Mechanical Engineering Department, Universidad Carlos III de Madrid, Avd. De la Universidad, 28911 Madrid, Spain.
School of Mechanical Engineering, University of Birmingham, Edgbaston B15 2TT, UK.
Sensors (Basel). 2020 Mar 21;20(6):1750. doi: 10.3390/s20061750.
Tires are essential components of vehicles and are able to transmit traction and braking forces to the contact patch, contribute to directional stability, and also help to absorb shocks. If these components can provide information related to the tire-road interaction, vehicle safety can be increased. This research is focused on developing the tire as an active sensor capable to provide its functional parameters. Therefore, in this work, we studied strain-based measurements on the contact patch to develop an algorithm to compute the wheel velocity at the contact point, the effective rolling radius and the contact length on dynamic situations. These parameters directly influence the dynamics of wheel behavior which nowadays is not clearly defined. Herein, hypotheses have been assumed based on previous studies to develop the algorithm. The results expose to view an experimental test regarding influence of the tire operational condition (slip angle, vertical load, and rolling velocity) onto the computed parameters. This information is used to feed a fuzzy logic system capable of estimating the effective radius and contact length. Furthermore, a verification process has been carried out using CarSim simulation software to get the inputs for the fuzzy logic system at complex maneuvers.
轮胎是车辆的重要组成部分,能够将牵引力和制动力传递到接触区域,有助于方向稳定性,并有助于吸收冲击。如果这些部件能够提供与轮胎-道路相互作用相关的信息,就可以提高车辆的安全性。本研究专注于开发能够提供其功能参数的主动传感器轮胎。因此,在这项工作中,我们研究了接触区域的基于应变的测量,以开发一种算法来计算动态情况下接触点处的车轮速度、有效滚动半径和接触长度。这些参数直接影响车轮行为的动力学,而目前这方面尚未明确界定。在此,基于先前的研究提出了假设来开发算法。结果表明,轮胎工作条件(滑移角、垂直载荷和滚动速度)对计算参数的影响进行了实验测试。这些信息用于为能够估计有效半径和接触长度的模糊逻辑系统提供输入。此外,还使用 CarSim 仿真软件进行了验证过程,以便在复杂操作中为模糊逻辑系统获取输入。