Design And Performance Research Of Automotive Electromagnetic Energy Regenerative Shock Absorber

At present,affected by the global shortage of traditional energy sources and environmental damage,many auto companies in the world have begun investing large sums of money and manpower in the research and development of automotive energysaving technologies.In order to reduce dependence on traditional energy sources and reduce environmental pollution,pure electric vehicles and hybrid vehicles are gradually becoming The mainstream of the future automotive industry.At the same time,the development of new energy vehicles makes the application of energy-feed suspensions more and more promising.The automobile suspension connects the body and wheels,and generally includes shock absorbers,elastic elements and connection devices.The shock absorbers can attenuate the excitation of uneven roads.Conventional hydraulic shock absorbers convert vibrational mechanical energy into heat energy and dissipate it into the air.The energy regenerative shock absorber converts vibrational mechanical energy into hydraulic energy or electric energy and stores it for use in automobile hydraulic energyconsuming components or electrical equipment,improving energy efficiency.Utilization rate.In this paper,a new type of electromagnetic energy-absorbing vibration absorber is designed to study its energy-feeding ability and vibration-damping performance.At First,the structure and working principle of the seven kinds of energy-supply shock absorbers are introduced.The advantages and disadvantages of the seven kinds of energy-supply shock absorbers are analyzed.This paper proposes an electromagnetic energy-absorbing shock absorber based on ball screws.The structure and working process of the new type of energy-supply shock absorber were introduced in detail,and the model selection and verification of the core components were completed.And Then,in the advanced modeling and simulation software AMESim,a simulation model of the electromagnetic energy-feeding shock absorber is established to set the correct parameter values for the ball screw mechanism and the generator,and the energy-supplying ability of the model under random excitation is ensured to ensure the reliability of the model.With the correctness and correctness,the shock absorber has a good power feeding capability and can perform a co-simulation with the Adams vehicle.Secondly,taking a domestic electric vehicle as the research object,a ride comfort test under random input driving conditions was performed,a three-dimensional model of the vehicle was established using UG,and the model was modified in ADAMS,and then the vehicle model was powered.Learning simulation,comparing the acceleration response of two kinds of vehicle bodies,by modifying the model parameters to keep the simulation results and test results basically the same,ensuring the accuracy of the model,laying the foundation for the next chapter of the joint simulation.Finally,the joint simulation interface of AMESim and ADAMS was established to realize the co-simulation of the feed energy absorber and the vehicle simulation model.The energy recovery capability of the shock absorber under different speeds was studied when the vehicle speed was low.The output current of the energy-feeding damper is low.As the vehicle speed increases,the higher the output current of the shock absorber,the more obvious the energy recovery effect.Comparing the acceleration response of the body of the energy-absorbing absorber and the conventional absorber at different vehicle speeds,the vibration-reducing performance of the energy-absorbing absorber is weaker than that of the traditional absorber,but the acceleration of the body loaded with the energy-absorbing absorber The limit value is still controlled within the range of 0.2 ～ 0.3g,to meet the requirements of the car’s ride comfort.