Vehicle suspension structure with inerter-spring-damper

Abstract

The invention discloses a vehicle suspension structure with an inerter-spring-damper. Based on a new electromechanical analogy theory, an inerter-spring-damper device corresponding to a capacitor in mechanical elements and circuit elements is applied to a vehicle suspension vibration isolation system. Aiming to solve the problem of overload failures due to the fact that passive mechanism elements bear the weight of a vehicle body, the vehicle suspension structure is provided with a parallel-connected spring as the structural basis and is characterized in that the inerter-spring-damper is connected with a damper in series and then is connected with a spring element in parallel. The vehicle suspension structure with the inerter-spring-damper is simple in structure, it is achieved that the effect of 'virtual inertia' of increasing spring load mass is improved without increasing the weight of the vehicle body, and the riding comfort and the handling stability of a vehicle can be improved. Through simulation analyses, the riding comfort evaluation indexes, namely, the vehicle body accelerated speed root-mean-square value, the suspension moving travel root-mean-square value and the tire moving load root-mean-square value, of the vehicle suspension with the structure are all reduced to a certain extent, and the vehicle suspension structure with the inerter-spring-damper has certain application value.

Description

technical field [0001] The invention relates to a vehicle suspension structure, in particular to a vehicle suspension structure containing an inerter. Background technique [0002] 1. Electromechanical simulation theory [0003] The study found that the mechanical system and the corresponding circuit system have the same form in the mathematical model (ie, the differential equation or transfer function describing their dynamic characteristics) under the condition of simple harmonic excitation, so that the corresponding simulation relationship can be established. [0004] Two types of electromechanical simulation theories have been proposed in history. The first type is based on the similarity of "force-voltage" and "speed-current". It is found that the mass, damping, spring and inductance and resistance of mechanical components are , corresponding to the capacitance. The second category is based on the similarity of "force-current" and "speed-voltage". It is believed that ...

AI Technical Summary

Problems solved by technology

However, it connects the inerter device in parallel with the spring and damper in the traditional passive suspension, which increases the lateral space of the suspension layout, and the centers of the three components are not on the same axis, so the engineering application value is still to be discussed

Images