Fuzzy-logic-based decision support method in a system for monitoring motor vehicle tire pressure

摘要

The present invention includes a method for measuring the occurrence of pressure defects in at least one tire mounted on a vehicle wheel. The measured value is due to the analysis of the angular velocity of the wheel according to the first algorithm based on the analysis of the speed difference between the wheels and the second algorithm based on the spectral analysis of the wheel speed. Each of the first and second algorithms determines a low expansion probability value of each wheel defined by a confidence factor associated with each probability value provided according to the rotation time of the wheel in each speed range and a relative speed range of the plurality of wheel speed ranges. to provide. The method is characterized by utilizing a decision module based on the theory of fuzzy subsets. These input signals are the low expansion probability values derived from the first and second algorithms and the related reliability factors applied to each speed range. The determination module provides an output of a robust probability value representing the pressure defect associated with the full speed range for each wheel and algorithm.