Title:
TIRE PRESSURE REDUCTION DETECTION DEVICE, METHOD AND PROGRAM
Document Type and Number:
Japanese Patent JP2016088468
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a tire pressure reduction detection device capable of improving estimation accuracy of a tire resonance frequency by eliminating an influence of periodic noise.SOLUTION: A tire pressure reduction detection device comprises: a rotation speed information detection part for detecting rotation speed information of each wheel of a vehicle; a resonant frequency estimation part for estimating torsional resonant frequencies of the rotation speed information in time series on the basis of the rotation speed information obtained by the rotation speed information detection part; and a determination part for determining reduction in pressure of a tire mounted to each wheel on the basis of the estimated torsional resonant frequencies. The resonant frequency estimation part comprises a noise removal part for removing noise, which overlaps with wheel speed signals that are the rotation speed information, for each wheel by using an active noise control technology.SELECTED DRAWING: Figure 1
Inventors:
YANASE MINAO
Application Number:
JP2014229076A
Publication Date:
May 23, 2016
Filing Date:
November 11, 2014
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
B60C23/06; H03H17/06; H03H21/00
Domestic Patent References:
| JP2014035207A | 2014-02-24 | |||
| JP2008004150A | 2008-01-10 | |||
| JPH08272378A | 1996-10-18 |
Foreign References:
| EP1674302A1 | 2006-06-28 | |||
| EP1674302A1 | 2006-06-28 |
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office