Method for detecting local runout of a tire

Details Method for detecting local runout of a tire Method for detecting local runout of a tire

2011-04-19

2011-04-19

Allen, Andre J (Department: 2855)

Measuring and testing

Tire, tread or roadway

Reexamination Certificate

active

07926338

ABSTRACT:
A raw runout signal of a tire is bandpass filtered utilizing appropriate, empirically determined, low and high tire order corners to determine the bandpass of the bandpass filter. A band-limited runout signal is then obtained and is examined for characteristic signal patterns of local runout which are known to exhibit periodically modulated cabin interior sound during vehicle movement, usually driving conditions involving highway speeds and smooth roads, which is audibly detectable by passengers based upon, for example, empirical analysis wherein the maximum gain of the bandpass filter is, preferably, unity.

REFERENCES:
patent: 4311044 (1982-01-01), Marshall et al.
patent: 6739186 (2004-05-01), Schartz et al.
patent: 01314935 (1989-12-01), None
patent: 07243947 (1995-09-01), None
patent: 2009031034 (2009-02-01), None

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