TIRE LOAD ESTIMATION METHOD AND TIRE LOAD ESTIMATION DEVICE

• Main Author: MASAGO TAKESHI
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2018
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PERFORMING OPERATIONS; PHYSICS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL; WEIGHING

In order to provide a method which makes it possible to precisely estimate the load acting on a tire with few sensors, and to provide a device utilizing such a method, provided is a load weight estimation device 10 that estimates the load acting on a tire and that comprises the following: an acceleration sensor 11; an acceleration waveform detection means 13 that detects the acceleration waveformin the radial direction of the tire on the basis of the output of the acceleration sensor 11; a differential acceleration waveform computation means 14 that determines the differential acceleration waveform by differentiating the acceleration waveform; a peak position detection means 15 that detects the position of the peak on the depression end side and the position of the peak on the kick-out end side, appearing in the differential acceleration waveform; a ground contact time ratio computation means 16 that calculates a ground contact time and a rotation time on the basis of these peak positions and computes a groun