Obtaining method of car seat suspension hydraulic buffer nonlinear speed characteristic parameter

Abstract

The invention relates to an obtaining method of a car seat suspension hydraulic buffer nonlinear speed characteristic parameter and belongs to the technical field of car seats. The method is characterized in that according to an established seat human body system vibration simulation model, the vibration acceleration obtained by a test of a seat at a cab floor mounting center position and the vibration acceleration of a seat face, by using a target function obtained though the car seat suspension hydraulic buffer nonlinear speed characteristic parameter and an optimization algorithm, the car seat suspension hydraulic buffer nonlinear speed characteristic parameter is obtained. According to the method, the accurate and reliable seat suspension hydraulic buffer nonlinear speed characteristic parameter can be obtained, the accuracy of car seat human body vibration modeling and analyzing is improved, a reliable technological base is provided for seat suspension system parameter optimization designing, meanwhile, a large amount of money for buffer test table purchasing can be saved, and the shortcomings that buffer test cost is high, and a characteristic parameter obtaining cycle is long are overcome.

Description

technical field [0001] The invention relates to a vehicle seat, in particular to a method for obtaining nonlinear velocity characteristic parameters of a vehicle seat suspension hydraulic shock absorber. Background technique [0002] Hydraulic shock absorbers have ideal nonlinear velocity characteristics and are widely used in seat suspension systems. The comfort of the seat system is one of the important indicators to evaluate the performance of the car. In order to improve the comfort of the vehicle seat system, the human body vibration model of the vehicle seat must be established, so as to analyze and optimize the design of the seat system. The accuracy of the nonlinear velocity characteristic curve of the seat mount hydraulic shock absorber in the human body vibration model of the vehicle seat directly determines the accuracy of the human body vibration model of the vehicle seat, thereby determining the optimal design result of the seat system and the degree of comfort...

AI Technical Summary

Problems solved by technology

At present, for the nonlinear velocity characteristic curve of the hydraulic shock absorber, our country mainly measures it through the shock absorber bench test, but this method requires a special shock absorber test bench. For automobile manufacturers, the purchase of shock absorber The cost of the test bench is high; if a manufacturer with a shock absorber test bench is entrusted to do the test, the test cost is high and the acquisition period is long

Therefore, at present, in the study of the comfort of the vehicle seat system, there is no low-cost, fast and accurate method to obtain the non-linear velocity characteristic curve of the seat mount hydraulic shock absorber, and the vehicle seat must also be established. Acquisition Method of Nonlinear Velocity Characteristic Parameters of Mounted Hydraulic Shock Absorber

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