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Measurement of Vehicle-Bridge-Interaction force using dynamic tire pressure monitoring

机译：使用动态胎压监测来测量车桥相互作用力

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摘要

The Vehicle-Bridge-Interaction (VBI) force, i.e., the normal contact force of a tire, is a key component in the VBI mechanism. The VBI force measurement can facilitate experimental studies of the VBI as well as input-output bridge structural identification. This paper introduces an innovative method for calculating the interaction force by using dynamic tire pressure monitoring. The core idea of the proposed method combines the ideal gas law and a basic force model to build a relationship between the tire pressure and the VBI force. Then, unknown model parameters are identified by the Extended Kalman Filter using calibration data. A signal filter based on the wavelet analysis is applied to preprocess the effect that the tire rotation has on the pressure data. Two laboratory tests were conducted to check the proposed method's validity. The effects of different road irregularities, loads and forward velocities were studied. Under the current experiment setting, the proposed method was robust to different road irregularities, and the increase in load and velocity benefited the performance of the proposed method. A high-speed test further supported the use of this method in rapid bridge tests. Limitations of the derived theories and experiment were also discussed.
机译：车桥相互作用（VBI）力，即轮胎的法向接触力，是VBI机构中的关键组件。 VBI力的测量可以促进VBI的实验研究以及输入输出桥的结构识别。本文介绍了一种通过动态轮胎压力监测计算相互作用力的创新方法。该方法的核心思想是将理想气体定律和基本力模型相结合，以建立轮胎压力与VBI力之间的关系。然后，扩展的卡尔曼滤波器使用校准数据识别未知的模型参数。应用基于小波分析的信号滤波器来预处理轮胎旋转对压力数据的影响。进行了两次实验室测试，以验证所提出方法的有效性。研究了不同道路不平整度，载荷和前进速度的影响。在目前的实验环境下，该方法对不同路面不平度均具有较强的鲁棒性，而载荷和速度的增加有利于该方法的性能。高速测试进一步支持了此方法在快速桥梁测试中的使用。还讨论了衍生理论和实验的局限性。

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