Vehicle Active Inertia Type Dynamic Vibration Absorbing Suspension

Abstract

The invention discloses a vehicle active inerter type dynamic vibration absorption suspension which comprises a main spring, an active inerter, an auxiliary spring and a damper, wherein an upper fulcrum of the main spring is connected with a body; a lower fulcrum of the main spring is connected with a tire; an upper fulcrum of the active inerter is connected with the body; a lower fulcrum of the active inerter is respectively connected with upper fulcrums of the auxiliary spring and the damper; a lower fulcrum of the auxiliary spring is respectively connected with a lower fulcrum of the damper and the tire. According to the vehicle active inerter type dynamic vibration absorption suspension disclosed by the invention, a pair of body single-degree-of-freedom vibration links is formed by the body and the main spring; a resonance peak is formed near a resonance frequency; meanwhile, a set of active dynamic vibration absorber is formed by the active inerter, the auxiliary spring and the damper; when a vehicle runs, the active type dynamic vibration absorber and the body vibration links generate a tuning effect, so that a vibration amplitude near the resonance frequency is effectively cut down; an active actuator outputs an active actuating force in real time to cut down vibration energy of the tire and expand a vibration reduction frequency domain of the suspension, so that vehicle comfort can be obviously improved.

Description

technical field [0001] The invention relates to a vehicle suspension, in particular to a vehicle active inertial dynamic shock absorbing suspension. Background technique [0002] For vehicle suspension, dynamic shock absorbers can be used to reduce the amplitude gain near the sprung or unsprung resonance frequency, which can significantly improve the body acceleration and tire dynamic load indicators respectively. However, this method requires a large additional mass and is difficult to implement in engineering, thus limiting its application in suspension. The inerter can achieve the dynamic characteristics of a large-mass body with a small mass, making it possible for a lightweight dynamic shock-absorbing suspension. However, as an element at both ends, the inerter introduces the vibration energy from the tire, resulting in a narrow frequency band of the passive inertial dynamic vibration-absorbing suspension, which has limited improvement in ride comfort. Contents of th...

AI Technical Summary

Problems solved by technology

However, as an element at both ends, the inerter introduces the vibration energy from the tire, resulting in a narrow frequency band of the passive inertial dynamic shock-absorbing suspension, which has limited improvement in ride comfort.

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