Brake noise detection device

Details Brake noise detection device Brake noise detection device

2005-05-31

2005-05-31

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S659000, C073S660000

Reexamination Certificate

active

06898976

ABSTRACT:
An output signal that accords with a rotation speed of a brake rotor of a respective wheel is output by a vehicle wheel speed sensor. A noise frequency identification portion identifies a frequency component that corresponds to brake noise from this output signal. It is possible, for example, to identify a frequency component that corresponds to brake squeal by performing fast Fourier transform (FFT) calculation for the vehicle wheel speed. Further, a noise detection portion determines that brake noise is being generated when the frequency component identified by the noise frequency identification portion is equal to or more than a predetermined value.

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patent: A-2000-283193 (2000-10-01), None

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