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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Three Three-Axis IEPE Accelerometers on the Inner Liner of a Tire for Finding the Tire-Road Friction Potential Indicators
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Three Three-Axis IEPE Accelerometers on the Inner Liner of a Tire for Finding the Tire-Road Friction Potential Indicators

机译：轮胎内衬上的三个三轴IEPE加速度计用于查找轮胎-道路摩擦势指标

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摘要

Direct tire-road contact friction estimation is essential for future autonomous cars and active safety systems. Friction estimation methods have been proposed earlier for driving conditions in the presence of a slip angle or slip ratio. However, the estimation of the friction from a freely-rolling tire is still an unsolved topic. Knowing the existing friction potential would be beneficial since vehicle control systems could be adjusted before any remarkable tire force has been produced. Since accelerometers are well-known and robust, and thus a promising sensor type for intelligent tires, this study uses three three-axis IEPE accelerometers on the inner liner of a tire to detect friction potential indicators on two equally smooth surfaces with different friction levels. The equal roughness was chosen for both surfaces in order to study the friction phenomena by neglecting the effect of surface texture on vibrations. The acceleration data before the contact is used to differentiate the two friction levels between the tire and the road. In addition, the contact lengths from the three accelerometers are used to validate the acceleration data. A method to differentiate the friction levels on the basis of the acceleration signal is also introduced.
机译：对于未来的自动驾驶汽车和主动安全系统，直接的轮胎-道路接触摩擦估计至关重要。先前已经针对存在滑移角或滑移率的驾驶条件提出了摩擦估​​计方法。然而，从自由滚动轮胎的摩擦力的估计仍然是未解决的话题。知道现有的摩擦潜力将是有益的，因为可以在产生任何显着的轮胎力之前调节车辆控制系统。由于加速度计是众所周知的且坚固耐用，因此是用于智能轮胎的有希望的传感器类型，因此本研究在轮胎内衬层上使用三个三轴IEPE加速度计来检测具有不同摩擦水平的两个同样光滑的表面上的摩擦势指标。为两个表面选择相等的粗糙度，以便通过忽略表面纹理对振动的影响来研究摩擦现象。接触之前的加速度数据用于区分轮胎和道路之间的两个摩擦等级。另外，来自三个加速度计的接触长度用于验证加速度数据。还介绍了一种基于加速度信号来区分摩擦水平的方法。

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