Vibration-damping control device for vehicle

Abstract

There is provided a vibration damping control device which suppresses pitching and bouncing vibration of a vehicle through a drive output control based on a wheel torque estimated value estimated with a wheel speed, etc., which device uses the estimated value of a wheel torque while taking into account conditions where no good estimation of the wheel torque is executable. The vibration damping control device comprises a wheel torque estimated value acquisition portion which acquires a wheel torque estimated value; and a driving torque control portion which controls a driving torque of the vehicle to suppress pitching or bouncing vibrational amplitudes based on the wheel torque estimated value, wherein the absolute value or the sign of the wheel torque estimated value is corrected in accordance with the degree of a slip of the wheel or the direction of movement of the vehicle. Further, there is provided a torque estimating device suitable for a vibration damping control and other running, motional or braking-driving force controls for a vehicle, etc.

Description

technical field [0001] The present invention relates to a vibration damping control device for a vehicle, more particularly, to a vibration damping control device that controls the drive output (drive force or drive torque) of a vehicle to suppress vibration of a vehicle body, and to a vibration damping control device that can be advantageously used for the vehicle A device for estimating wheel torque during running of a vehicle. Background technique [0002] During the running of the vehicle, the braking and driving force (or inertial force) acting on the vehicle body to cause pitch-jump at the time of acceleration and deceleration of the vehicle is reflected in the In the torque between road surfaces (referred to as "wheel torque" in this specification). Therefore, in the field of vibration damping control of vehicles, it is proposed to adjust the wheel torque by controlling the drive output of the engine or other driving devices of the vehicle to suppress the vibration o...

AI Technical Summary

Problems solved by technology

However, in general, sensors capable of directly detecting wheel torque during vehicle running are not mounted on conventional vehicles, except for vehicles for detection (see JP 2005-69897), due to problems in vehicle design or cost (For example, wheel torque sensors, wheel six-force components, etc.)

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