US 6,984,003 B2 · Cornering power control device and method

Abstract

To provide a new vehicle control technique, a calculation section calculates a cornering power ka using the detected longitudinal force Fx, lateral force Fy, and vertical force Fz, and the identified friction coefficient μ. This calculation is made based on the correlation between a slip angle β of the wheels and the lateral force Fy. Based on thus calculated cornering power ka and a target cornering power ka′ required for the wheels, a processing section determines a change amount for changing at least one action force out of the longitudinal force Fx, the lateral force Fy, and the vertical force Fz, all acting on the wheels. Based on thus determined change amount, a control section controls at least one action force out of the longitudinal force Fx, the lateral force Fy, and the vertical force Fz, all acting on the wheels.

Claims20

Dependent claims

A cornering power control device for controlling a cornering power of a wheel, comprising:

a detection section for detecting a longitudinal force, a lateral force, and a vertical force each as an action force exerted on said wheel;
an identification section for identifying a friction coefficient between said wheel and a road surface;
a calculation section for calculating said cornering power of said wheel based on a correlation between a slip angle and said lateral force for said wheel, by using said detected longitudinal force, said detected lateral force, said detected vertical force, and said identified friction coefficient;
a processing section for determining a change amount for changing at least one of said action forces including said longitudinal force, said lateral force, and said vertical force each acting on said wheel, based on said calculated cornering power and a target cornering power required for said wheel;
and
a control section for controlling at least one of said action forces including said longitudinal force, said lateral force, and said vertical force all each acting on said wheel, based on said change amount determined by said processing section.

3 more elements

A cornering power control method for controlling a cornering power of a wheel, comprising:

detecting a longitudinal force, a lateral force, and a vertical force each as an action force exerted on said wheel;
identifying a friction coefficient between said wheel and a road surface;
calculating said cornering power based on a correlation between a slip angle and said lateral force of said wheel, by using said detected longitudinal force, said detected lateral force, said detected vertical force, and said identified friction coefficient;
determining a change amount for changing at least one of said action forces including said longitudinal force, said lateral force, and said vertical force each acting on the wheels, based on said calculated cornering power and a target cornering power required for said wheel;
and
controlling at least one of said action forces including said longitudinal force, said lateral force, and said vertical force each acting on said wheel, based on said determined change amount.

3 more elements

Dependencies are inferred from the claim text.

Cornering power control device and method

Life of this patent

Cornering power control device and method

Life of this patent

Abstract

Claims20