Dielectric elastomer active vibration isolation air spring

Abstract

The invention provides a dielectric elastomer active vibration isolation air spring comprising a dielectric elastomer air bag with an upper end cover and a lower end cover. The inner portion of the dielectric elastomer air bag is hollow and forms an air bag structure. The dielectric elastomer air bag is composed of silicone membrane or rubber membrane, wherein the two sides of the silicone membrane or rubber membrane are coated with flexible electrodes. When voltage is applied to the dielectric elastomer air bag, induced maxwellian stress enables the area of the air bag to be increased and thethickness of the air bag to be reduced, under the action of the internal pressure and the borne load, the dielectric elastomer air bag expands outwards, and different descent displacements can be generated by changing the amplitude of the applied voltage. When the voltage is removed, the air spring rapidly recovers, and the borne load can be jacked to the original position. In this way, active vibration isolation can be achieved through control over voltage application. The dielectric elastomer active vibration isolation air spring is compact in structure, light in mass, silent in operation,convenient to control and rapid in response, the stiffness and damping of the air spring can be controlled through voltage application, and then active vibration isolation is achieved.

Description

technical field [0001] The invention relates to a technology in the field of vibration control, in particular to a dielectric elastic body active vibration isolation air spring. Background technique [0002] Air spring is a non-metallic spring that uses the compressibility of air to achieve elastic action. It has the functions of cushioning, vibration reduction and actuation. It is widely used in some high-frequency vibrations because of its nonlinear characteristics and low natural frequency. Occasions, such as automobiles, railway vehicles and ships, aviation, industry, etc. The basic structure of the air spring is to fill the flexible closed air chamber with compressed air. When the air spring is deformed in vibration isolation, the sum of the reaction force of the internal air compression and the reaction force that increases with the deformation of the effective pressure area is used. Provides elastic recovery. Contents of the invention [0003] Aiming at the defect...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects that the existing air spring is supplied by the air pump and adjusted by the air valve, which makes the equipment bulky and noisy during operation, the present invention proposes an active vibration-isolation air spring made of dielectric elastomer, which can be rapidly Adjust the stiffness and damping of the air spring to achieve the effect of active vibration isolation, and the supporting equipment is small in size, easy to integrate, and quiet in operation

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