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基于可变窗宽移动窗积分的汽车气囊点火算法研究

发表时间:2017-07-31  浏览量:145  下载量:10
全部作者: 曹立波,周天元,吴梦华
作者单位: 湖南大学汽车车身先进设计制造国家重点实验室
摘 要: 汽车安全气囊目标点火时刻(time to fire,TTF)的选取对乘员的保护效果起到了关键性作用,一直是安全气囊控制系统研究的重点。对点火条件进行分析;利用整车有限元模型与MADYMO约束系统模型仿真对安全气囊目标点火时刻最佳窗宽、窗高的选取与碰撞强度相关性进行研究;以加速度变化率为指标初步识别碰撞强度,提出一种可变窗宽移动窗积分算法,分析窗宽、窗高的选取对目标点火时刻的影响。实验数据表明,可变窗宽移动窗积分算法能有效识别碰撞强度,使目标点火时刻接近最佳点火时刻(required time to fire,RTTF),达到安全气囊最大限度保护乘员的目的。
关 键 词: 车辆工程;移动窗积分;可变窗宽;安全气囊;加速度变化率;碰撞强度
Title: Research on automobile airbag ignition algorithm based on moving window integral with variable width
Author: CAO Libo, ZHOU Tianyuan, WU Menghua
Organization: State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University
Abstract: The selection of time to fire (TTF) on automobile airbag systems plays a key role in the protection of drivers and their passengers, which always has been the focus of the research on the airbag control system. The analysis of ignition conditions is carried out in this paper. Study on the correlation between the optimal window width, depth and impact strength is made by using the finite element model and the simulation of the MADYMO model. Based on regarding the acceleration rate as the initial identification of impact strength, a moving window integral algorithm with variable width is proposed to analyze the influence of the window width and depth on TTF. The experimental results show that the algorithm proposed can effectively identify the impact strength, and make the airbag deployed at or near the required time to fire (RTTF), and achieve the maximum protection to passengers by airbag.
Key words: vehicle engineering; moving window integral; variable window width; airbag; acceleration rate; impact strength
发表期数: 2017年7月第14期
引用格式: 曹立波,周天元,吴梦华. 基于可变窗宽移动窗积分的汽车气囊点火算法研究[J]. 中国科技论文在线精品论文,2017,10(14):1602-1609.
 
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