智能预警式汽车安全带控制模式及实验研究
Research on Intelligent Seat Belt-pretensioner Control Model and Experiment
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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。Abstract: 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.
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Key words:
- seat belt /
- intelligent pretentioner /
- control model /
- control parameters /
- vehicl
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