Analysis on characteristic parameters of tractor's scissor seat suspension system and study on optimal combination
The analysis on the characteristic parameters and optimal combination of the tractor's scissor seat suspension sys-tem is important to explore and improve the seat's vibration-attenuation performance.In this article,efforts are made to combine the design sampling in the simulation test and the variance analysis on the related data,in order to screen the optimal combination of characteristic parameters for vibration attenuation.The differential equation of the seat suspension's motion is derived through the mechanical analysis,and the simplified model of driver-seat suspension with the single degree of freedom is set up.Both the seat's spring stiffness and the damper's range of damping are calculated theoretically.The influence of the main performance and characteristic parameters of the tractor's scissor seat suspension system on the seat's vibration-attenuation performance is ex-plored.The spring stiffness and the damper's damping are selected as the controlling variables;the acceleration and displacement of the seat suspension's upper plane are taken as the optimization objectives.The optimized Latin hypercube method is used to sample the experimental design.The samples are simulated in Adams;the variance analysis is conducted on the simulated data with the SPSS software,and then the optimal combination of characteristic parameters is identified.The results show that after op-timization the response indexes of the upper plane's acceleration and displacement on the seat suspension's vibration performance increase by 30.43％and 2.31％respectively.This study improves the vibration-attenuation performance of the tractor's scissor seat and provides reference for optimization design of the seat suspension system.
scissor seatsuspension systemvibration performancecharacteristic parameteranalysis and optimization
NETL
NSTL
万方数据
