Study On Performance Optimization Of Vehicle Energy Regenerative Suspension Based On Inerter

As people living standard rise,vehicle ownership increase rapidly,at the same time,energy consumption of the car is becoming more and more it is worth noting that studies have shown that the proportion of the energy used to drive the vehicle consumption is not high,most of the energy in the process of vehicle by vibration dissipation,vehicles can supply suspension can absorb part of the energy dissipation,This paper mainly studies the passive network structure based on inertial capacity on the impact of energy regenerative suspension performance and vehicle energy regenerative suspension performance optimization,the main contents include:The dynamic model of a quarter vehicle model with inertial capacity was modeled,and the equivalent analysis of the energy regenerative shock absorber was carried out,which was equivalent to the parallel form of inertial capacity and damper.The traditional performance indexes of the vehicle were introduced,including ride comfort,suspension travel and tire dynamic load.Six kinds of fixed passive network structures were used to replace the static stiffness spring in the traditional energy-regenerative suspension to analyze the optimal performance and parameters.By using the network synthesis method,the optimal network structure and specific admittance for energy-regenerative suspension are given under the constraints of first-order and second-order network structures.Energy regenerative suspension is different from the traditional suspension in that it can absorb vibration energy,so the index of average power recovery related to energy recovery is unique,and the average power recovery index is defined,and the single objective optimization of the given structure method is carried out.The analytical calculation method of performance index is briefly introduced,and four structures of average recovered power index are analyzed.The paper briefly introduces the pavement classification and the pavement description model,which makes the white noise signal generate the pavement input signal through the firstorder filter,converts the dynamics model into the state space model,and builds the simulation model by using Simulink.The traditional energy regenerative suspension with static stiffness spring,the energy regenerative suspension with spring damping structure and the energy regenerative suspension with spring damping inertial capacity structure are selected for simulation comparison,and the conclusion is drawn that the passive network structure with inertial capacity can effectively improve the performance of vehicle suspension.The active suspension experimental platform is used for experimental verification,the overall components of the platform are introduced,and the active suspension part is emphatically introduced,including the main functions and main parameters of its different components.The active suspension motor is used to simulate road input and different passive network structures.The platform dynamics and state space model were established,and the experimental model was established.By analyzing the experimental results,the effectiveness of passive network structure with inertial capacity to improve the traditional performance of vehicles is verified.