Abstract
The tire damage classification method is researched on the periodicity detection of ramdomness ultrasonic signals to occur at the driving vehicle tire. Setting method of adaptive threshold is proposed in order to valid pulse detection by tire damage in ultrasonic noise on the road and used low pass filter for decrease signal ramdomness as preprocessing. Time interval of detected pulse is setted the density function depend on the vehicle`s speed and the method of tire damage detection is proposed that measuring the first peak`s time of time density function.The result of time density function in case of one damage material, the first peak`s time is measured within the error limit of tire`s rotation period, 169.8ms and 97.9ms and 81.8ms, about the speed of 50km/h and 80km/h and 100km/h. In case of more than one damage material, the sum of each peak`s time is measured within the error limit of tire`s rotation period about the speed.
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