Method for designing optimal damping coefficient of transverse damper of truck front-wheel shimmying system

Abstract

The invention relates to a method for designing the optimal damping coefficient of a transverse damper of a truck front-wheel shimmying system, and belongs to the technical field of truck front-wheel shimmying systems. The method includes the steps that the minimum critical damping coefficient of the transverse damper is calculated through the Hurwitz stability criterion; the maximum critical damping coefficient of the transverse damper is calculated according to the relationship among tire in-situ steering resistance, damping force of the transverse damper and force of a hydraulic power steering gear; then the optimal damping coefficient of the transverse damper is designed through the golden section principle. Through a design example and Matlab / Simulink simulation verification, it can be known that an accurate and reliable optimal damping coefficient design value of a transverse damper can be obtained, and a reliable design method is provided for designing the optimal damping coefficient of the transverse damper of the truck front-wheel shimmying system. By means of the method, the design level of the truck transverse damper and truck driving safety can be improved, design cost and experiment cost can be further reduced, and the product development period can be shortened.

Description

technical field [0001] The invention relates to a truck front wheel shimmy system, in particular to a method for designing the optimum damping coefficient of a lateral shock absorber of the truck front wheel shimmy system. Background technique [0002] The lateral shock absorber can effectively suppress the shimmy movement of the front wheels when the truck is running at high speed, and significantly improve the ride comfort, safety and handling stability of the vehicle. However, since the front wheel shimmy system of trucks is a multi-degree-of-freedom vibration system, the dynamic analysis and calculation of it is very complicated. According to the information obtained, the current domestic and foreign research on the damping coefficient of the lateral shock absorber of the front wheel shimmy system of trucks Design, has not been able to give a reliable analytical design method, most of them are designed by experiment, Matlab / Simulink modeling simulation or Adams multi-bod...

AI Technical Summary

Problems solved by technology

However, since the front wheel shimmy system of trucks is a multi-degree-of-freedom vibration system, the dynamic analysis and calculation of it is very complicated. According to the information obtained, the current domestic and foreign research on the damping coefficient of the lateral shock absorber of the front wheel shimmy system of trucks Design, has not been able to give a reliable analytical design method, most of them are designed by experiment, Matlab / Simulink modeling simulation or Adams multi-body dynamics software modeling and simulation method, although this method can get relatively reliable simulation value, so that the vehicle has better dynamic performance. However, since this method requires computer modeling, optimization design and calculation, it is difficult for shock absorber engineering designers to master. In addition, this method cannot provide accurate analytical calculation formulas. Analytical design cannot be realized, and it cannot meet the requirements of CAD software development for the lateral shock absorber of the truck front wheel shimmy system

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