a guide value for a driving force outputted from a driving system of a vehicle; and

a driving system controller for controlling the driving force outputted from said driving system on the basis of the target generation driving force guide value set by said manager controller;

wherein said manager controller includes;

a driver request value setter for setting a driver request generation driving force value corresponding to the driving force outputted from said driving system on the basis of driving force request information of said driving system inputted by a driver of said vehicle;

a driving force corrector which corrects said driver request generation driving force value on the basis of a predetermined program to restrain vibration generated in said vehicle when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter and sets the value obtained by this correction as said target generation driving force guide value;

a vehicle state determiner to determine a determined value of a front wheel vehicle body forward-backward force representing a sum total of reaction force of the vehicle body forward-backward direction applied to a tire grounding face of a front wheel of said vehicle, a determined value of a rear wheel vehicle body forward-backward force representing a sum total of reaction force of the vehicle body forward-backward direction applied to a tire grounding face of a rear wheel of said vehicle, at least one of a determined value of a crewmember head portion displacement amount representing a vertical direction movement amount of a head portion position of the crewmember of said vehicle, and a determined value of a vehicle body pitch angle of said vehicle; and

said driving force corrector corrects said driver request generation driving force value on the basis of the determined values obtained by said vehicle state determiner and sets the value obtained by this correction as said target generation driving force guide value.

2. The vehicle integration control system according to claim 1, wherein the vehicle integration control system further comprises a vehicle speed detector for detecting the vehicle body speed of the vehicle, and

said driver request value setter sets the driver request generation driving force value corresponding to the driving force outputted from said driving system on the basis of the vehicle body speed detected by said vehicle speed detector in addition to said driving force request information.

3. The vehicle integration control system according to claim 1, wherein

said target generation driving force guide value is a value corresponding to the driving force outputted to a drive shaft through a transmission from a driving source for generating the driving force of said vehicle,

speed changing ratio detector for detecting the speed changing ratio of said transmission is arranged,

said manager controller having a driving source driving force determiner for determining a driving source driving force command value corresponding to the driving force outputted by said driving source on the basis of said target generation driving force guide value and the speed changing ratio detected by said speed changing ratio detector, and

said driving system controller controls the driving force outputted by said driving source on the basis of the driving source driving force command value determined by said driving source driving force determiner.

4. The vehicle integration control system according to claim 1, further comprising:

a front wheel lateral force determiner for determining a front wheel lateral force representing a sum total of lateral forces applied to the respective front wheels of said vehicle; and

a steering angle detector for detecting a steering angle of the front wheel of said vehicle; and

said vehicle state determiner determining the determined value of said front wheel vehicle body forward-backward force on the basis of the following arithmetic formula;

Ffw=Fyf·

sin δ

,

wherein Ffw is the front wheel vehicle body forward-backward force, Fyf is the front wheel lateral force determined by said front wheel lateral force determiner, and δ

is the steering angle detected by said steering angle detector.

5. The vehicle integration control system according to claim 1, further comprising:

a rear wheel brake torque detector for detecting a sum of brake torques applied to the respective rear wheels of said vehicle; and

said vehicle state determiner determines the determined value of said rear wheel vehicle body forward-backward force on the basis of the following arithmetic formula;

Frw=Fwr−

Tb·

r−

R

wherein Frw is the rear wheel vehicle body forward-backward force, Fwr is the driver request generation driving force value set by said driver request value setter, Tb is the sum of the brake torques applied to the respective rear wheels of said vehicle detected by said rear wheel brake torque detector, r is a predetermined tire radius of each rear wheel, and R is a predetermined sum of rolling resistance forces applied to the respective rear wheels.

6. The vehicle integration control system according to claim 1, further comprising:

a front wheel suspension displacement amount detector for detecting the amount of displacement of a suspension device arranged in the front wheel of said vehicle; and

a rear wheel suspension displacement amount detector for detecting the amount of displacement of a suspension device arranged in the rear wheel of said vehicle; and

said vehicle state determiner determines the determined value of said crewmember head portion displacement amount on the basis of the following arithmetic formula;

dh=(hsf·

Lhr+hsr·

Lhf)/(Lhf+Lhr)

wherein dh is the crewmember head portion displacement amount and hsf is the suspension displacement amount of the suspension device arranged in the front wheel of said vehicle detected by said front wheel suspension displacement amount detector, hsr is the suspension displacement amount of the suspension device arranged in the rear wheel of said vehicle detected by said rear wheel suspension displacement amount detector, Lhf is the predetermined forward-backward direction distance from the head portion position of the crewmember of said vehicle to the position of the suspension device of the front wheel of said vehicle, and Lhr is the predetermined forward-backward direction distance from the head portion position of the crewmember of said vehicle to the position of the suspension device of the rear wheel of said vehicle, and

wherein said vehicle state determiner determines at least the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said crewmember head portion displacing amount.

7. The vehicle integration control system according to claim 1, further comprising:

a front wheel suspension displacement amount detector for detecting the suspension displacement amount of a suspension device arranged in the front wheel of said vehicle; and

a rear wheel suspension displacement amount detector for detecting the suspension displacement amount of a suspension device arranged in the rear wheel of said vehicle; and

said vehicle state determiner determines the determined value of said vehicle body pitch angle on the basis of the following arithmetic formula;

θ

=(hsf−

hsr)/L,

wherein θ

is the vehicle body pitch angle, hsf is the suspension displacement amount of the suspension device arranged in the front wheel of said vehicle detected by said front wheel suspension displacement amount detector, hsr is the suspension displacement amount of the suspension device arranged in the rear wheel of said vehicle detected by said rear wheel suspension displacement amount detector, L is the predetermined length between the position of the suspension device arranged in the front wheel of said vehicle and the position of the suspension device arranged in the rear wheel of said vehicle, and

wherein said vehicle state determiner determines at least the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said vehicle body pitch angle.

8. The vehicle integration control system according to claim 1, wherein

said driving force corrector determines a value after the correction of said driver request generation driving force value for restraining the displacement of the head portion of the crewmember of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter and sets said target generation driving force guide value on the basis of the value after the correction.

9. The vehicle integration control system according to claim 8, wherein

said driving force corrector includes a crewmember vibration damping correcting value determiner for determining a crewmember vibration damping driving force correcting value representing a correcting value of said driver request generation driving force value for restraining the displacement of the head portion of the crewmember of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter, and

said driving force corrector corrects said driver request generation driving force value on the basis of the crewmember vibration damping driving force correcting value determined by said crewmember vibration damping correcting value determiner.

10. The vehicle integration control system according to claim 1, wherein

said vehicle state determiner determines at least the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said crewmember head portion displacing amount, and

said driving force corrector includes a crewmember vibration damping correcting value determiner for determining the crewmember vibration damping driving force correcting value representing a correcting value of said driver request generation driving force value for restraining the displacement of the head portion of the crewmember of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter by using the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said crewmember head portion displacement amount obtained by said vehicle state determiner, and

said driving force corrector corrects said driver request generation driving force value on the basis of the crewmember vibration damping driving force correcting value determined by said crewmember vibration damping correcting value determiner.

11. The vehicle integration control system according to claim 10, wherein

said crewmember vibration damping correcting value determiner includes:

a crewmember vibration damping foreknowledge correcting value determiner for determining a crewmember vibration damping driving force foreknowledge correcting value as a correcting value of said driver request generation driving force value for restraining the displacement of the head portion of the crewmember of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter by using the determined value of said front wheel vehicle body forward-backward force and the determined value of said rear wheel vehicle body forward-backward force obtained by said vehicle state determiner,

a crewmember vibration damping feedback correcting value determiner for determining a crewmember vibration damping driving force feedback correcting value as a feedback correcting value of said crewmember vibration damping driving force foreknowledge correcting value determined by said crewmember vibration damping foreknowledge correcting value determiner by using the determined value of said crewmember head portion displacement amount obtained by said vehicle state determiner, and

a crewmember vibration damping correcting value calculator for determining said crewmember vibration damping driving force correcting value by correcting said crewmember vibration damping driving force foreknowledge correcting value determined by said crewmember vibration damping foreknowledge correcting value determiner by said crewmember vibration damping driving force feedback correcting value determined by said crewmember vibration damping feedback correcting value determiner.

12. The vehicle integration control system according to claim 1, wherein

said driving force corrector determines a value after the correction of said driver request generation driving force value for restraining the vehicle body vibration of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter and sets said target generation driving force guide value on the basis of the value after the correction.

13. The vehicle integration control system according to claim 12, wherein

said driving force corrector has vehicle body vibration damping correcting value determiner for determining a vehicle body vibration damping driving force correcting value as a correcting value of said driver request generation driving force value for restraining the vehicle body vibration of said vehicle generated in the changing case of the driving force outputted from said driving system on the basis of the driver request generation driving force value set by said driver request value setter, and

said driving force corrector corrects said driver request generation driving force value on the basis of the vehicle body vibration damping driving force correcting value determined by said vehicle body vibration damping correcting value determiner.

14. The vehicle integration control system according to claim 1, wherein

said vehicle state determiner determines at least the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said vehicle body pitch angle, and

said driving force corrector has vehicle body vibration damping correcting value determiner for determining the vehicle body vibration damping driving force correcting value as a correcting value of said driver request generation driving force value for restraining the vehicle body vibration of said vehicle generated when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter by using the determined value of said front wheel vehicle body forward-backward force, the determined value of said rear wheel vehicle body forward-backward force, and the determined value of said vehicle body pitch angle obtained by said vehicle state determiner, and

said driving force corrector corrects said driver request generation driving force value on the basis of the vehicle body vibration damping driving force correcting value determined by said vehicle body vibration damping correcting value determiner.

15. The vehicle integration control system according to claim 14, wherein

said vehicle body vibration damping correcting value determiner includes:

a vehicle body vibration damping foreknowledge correcting value determiner for determining the vehicle body vibration damping driving force foreknowledge correcting value as a correcting value of said driver request generation driving force value for restraining the vehicle body vibration of said vehicle generated in the changing case of the driving force outputted from said driving system on the basis of the driver request generation driving force value set by said driver request value setter by using the determined value of said front wheel vehicle body forward-backward force and the determined value of said rear wheel vehicle body forward-backward force obtained by said vehicle state determiner;

a vehicle body vibration damping feedback correcting value determiner for determining the vehicle body vibration damping driving force feedback correcting value as a feedback correcting value of said vehicle body vibration damping driving force foreknowledge correcting value determined by said vehicle body vibration damping foreknowledge correcting value determiner by using the determined value of said vehicle body pitch angle obtained by said vehicle state determiner; and

a vehicle body vibration damping correcting value calculator for determining said vehicle body vibration damping driving force correcting value by correcting said vehicle body vibration damping driving force foreknowledge correcting value determined by said vehicle body vibration damping foreknowledge correcting value determiner by said vehicle body vibration damping driving force feedback correcting value determined by said vehicle body vibration damping feedback correcting value determiner.

16. The vehicle integration control system according to claim 1, wherein

said driving force corrector determines a value after the correction of said driver request generation driving force value for restraining torsional vibration generated in a drive shaft for transmitting the driving force of a driving source for generating the driving force of said vehicle to a drive wheel of said vehicle when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter and sets said target generation driving force guide value on the basis of the value after the correction.

17. The vehicle integration control system according to claim 16, further comprising:

a drive wheel rotating speed detector for detecting the rotating speed of each drive wheel of said vehicle; and

a drive shaft rotating speed detector for detecting the rotating speed of the drive shaft for transmitting the driving force of said driving source to the drive wheel of said vehicle; and

said driving force corrector including a value determiner after the driving system vibration damping correction for determining a driver request generation driving force value after the driving system vibration damping correction as a value after the correction of said driver request generation driving force value for restraining the torsional vibration generated in the drive shaft for transmitting the driving force of said driving source to the drive wheel of said vehicle when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value set by said driver request value setter by using the driver request generation driving force value set by said driver request value setter, the rotating speed of each drive wheel detected by said drive wheel rotating speed detector, and the rotating speed of the drive shaft detected by said drive shaft rotating speed detector; and

said driving force corrector sets said target generation driving force guide value on the basis of the driver request generation driving force value after the driving system vibration damping correction determined by said value determiner.

18. The vehicle integration control system according to claim 17, wherein

said value determiner after the driving system vibration damping correction includes:

a value determiner after the driving system vibration damping foreknowledge correction for determining a driver request generation driving force value after the driving system vibration damping foreknowledge correction as a value after the correction of said driver request generation driving force value for restraining the torsional vibration generated in the drive shaft for transmitting the driving force of said driving source to the drive wheel of said vehicle when the driving force outputted from said driving system changes on the basis of the driver request generation driving force value by using the driver request generation driving force value set by said driver request value setter;

a driving system vibration damping feedback correcting value determiner for determining the driving system vibration damping driving force feedback correcting value as a feedback correcting value of said driver request generation driving force value after the driving system vibration damping foreknowledge correction determined by said value determiner after the driving system vibration damping foreknowledge correction by using the rotating speed of said each drive wheel detected by said drive wheel rotating speed detector and the rotating speed of said drive shaft detected by said drive shaft rotating speed detector; and

a driver request value calculator after the driving system vibration damping correction for determining said driver request generation driving force value after the driving system vibration damping correction by correcting the driver request generation driving force value after the driving system vibration damping foreknowledge correction determined by said value determiner after the driving system vibration damping foreknowledge correction by said driving system vibration damping driving force feedback correcting value determined by said driving system vibration damping feedback correcting value determiner.

19. The vehicle integration control system according to claim 18, wherein

said driving system vibration damping feedback correcting value determiner calculates a torsional amount corresponding value of said drive shaft showing the degree of torsion generated in said drive shaft on the basis of the following arithmetic formula:

Sc=N3−

(Kdiff/2)·

(Vwdl+Vwdr),

wherein Sc is the torsional amount corresponding value of said drive shaft showing the degree of torsion generated in said drive shaft, N3 is the rotating, speed of said drive shaft detected by said drive shaft rotating speed detector, Vwdl is the rotating speed of a left drive wheel of said vehicle detected by said drive wheel rotating speed detector, Vwdr is the rotating speed of a right drive wheel of said vehicle detected by said drive wheel rotating speed detector, and Kdiff is a predetermined gear ratio of a differential gear of said vehicle and determines said driving system vibration damping driving force feedback correcting value by using this torsional amount corresponding value.