磁流变限力安全带的设计原理  

Design Principle of Magnetorheological Force Limited Seatbelt

作　　者：赵晓昱[1] 王晓聪[1] 王岩松[1] 汪佳农 

机构地区：[1]上海工程技术大学,上海201620

出　　处：《中国机械工程》2016年第4期503-507,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51175320);上海高校特聘教授(东方学者)项目

摘　　要：为了避免车用安全带在紧急锁止时对人体造成伤害,研究了一种可主动控制安全带约束力的磁流变限力器。介绍了限力器的控制原理和结构;运用磁饱和分析法探索了限力器阻尼力与外控电流的对应关系;根据人体胸部的安全承载能力,确立了限力器的限力极值,通过一算例验证了其可行性。该磁流变限力器与复合敏感式安全带锁止器配合,可实现智能控制且可以反复使用。An active limiter for seatbelt constrain force with MRF was proposed. This MRF force limiter was designed in order to avoid having a harmful effect on human body when seatbelt emergency locking. The control principles and structure for MRF force limiter were proposed. To research corre- sponding relationship between the limited damping force and external control current the magnetic saturation analysis method was adopted. Limiting value of limiter was set up according to chest load- carrying capability,and its feasibility was verified by a numerical example. The MRF force limiter can be used with emergency locking retractor. It can realize intelligent control and reuse.

关 键 词：安全带 磁流变限力器 胸部约束 磁饱和分析 阻尼力方程 

分 类 号：U461.91[机械工程—车辆工程] TH132.22[交通运输工程—载运工具运用工程]