Vehicle controlling apparatus

• US 8,478,503 B2
• Filed: 01/13/2009
• Issued: 07/02/2013
• Est. Priority Date: 01/13/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Otsuka, Takayuki
• Primary Examiner(s): ARTHUR JEANGLAUDE, GERTRUDE
• Application Number:
  US12/994,625
• Publication Number:
  US 20110077835A1
• Time in Patent Office: 1,631 Days
• Field of Search: 701/37, 701/38, 701/99, 280/5.5, 280/5.507, 280/5.512
• US Class Current: 701/99
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 2520/16 Pitch
• CPC Class Codes: B60W 2540/16 Ratio selector position
• CPC Class Codes: B60W 2552/35 Road bumpiness, e.g. potholes
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 2710/105 Output torque
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for

Abstract

A vehicle controlling apparatus that performs vehicle body vibration-damping control to suppress vibration occurring in a vehicle body by changing wheel torque of driving wheels by controlling output torque of an engine, wherein an electronic control unit is provided with a vehicle body vibration-damping control inhibiting unit that inhibits the vehicle body vibration-damping control such that a drive system of a vehicle, which transmits power of the engine, does not resonate with execution of the vehicle body vibration-damping control, or/and a vehicle body vibration-damping control adjusting unit that adjusts a control amount of the vehicle body vibration-damping control in a direction to suppress a vibration-damping suppression effect of the vehicle body vibration-damping control.

Claims

1. A vehicle controlling apparatus that performs vehicle body vibration-damping control to suppress vibration occurring in a vehicle body by changing wheel torque of a driving wheel by controlling output torque of a power source, wherein

the vehicle controlling apparatus inhibits the vehicle body vibration-damping control such that a drive system of a vehicle, which transmits power of the power source, does not resonate with execution of the vehicle body vibration-damping control, or adjusts a control amount of the vehicle body vibration-damping control in a direction to suppress a vibration suppression effect of the vehicle body vibration-damping control, and

the vehicle controlling apparatus compares a change amount of predicted output shaft rotational number of the power source according to a change amount of a predicted output torque of the power source when executing the vehicle body vibration-damping control with a change amount of an actual output shaft rotational number of the power source within a change period of the predicted output torque to judge that the drive system resonates when the change amount of the actual output shaft rotational number is larger than the change amount of the predicted output shaft rotational number, and performs inhibiting operation of the vehicle body vibration-damping control or adjusting operation of the control amount of the vehicle body vibration-damping control when it is judged that the drive system resonates.

2. The vehicle controlling apparatus according to claim 1, wherein the vehicle controlling apparatus releases inhibiting operation of the vehicle body vibration-damping control or adjusting operation of the control amount of the vehicle body vibration-damping control when a control condition of the drive system is changed.

3. The vehicle controlling apparatus according to claim 1, wherein the vehicle controlling apparatus releases inhibiting operation of the vehicle body vibration-damping control or adjusting operation of the control amount of the vehicle body vibration-damping control when a gear position of a transmission is changed.

4. The vehicle controlling apparatus according to claim 1, wherein the vehicle controlling apparatus releases inhibiting operation of the vehicle body vibration-damping control or adjusting operation of the control amount of the vehicle body vibration-damping control when actual output torque of the power source changes by a predetermined amount or larger.

5. The vehicle controlling apparatus according to claim 1, wherein the control amount of the vehicle body vibration-damping control is adjusted by correction of a gain used when setting the control amount.

6. A vehicle controlling apparatus that performs vehicle body vibration-damping control to suppress vibration occurring in a vehicle body by changing wheel torque of a driving wheel by controlling output torque of a power source, wherein

the vehicle controlling apparatus compares a change amount of predicted output torque of the power source when executing the vehicle body vibration-damping control with a change amount of actual output torque of the power source within a change period of the predicted output torque, and inhibits the vehicle body vibration-damping control or adjusts a control amount of the vehicle body vibration-damping control in a direction to suppress a vibration suppression effect of the vehicle body vibration-damping control when the change amount of the actual output torque is larger than the change amount of the predicted output torque, and

the vehicle controlling apparatus compares a change amount of predicted output shaft rotational number of the power source according to a change amount of a predicted output torque of the power source when executing the vehicle body vibration-damping control with a change amount of an actual output shaft rotational number of the power source within a change period of the predicted output torque to judge that the drive system resonates when the change amount of the actual output shaft rotational number is larger than the change amount of the predicted output shaft rotational number, and performs inhibiting operation of the vehicle body vibration-damping control or adjusting operation of the control amount of the vehicle body vibration-damping control when it is judged that the drive system resonates.

7. A vehicle controlling apparatus that performs vehicle body vibration-damping control to suppress vibration occurring in a vehicle body by changing wheel torque of a driving wheel by controlling output torque of a power source, the vehicle controlling apparatus comprising:

a vehicle body vibration-damping control inhibiting unit that inhibits the vehicle body vibration-damping control such that a drive system of a vehicle, which transmits power of the power source, does not resonate with execution of the vehicle body vibration-damping control;

or/and

a vehicle body vibration-damping control amount adjusting unit that adjusts a control amount of the vehicle body vibration-damping control in a direction to suppress a vibration suppression effect of the vehicle body vibration-damping control, and

a drive system resonance judging unit that compares a change amount of predicted output toque of the power source when executing the vehicle body vibration-damping control with a change amount of actual output torque of the power source within a change period of the predicted output torque to judge that the drive system resonates with the execution of the vehicle body vibration-damping control when the change amount of the actual output torque is larger than the change amount of the predicted output torque, wherein

the vehicle controlling apparatus is configured to perform inhibiting operation of the vehicle body vibration-damping control by the vehicle body vibration-damping control inhibiting unit or/and adjusting operation of the control amount of the vehicle body vibration-damping control by the vehicle body vibration-damping control amount adjusting unit when the drive system resonance judging unit judges that the drive system resonates.

8. The vehicle controlling apparatus according to claim 7, further comprising:

a drive system resonance judging unit that compares a change amount of a predicted output shaft rotational number of the power source according to a change amount of predicted output torque of the power source when executing the vehicle body vibration-damping control with a change amount of an actual output shaft rotational number of the power source within a change period of the predicted output torque to judge that the drive system resonates with the execution of the vehicle body vibration-damping control when the change amount of the actual output shaft rotational number is larger than the change amount of the predicted output shaft rotational number, wherein

the vehicle controlling apparatus is configured to perform inhibiting operation of the vehicle body vibration-damping control by the vehicle body vibration-damping control inhibiting unit or/and adjusting operation of the control amount of the vehicle body vibration-damping control by the vehicle body vibration-damping control amount adjusting unit when the drive system resonance judging unit judges that the drive system resonates.

9. The vehicle controlling apparatus according to claim 7, further comprising:

a vehicle body vibration-damping control returning unit that releases inhibiting operation of the vehicle body vibration-damping control by the vehicle body vibration-damping control inhibiting unit or adjusting operation of the control amount of the vehicle body vibration-damping control by the vehicle body vibration-damping control amount adjusting unit when a control condition of the drive system is changed.

10. The vehicle controlling apparatus according to claim 7, further comprising:

a vehicle body vibration-damping control returning unit that releases inhibiting operation of the vehicle body vibration-damping control by the vehicle body vibration-damping control inhibiting unit or adjusting operation of the control amount of the vehicle body vibration-damping control by the vehicle body vibration-damping control amount adjusting unit when a gear position of a transmission is changed.

11. The vehicle controlling apparatus according to claim 7, further comprising:

a vehicle body vibration-damping control returning unit that releases inhibiting operation of the vehicle body vibration-damping control by the vehicle body vibration-damping control inhibiting unit or adjusting operation of the control amount of the vehicle body vibration-damping control by the vehicle body vibration-damping control amount adjusting unit when actual output torque of the power source changes by a predetermined amount or larger.

12. The vehicle controlling apparatus according to claim 7, wherein the vehicle body vibration-damping control amount adjusting unit is configured to adjust the control amount by correction of a gain used when setting the control amount of the vehicle body vibration-damping control.