TIRE PNEUMATIC DROP DETECTION DEVICE AND METHOD, AND TIRE PNEUMATIC DROP DETECTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a tire pneumatic drop detection device detecting a tire pneumatic drop with high accuracy by stably estimating a resonance frequency. SOLUTION: The tire pneumatic drop detection device includes: an information detection means for periodically detecting rotating speed information, an outside air temperature signal, a turning signal and a wheel torque signal of a tire of each wheel of a vehicle; a rotating acceleration information arithmetic means for calculating rotating acceleration information on the tire from the rotating speed information obtained by the information detection means; a frequency characteristic estimation means for estimating a frequency characteristic of the rotating speed information from the rotating speed information obtained by the information detection means; and a decision means for deciding the pneumatic drop of the tire based on the estimated frequency characteristic. COPYRIGHT: (C)2010,JPO&INPIT