Method for controlling an electronically adjustable steering damper for a two-wheeled vehicle and apparatus implementing it

Abstract

The present invention refers to a method for controlling an electronically adjustable steering damper in a two-wheeled vehicle or motor vehicle, and to an apparatus implementing it, in which the steering damper is able to exert a damping torque on a steering assembly (45) of the two-wheeled vehicle (40) that can be adjusted according to a steering speed (s'). The control method comprises the steps of calculating an instantaneous damping coefficient ( cin(t) ) of the electronically adjustable steering damper based on the at least one controlled variable (s, s') and is characterized in that the at least one controlled variable comprises a yaw rate (s) of the two-wheeled vehicle. Correspondingly, the control apparatus comprises processing means connected to at least one measuring means being suitable for calculating an instantaneous damping coefficient value ( cin(t)) of the steering damper and is characterized in that at least one measuring means comprises a means for measuring a yaw rate ( s) of the two-wheeled vehicle (40) and / or a means for measuring a steering angle (sdelta).

Description

technical field [0001] The invention relates to a method for controlling an electronically adjustable steering damper in a two-wheeled vehicle or a motor vehicle and a device for implementing the method. Background technique [0002] Research in the field of motorcycles is increasingly aimed at making vehicles that are more powerful and lighter, and thus have a high degree of natural instability that can be partially mitigated by adapting the steering damper to reduce the modes of vibration it is subjected to restricted. [0003] Specifically, at low speeds, there are mainly three modes of vibration in a two-wheeled vehicle: the pitch of the vehicle, the hop of the tires, and the wobble mode. The tilt mode is caused by the rotation of the vehicle about a transversal axis through the center of gravity, which causes one suspension to be compressed and the other to be elongated; this mode of vibration usually occurs at low frequencies because of its dynamics ) is controlled b...

AI Technical Summary

Problems solved by technology

[0018] Wobble and roll vibration modes are both affected by the damping coefficient of the steering damper, but in the opposite way: high damping values ​​dampen high frequency resonances, but amplify low frequency resonances

[0019] Therefore, the high damping factor of the steering damper ensures good damping of the swing resonances, however amplifies the roll resonances

[0020] The contrast between the effect of a particular damping coefficient value with respect to the two vibration modes makes passive steering dampers completely unsuitable for attenuating both simultaneously.

[0021] Furthermore, the known control methods of the steering damper at high speeds essentially only track the oscillations and likewise do not ensure effective damping of the rolling motion.

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