An active suspension using an air spring assembly

Abstract

The invention discloses an active suspension adopting an air spring assembly in the technical field of vehicle suspension. The assembly has two air springs with the same structure and arranged symmetrically up and down. Between the two air springs is a rigid inner tube arranged front and rear. The central axis of the rigid inner tube intersects the central axis of the active force actuator perpendicularly. The front and rear ends are fixedly connected to the upper end of the inner pipe mounting seat, the lower end of the inner pipe mounting seat is rigidly connected to the lower wishbone, the lower wishbone is connected between the vehicle body and the wheel, and a damping pipe is sealed and connected between the two airbags; the present invention The air spring assembly used not only has the function of coupling, but also has the function of damping. In addition to the first-level damping function formed by the active force actuator and the coil spring, the suspension also has the second-level function formed by the air spring assembly. Vibration reduction function.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension, and in particular relates to a vehicle active suspension adopting a rotating electrical machine type active force actuator. Background technique [0002] Suspension is the general term for the force transmission connection device between the frame (or load-bearing body) and the axle (or wheel) of the vehicle. Its function is to transmit the force and moment acting between the wheel and the frame, and the buffer The impact force transmitted to the frame or body by the uneven road surface, and attenuates the vibration caused by it, so as to ensure the smooth running of the car. [0003] The active force actuator is a key component of the vehicle's active suspension. The active force actuator has the ability to provide active control force to the suspension and has the potential to make the car obtain a good ride comfort. At present, active power actuators include hydrostatic type, pneum...

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problem that the ideal control force of the suspension is amplified due to the large equivalent inertial mass of the existing suspension adopting the rotating motor type active force actuator, and proposes a suspension adopting an air spring assembly. Active suspension, the active force actuator is concentrically fixed and connected in series with an air spring assembly with vibration damping function, which effectively eliminates the influence of equivalent inertial mass on ideal control force

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