Design And Research Of Hydraulic Vibration Energy Recovery System Of Speed Bump

This paper firstly compares the advantages and disadvantages of different speed bump vibration energy harvesting devices(piezoelectric,mechanical,electromagnetic,hydraulic),and selects hydraulic form as the basic structure form of speed bump vibration energy recovery system.According to the range of vehicle speed passing through the speed bump,a design scheme of hydraulic vibration energy recovery system of speed bump is proposed,which is integrated by collection and distribution power generation mode(speed in the range of 10 ~ 20km/h)and continuous power generation mode(speed in the range of 20 ~ 30km/h).Based on the vehicle–speed bump model,the acceleration of vehicle body and wheel under the excitation of the speed bump is calculated,and then the influence of the width and height of speed bump on the dynamic performance of vehicle is studied.According to this,the geometric size of speed bump suitable for hydraulic vibration energy recovery device is determined.The dynamic modeling problem of hydraulic speed bump vibration recovery system is studied.Vehicle–speed bump–hydraulic transducer coupling vibration model is established by an equivalent mass and damping system and then the coupling vibration characteristics are analyzed.Mathematical model of continuous power generation module is established by transfer function method and mathematical model of collection and distribution power generation module is established based on power bond graph.According to the coupling characteristics of vehicle–speed bump–hydraulic transducer at higher speed,co–simulation based on Matlab/Simulink and AMESim is established to study the continuous power generation module of speed bump.According to the coupling characteristics of vehicle–speed bump–hydraulic transducer at lower speed,co–simulation based on ADAMS and AMESim is established to study the collection and distribution power generation module of speed bump.According to simulation result,this paper performs parameter matching and determines operating parameters and components model to maximize the vibration energy recovery of speed bump.Based on three–dimensional virtual design,the integrated assembly structure and space layout on the road of energy recovery device are designed.Then design and build the test bench for the sample machine.Finally,make bench test using the prototype.Through the bench test,the problem of hydraulic system oil pipe is analyzed and then optimize the structure.the power generation capacity is tested in the optimized platform.