VIBRATION-DAMPING CONTROLLING APPARATUS

• US 20120065826A1
• Filed: 05/13/2009
• Published: 03/15/2012
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kinoshita, Gohki, Muta, Koichiro, Fukushiro, Eiji, Oyama, Shunsuke, Aoki, Takanori, Kimura, Akihiro, Yamamoto, Masaya, Hashimoto, Toshiya
• Granted Patent: US 9,045,033 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 2240/647 Surface situation of road, e.g. type of paving
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2422/40 on a damper
• CPC Class Codes: B60W 2510/22 Suspension systems
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2510/246 Temperature
• CPC Class Codes: B60W 2552/35 Road bumpiness, e.g. potholes
• CPC Class Codes: B60W 30/025 related to comfort of drivers or passengers
• CPC Class Codes: B60W 30/20 Reducing vibrations in the driveline
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A sprung vibration damping for suppressing sprung vibration which is generated to a vehicle by an input from a road surface to wheels provided with the vehicle by controlling a torque of a motor, and the sprung vibration damping is subjected to a restriction including a prohibition in response to a state of) battery, which supplies power to the motor, such as a voltage and a temperature of the battery or a state of a control, which affects the power of the battery, such as a charge/discharge amount feedback control and the like.

Claims

1. A vibration-damping controlling apparatus for suppressing sprung vibration generated to a vehicle by an input from a road surface to wheels provided with the vehicle by controlling a driving force of the vehicle, wherein

a sprung vibration damping as a suppression of the sprung vibration is executed by controlling a torque of a motor disposed as a power source when at least the vehicle travels, and

the sprung vibration damping, which is executed by controlling the torque of the motor, is restricted in response to a state of a battery which supplies power to the motor or to a state of a control which makes an influence on a power of the battery.

2. The vibration-damping controlling apparatus according to claim 1, wherein the vehicle further includes an internal combustion engine as a power source in traveling, and

the sprung vibration damping is restricted at a time at which the internal combustion engine starts or stops.

3. The vibration-damping controlling apparatus according to claim 2, wherein the sprung vibration damping is restricted at the time at which the internal combustion engine starts or stops as well as when a voltage of the battery is equal to or more than an upper limit threshold value or equal to or less than a lower limit threshold value.

4. The vibration-damping controlling apparatus according to claim 3, wherein the upper limit threshold value and the lower limit threshold value of the voltage of the battery are changed by a temperature of the battery.

5. The vibration-damping controlling apparatus according to claim 2, wherein the sprung vibration damping is restricted at the time at which the internal combustion engine starts or stops as well as when a current of the battery is equal to or more than an upper limit threshold value or equal to or less than a lower limit threshold value.

6. The vibration-damping controlling apparatus according to claim 5, wherein the upper limit threshold value and the lower limit threshold value of the current of the battery are changed by the temperature of the battery.

7. The vibration-damping controlling apparatus according to claim 1, wherein the vehicle includes an internal combustion engine as a power source in traveling and a purification unit that purifies an exhaust gas exhausted from the internal combustion engine, and

the sprung vibration damping is restricted when a warming requirement of the purification unit is made.

8. The vibration-damping controlling apparatus according to claim 1, wherein the sprung vibration damping is restricted when the temperature of the battery is equal to or more than an upper limit threshold value or equal to or less than a lower limit threshold value.

9. The vibration-damping controlling apparatus according to claim 1, wherein the vehicle includes a self-failure diagnosis controlling unit that executes a self-failure diagnosis control, and

the sprung vibration damping is restricted when the self-failure diagnosis control is executed.

10. The vibration-damping controlling apparatus according to claim 1, wherein the vehicle includes a charge/discharge amount feedback controlling unit that executes a charge/discharge amount feedback control as a control for adjusting a charge amount to the battery and a discharge amount from the battery in response to a charge amount of the battery, and

the sprung vibration damping is restricted while the charge/discharge amount feedback control is executed.

11. The vibration-damping controlling apparatus according to claim 10, wherein while the sprung vibration damping is executed, the charge/discharge amount feedback control is restricted.