Modeling And Simulation Analysis Of The Vehicle’s Cross-reverse Connection Energy-feeding Suspension

In recent years,although the traffic safety situation in my country has improved,the fatality rate of vehicle rollover accidents is still high.Therefore,improving the anti-roll performance of vehicles is important for reducing the number of deaths in traffic accidents and protecting people’s property and personal safety way.Compared with the traditional vehicle suspension arrangement structure,the interconnected suspension can provide better vehicle anti-roll performance while maintaining the smooth running of the vehicle,which has very important application value.Therefore,on the basis of the traditional suspension system,this thesis proposes a new type of cross-reverse connection energy-feeding suspension based on the suspension interconnection characteristics and energy-feeding effect,which aims to improve the ride comfort and roll stability of the vehicle.To recover the vibration energy of the suspension,the specific research contents are as follows:First of all,based on the characteristics of the different interconnection modes of the suspension,the front and rear axle suspensions of the vehicle are reversely connected through the oil pipes,the left and right axle suspensions are reversely connected through the oil pipes,and the energy feeding electromagnetic unit is introduced into the interconnection suspension.This paper proposes a cross-reverse continuous energy-feeding suspension structure that integrates a hydraulic-electric energy-feeding suspension system and an interconnected suspension system.The structure and principle of the suspension system are analyzed in detail.Secondly,use AMESim software to establish the hydraulic system model and the energy feedback system model of the cross-reverse connection energy-feeding suspension.At the same time,a vehicle model equipped with a cross-reverse connection energy-feeding suspension is established,which mainly includes a chassis model,a powertrain model,a steering system model,a braking system model,and a suspension system model.Then,in the AMESim vehicle model,through the simulation of the suspension performance evaluation index under different constant current values of the energy-feeding electromagnetic unit,the optimal current value of the energy-feeding electromagnetic unit in the cross-reverse connection energy-feeding suspension is determined.Under the excitation of different levels of road surfaces,the cross-reverse connection energy-feeding suspension,the cross-reverse-connected suspension without energy-feedback and the traditional suspension are simulated and compared and analyzed.Finally,the system parameters related to the spring force and the damping force are selected for DOE analysis,and the suspension structure parameters that have a greater impact on the dynamic performance of the suspension are extracted.Taking the comfort,stability and energy feedback characteristics of the vehicle as the optimization goals,the extracted parameters are optimized based on the genetic algorithm based on the research management function of AMESim,and finally the optimized suspension parameters are applied to the suspension performance simulation.The research results of the thesis show that after reasonable optimization,the cross-reverse connection energy-feeding suspension proposed in this thesis is superior to the traditional suspension system and the cross-reverse-connected suspension without energy feedback in terms of comfort and stability.The improvement effect is significantly increased.