Identification method of human body equivalent three-mass of vehicle seat human body vibration model

Abstract

The invention relates to an identification method of human body equivalent three-mass of a human body vibration model of a vehicle seat, belonging to the technical field of vehicle seats. The invention is characterized in that: according to the human body vibration model of the seat, the simulink simulation model of the human body system of the seat is established, and the vertical vibration acceleration of the measured seat at the installation center of the cab floor is input as input, and the equivalent three-mass of the human body is used Identify the objective function of the parameters and use the optimization algorithm to identify the equivalent three masses of the human body in the human body vibration model of the vehicle seat. Using this identification method, more accurate and reliable three equivalent masses of the human body can be identified, thereby improving the accuracy of the human body vibration model and analysis of the vehicle seat, and laying a reliable foundation for the optimal design of the seat suspension system parameters and the improvement of seat comfort. foundation; at the same time, the present invention can avoid a large number of sample tests, reduce test and design costs, and speed up product development.

Description

technical field [0001] The invention relates to a vehicle seat, in particular to a method for identifying human equivalent three-mass of a human body vibration model of the vehicle seat. Background technique [0002] 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 car seat system, it is necessary to establish the human body vibration model of the vehicle seat, so as to analyze and optimize the design of the seat system. The accuracy of the human equivalent mass of 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 improvement. At present, in the study of the comfort of the car seat system in my country, there are mainly two methods to deal with the equivalent mass of the human body vibration model: one ...

AI Technical Summary

Problems solved by technology

At present, in the study of the comfort of the car seat system in my country, there are mainly two methods to deal with the equivalent mass of the human body vibration model: one is to directly equivalent the human body to a mass block, and then establish a corresponding vehicle vibration model for research, This result is not accurate enough; the other is to use the human body quality parameters provided by the international standards on human body vibration, but they are all based on European and American populations. Because of the difference in human bone structure, the data in the standards cannot be directly used in the study of seat comfort in my country.

In addition, the human body-seat system is an inseparable overall system. The equivalent mass of the human body obtained by many scholars through a large number of human experiments cannot be directly used in the research of the seat system. This method is expensive and takes a long time.

Therefore, at present, there is no fast and accurate method to obtain the equivalent mass of the human body applicable to the human body vibration model of the vehicle seat in my country, and it is necessary to establish an identification method for the human body equivalent three masses of the human body vibration model of the vehicle seat

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