Development of Seat Belt Tension Control Equipment considering Relative Velocity between Lung and Rib

考虑肺与肋骨相对速度的安全带张力控制装置的研制

• 批准号: 15560209
• 负责人: KAWASHIMA Takeshi
• 金额: $ 2.11万
• 依托单位: Kanagawa Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560209/
• 关键词: Safety Engineering; Automobile; Seat Belt; Active Control; Nonlinear Control; Shock Control; Thorax deformation; Deformation Control; 胸部

In a car crash, if deformation of occupant lung or relative displacement between brain and skull is held to the allowable value, no aftereffect will remain. In order to realize this condition, it is necessary to develop an active shock control system which adjusts the seat belt tension or the helmet rigidity instantaneously by the feedback control. Therefore, a semi-active shock control system requiring no powerful actuator was proposed for the feasibility. The control system was derived based on the sliding mode control, and tension control equipment was developed using a friction device which expects the fast response. And, the experimental apparatus was set up. Then, two blocks connected with springs were fallen from the oblique upper part along the linear guide and made to collide with the plastic case, and the relative displacement was almost kept the constant target by changing the tension of fishing line put on the front block. As the result, the effectiveness of the semi-active shock control system was confirmed.The active seat belt system was developed on the basis of this result, and the numerical simulation was carried out using parameters for general adult and typical passenger car. The deformation of occupant lung was decreased naturally and kept to the allowable value along the step response as the target. As the result, the effectiveness of the active seat belt was confirmed.In addition, an active seat belt model of the about 1/10 scales using the linear motor was built, and the tension control equipment was improved in order to follow the control sampling period of about 1ms and generate the tension of almost zero. The relative displacement was decreased following to the target and kept within 20% of the target. As the result, it was shown the feasibility of the active seat belt.

在车祸中，如果将乘员肺的变形或大脑和头骨之间的相对位移保持在允许的值中，则不会保留后效应。为了实现这种状况，有必要开发一个主动冲击控制系统，该系统可以通过反馈控制即时调节安全带张力或头盔刚度。因此，一个半活动的冲击控制系统，不需要强大的执行器才能为可行性提出强大的执行器。控制系统是根据滑动模式控制得出的，并使用摩擦设备期望快速响应开发张力控制设备。并且，建立了实验设备。然后，将两个与弹簧连接的块从线性指南沿斜的上部掉落，并与塑料盒发生碰撞，并且通过改变将钓鱼线的张力改变前块上的捕捞线的张力几乎保持了恒定的目标。结果，确认了半活性冲击控制系统的有效性。主动安全带系统是根据该结果开发的，并使用一般成人和典型乘客汽车的参数进行了数值模拟。自然减少乘员肺的变形，并将沿步长响应作为目标响应保持允许的值。结果，确认了活跃的安全带的有效性。此外，使用线性电动机建立了大约1/10尺度的活动安全带模型，并改善了张力控制设备，以遵循大约1ms的控制采样周期并产生几乎零的张力。在目标之后，相对位移减少，并保持在目标的20％以内。结果，它显示了活动安全带的可行性。

项目成果

セミアクティブ衝撃制御に関する研究(必要最小限度の衝撃力の伝達)

半主动冲击控制研究（传递最小必要冲击力）

• 发表时间: 2005
• 期刊: 日本機械学会論文集 C編 71巻・705号
• 作者: 川島豪

Research on Semi-Active Shock Control (Transmission of Necessity Minimum Impulsive Force)

半主动冲击控制（传递必要最小冲击力）研究

• 发表时间: 2005
• 期刊: Transactions of the Japan Society of Mechanical Engineers Vol.71,No.705,Ser. C
• 作者: 川島豪;Takeshi KAWASHIMA
• 通讯作者: Takeshi KAWASHIMA