摘要
分析了普通预警式安全带的机械结构组成和预警工作过程,针对其自身存在的不足,提出了智能预警式安全带控制系统,构建了距离预警子系统、车辆横向稳定预警子系统、车辆纵向稳定预警子系统以及碰撞预警子系统,同时确定了系统控制参数。结合智能预警安全带控制软件,设定了与前车相对时间距离、车辆横摆角速度、方向盘转角、车辆减速度4种车辆不稳定输入信号进行实验,结果表明:智能预警式安全带收紧量有效控制在0～10 cm范围内,预警力控制在0～20 N范围内,最大反应时间为19 ms,起到了预警与收紧作用,能有效地对驾乘人员提供防护。
The mechanical structure composition of general seat belt-pretensioner and its pretension process were analyzed.In connection with its own shortcomings,the control system of intelligent seat belt-pretensioner was proposed.Early warning subsystems of distance,vehicle crosswind stability,vehicle longitudinal stability and crash were built,and the system control parameters were also set.With the control software of intelligent seat belt-pretensioner,four input signals of vehicle instability were set for experiment,including relative time distance from ahead-vehicle,vehicle yaw rate,steering wheel angle and vehicle deceleration.The test results show that intelligent seat belt′s pretention length can be controlled within 0～10 cm;pretention force can be controlled within 0～20 N,and the maximum reaction time is 19 ms.The intelligent seat belt-pretensioner plays an important role in early warning and tightening,in order to effectively protect the drivers and passengers.
出处
《机械科学与技术》
CSCD
北大核心
2012年第12期1988-1992,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
天津市高等学校科技基金项目(20110405)
天津职业技术师范大学科研发展基金项目(KJS0907)资助
关键词
安全带
智能预警
控制模式
实验研究
控制参数
seat belt
intelligent pretentioner
control model
control parameters
vehicl
safety design
seat belt-pretensioner
