Tire resonance frequency detecting system having inter-wheel noi

Details Tire resonance frequency detecting system having inter-wheel noi Tire resonance frequency detecting system having inter-wheel noi

1995-08-03

1997-01-21

Chilcot, Richard

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

340448, B60C 2300, B60C 2302

Patent

active

055961410

ABSTRACT:
Tire vibration frequency components of left-hand and right-hand tires are derived from wheel speed signals while a vehicle is traveling. A noise frequency component is detected based on a correlation between the vibration frequency components of the left-hand and right-hand tires, and the noise frequency component is reduced relative to the vibration frequency component. Thereafter, resonance frequencies of each tire are detected using the vibration frequency component from which the noise frequency component is reduced, and tire air pressures are detected on the basis of the resonance frequencies.

REFERENCES:
patent: 4574267 (1986-03-01), Jones
patent: 4630470 (1986-12-01), Brooke et al.
patent: 4907452 (1990-03-01), Yopp
patent: 5392213 (1995-02-01), Houston et al.
U.S. Patent Application No. 08/168,093 filed Dec. 12, 1993; "Tire Air Pressure Detecting Device"; Naito et al., inventors Dec. 1993.

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