VEHICLE DAMPING CONTROL APPARATUS

• US 20130080013A1
• Filed: 05/16/2011
• Published: 03/28/2013
• Est. Priority Date: 05/31/2010
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Kobayashi, Yosuke, Ohta, Mitsunori
• Granted Patent: US 8,874,314 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60G 17/08 Characteristics of fluid dampers adjusting fluid dampers in general F16F9/44 - F16F9/53
• CPC Class Codes: B60G 2400/208 of wheel rotation
• CPC Class Codes: B60G 2400/33 Throttle position
• CPC Class Codes: B60G 2400/39 Brake pedal position
• CPC Class Codes: B60G 2500/10 Damping action or damper
• CPC Class Codes: B60T 8/17555 specially adapted for enhancing driver or passenger comfort, e.g. soft intervention or pre-actuation strategies
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/188 hydraulic brakes
• CPC Class Codes: B60W 2520/28 Wheel speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 2710/182 Brake pressure, e.g. of fluid or between pad and disc
• CPC Class Codes: B60W 2720/16 Pitch
• CPC Class Codes: B60W 30/02 Control of vehicle driving stability
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline
• CPC Class Codes: B60W 50/087 where the control system corrects or modifies a request from the driver

Abstract

A vehicle damping control apparatus is basically provided with a braking/accelerating torque generating component, a corrective torque calculating component, a corrective torque command value output component and a priority level setting component. The braking/accelerating torque generating component is configured to generate braking/accelerating torque in a wheel. The corrective torque calculating component is configured to calculate a corrective torque to suppress vehicle pitching vibration and vehicle bouncing vibration. The corrective torque command value output component is configured to output a corrective torque command value to the braking/accelerating torque generating component based on the corrective torque. The priority level setting component is configured to set a priority level for calculating the corrective torque command value such that vehicle bouncing vibration is suppressed with priority over vehicle pitching vibration.

Claims

1. A vehicle damping control apparatus comprising:

a braking/accelerating torque generating component configured to generate braking/accelerating torque in a wheel;

a corrective torque calculating component configured to calculate a corrective torque to suppress vehicle pitching vibration and vehicle bouncing vibration;

a corrective torque command value output component configured to output a corrective torque command value to the braking/accelerating torque generating component based on the corrective torque; and

a priority level setting component configured to set a priority level used in calculating the corrective torque command value such that the vehicle bouncing vibration is suppressed to a greater extent than the vehicle pitching vibration in the corrective torque command value.

2. The vehicle damping control apparatus according to claim 1, further comprising

a braking/accelerating torque sensing component configured to sense the braking/accelerating torque;

and

a wheel velocity sensing component configured to sense wheel velocity;

the corrective torque calculating component including

a first corrective torque computing component configured to compute a first corrective torque to suppress the vehicle pitching vibration and the vehicle bouncing vibration based on the braking/accelerating torque; and

a second corrective torque computing component configured to compute a second corrective torque to suppress the vehicle pitching vibration and the vehicle bouncing vibration of the vehicle based on wheel velocity;

the corrective torque command value output component configured to compute a corrective torque command value based on the first corrective torque, the second corrective torque and the priority level; and

the priority level setting component sets the priority level in the first corrective torque such that the vehicle bouncing vibration is suppressed with priority in a higher amount over the vehicle pitching vibration, as compared with the priority level in the second corrective torque.

3. The vehicle damping control apparatus according to claim 1, wherein

the priority level setting component sets the priority level such that a priority level value is used in calculating the corrective torque command value in which the vehicle bouncing vibration is suppressed and such that the priority level value is used in calculating the corrective torque command value in which the vehicle pitching vibration is excited.

4. The vehicle damping control apparatus according to claim 2, wherein

the priority level setting component sets the priority level such that a priority level value is used in calculating the corrective torque command value in which the vehicle bouncing vibration is suppressed and such that the priority level value is used in calculating the corrective torque command value in which the vehicle pitching vibration is excited.