Identification method for three human equivalent masses of vehicle seat human vibration model

Abstract

The invention relates to an identification method for three human equivalent masses of a vehicle seat human vibration model, and belongs to the technical field of vehicle seats. The identification method is characterized in that a seat human system simulink model is built according to the seat human vibration model, and the human equivalent masses of the vehicle seat human vibration model are identified by the aid of an identification target function of the three human equivalent mass parameters and optimization algorithm by taking measured vertical vibration acceleration of a seat at the mounting center of a cab floor. By the identification method, three more accurate and reliable human equivalent masses can be identified, so that precision of the vehicle seat human vibration model and analysis is improved, and a reliable foundation for optimal design of seat suspension system parameters and improvement of seat comfort is laid. Besides, a large number of sampling tests can be avoided, test and design costs are reduced, and product development is accelerated.

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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