Birotor self-powered damper based on magnetorheological elastomers

Abstract

The invention relates to a birotor self-powered damper based on magnetorheological elastomers. The birotor self-powered damper based on the magnetorheological elastomers comprises a power generating module, an energy module and a damping module which are integrated, the power generating module and the damping module are fixedly connected with a vehicle body, the power generating module is a birotor power generating device with a ball screw assembly as a driving part, the ball screw assembly drives dual rotors to rotate to generate power by means of up-and-down movement of the damping module when vehicle wheels meet road excitation, the electric energy is transmitted to the energy module to be stored, the energy module is provided with a battery and a controller, the battery is connected with the power generating module, the controller is connected with a vehicle control terminal, the damping module is a magnetofluid elastic device which comprises a piston and a piston rod, the piston rod is connected with the ball screw assembly, magnetofluid elastic components are arranged above and below the piston respectively, the magnetofluid elastic components are connected with the battery, and the battery is controlled by the controller to provide power for assigned magnetofluid elastic elements.

Description

Technical field: [0001] The invention relates to a dual-rotor self-powered shock absorber based on a magneto-rheological elastomer. Background technique: [0002] The shock absorber (Vibration Damper) is mainly used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. Shock absorber is too soft, automobile body can hop up and down, shock absorber can bring too great resistance too forcedly, cloggy bedspring works normally. [0003] For a general shock absorber, its damping is fixed, which also determines that the designer can only choose one between comfort and sportiness, or choose a soft and hard shock absorber that is a compromise. To make a model both comfortable and sporty, the shock absorbers must...

AI Technical Summary

Problems solved by technology

Disadvantages: First, the adjustment range is limited (the main body of the shock absorber is still a spring), the neutrality is not good, there is a gap between the piston and the barrel wall, and it is easy to shift when subjected to lateral force and

Second, when the use environment is complex, the connection between the power supply and the damper, the reliability of the power supply, and the sealing will all become weak points

Third, the ferromagnetic medium in the magnetorheological fluid is prone to precipitation, which affects its shock absorption performance

There are many disadvantages in this solution: First, due to the large size of the solution, it is difficult to integrate it into the magneto-rheological damper; second, its energy conversion efficiency is very low, and it is difficult to ensure sufficient power for the magnetorheological damper to work; third, the The proposal does not address the storage and management of energy

Although its space requirements are not particularly high, it also has many disadvantages: First, because the magnetorheological fluid is relatively thick and friction occurs between the blades, the energy is mostly dissipated in the form of heat energy, which may cause the magnetorheological fluid to heat up, resulting in Ineffective; second, the speed of the blade is relatively slow, and the electric energy generated by it can only supply power to the sensor, and the power generation efficiency cannot be guaranteed; third, the butterfly magnetoelectric transducer is immersed in the magnetorheological fluid, and the sealing requirements are high. Once leakage occurs, may cause damage to the entire generator

Images