BRAKING/DRIVING FORCE CONTROL DEVICE

• US 20150175140A1
• Filed: 07/26/2012
• Published: 06/25/2015
• Est. Priority Date: 07/26/2012
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Shimizu, Satoshi
• Application Number:
  US14/416,085
• Publication Number:
  US 20150175140A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60T 2240/07 Tire tolerance compensation
• CPC Class Codes: B60T 2270/413 Plausibility monitoring, cross check, redundancy
• CPC Class Codes: B60T 8/171 Detecting parameters used in the regulation; Measuring values used in the regulation
• CPC Class Codes: B60T 8/172 Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters B60T8/17551 takes precedence
• CPC Class Codes: B60T 8/245 Longitudinal vehicle inclination
• CPC Class Codes: B60T 8/268 using the valves of an ABS, ASR or ESP system
• CPC Class Codes: B60T 8/76 two or more sensing means from different wheels indicative of the same type of speed condition
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/188 hydraulic brakes
• CPC Class Codes: B60W 2520/28 Wheel speed
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: B60W 40/076 Slope angle of the road
• CPC Class Codes: B60W 40/105 Speed

Abstract

An electronic control unit includes a braking/driving force control unit configured to control a braking/driving force of a vehicle based on a detected wheel speed, a wheel speed correcting unit configured to correct a detected wheel speed of a certain wheel based on the wheel speed and a wheel speed of another wheel, and a correction prohibiting unit configured to prohibit execution of a correction control of a wheel speed by the wheel speed correcting unit while travelling on a slope road. Whether or not a travelling path of an own vehicle is a slope road is desirably determined based on a difference between an estimated vehicle body acceleration/deceleration estimated from vehicle body speed information and a detected vehicle body acceleration/deceleration detected with a vehicle body front-back acceleration sensor, or based on an output value of a power source.

Claims

1. A braking/driving force control device comprising:

a braking/driving force control unit configured to control a braking/driving force of a vehicle based on a detected wheel speed;

a wheel speed correcting unit configured to correct a detected wheel speed of a certain wheel based on the wheel speed and a wheel speed of another wheel; and

a correction prohibiting unit configured to prohibit execution of a correction control of the wheel speed by the wheel speed correcting unit while travelling on a slope road.

2. The braking/driving force control device according to claim 1, wherein

the correction prohibiting unit prohibits the execution of the correction control of the wheel speed by the wheel speed correcting unit while steady travelling on the slope road.

3. The braking/driving force control device according to claim 1, wherein

the correction prohibiting unit prohibits the execution of the correction control of the wheel speed by the wheel speed correcting unit at the time a slip ratio of either one of a drive wheel or a driven wheel becomes higher than a slip ratio of the other wheel while travelling on the slope road or at the time only one of either the drive wheel or the driven wheel shows a lock tendency while travelling on the slope road.

4. The braking/driving force control device according to claim 1, wherein

whether or not a travelling path of an own vehicle is a slope road is determined based on a difference between an estimated vehicle body acceleration/deceleration estimated from vehicle body speed information and a detected vehicle body acceleration/deceleration detected by a vehicle body front-back acceleration sensor, or based on an output value of a power source.

5. The braking/driving force control device according to claim 1, wherein

the braking/driving force control unit carries out a control of the braking/driving force at the time of the execution of a vehicle control.

6. The braking/driving force control device according to claim 2, wherein

the correction prohibiting unit prohibits the execution of the correction control of the wheel speed by the wheel speed correcting unit at the time a slip ratio of either one of a drive wheel or a driven wheel becomes higher than a slip ratio of the other wheel while travelling on the slope road or at the time only one of either the drive wheel or the driven wheel shows a lock tendency while travelling on the slope road.

7. The braking/driving force control device according to claim 2, wherein

whether or not a travelling path of an own vehicle is a slope road is determined based on a difference between an estimated vehicle body acceleration/deceleration estimated from vehicle body speed information and a detected vehicle body acceleration/deceleration detected by a vehicle body front-back acceleration sensor, or based on an output value of a power source.

8. The braking/driving force control device according to claim 3, wherein

whether or not a travelling path of an own vehicle is a slope road is determined based on a difference between an estimated vehicle body acceleration/deceleration estimated from vehicle body speed information and a detected vehicle body acceleration/deceleration detected by a vehicle body front-back acceleration sensor, or based on an output value of a power source.

9. The braking/driving force control device according to claim 2, wherein

the braking/driving force control unit carries out a control of the braking/driving force at the time of the execution of a vehicle control.

10. The braking/driving force control device according to claim 3, wherein

the braking/driving force control unit carries out a control of the braking/driving force at the time of the execution of a vehicle control.