Development of a tactile sensor that can measure frictional conditions between tires and roads in order to improve driving safety of cars

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The present study proposed a simple tactile sensor that can measure vertical load, frictional load and its direction simultaneously and tried to equip a tire with the proposed sensor so as to measure the frictional coefficient of road. In order to confirm the availability of the sensor, a simple driving simulator that can apply high-load to a tire in arbitrary direction were developed. By using the simulator, the study has measured the frictional coefficients of various surfaces by using the tire equipped with the tactile sensor. As a result, it has been confirmed that the sensor can measure wide range of frictional coefficients under high-load by considering the deformation of the tire.