发明名称 |
Method and apparatus for estimating tire air pressure |
摘要 |
The invention provides an apparatus and a method of estimating tire air pressure with high accuracy from vehicle operation at low at high speeds regardless of various elements to be mounted to the vehicle. Estimation of tire air pressure based on a resonance frequency extracted based on a wheel speed signal outputted from a wheel speed sensor corresponding to the respective tire and estimation of tire air pressure based on a dynamic load radius derived based on the wheel speed signal, are used to selectively switch in accordance with a magnitude of a variance value of the resonance frequency at a plurality of time points.
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申请公布号 |
US2002095264(A1) |
申请公布日期 |
2002.07.18 |
申请号 |
US20010993630 |
申请日期 |
2001.11.27 |
申请人 |
KAMIYA KAZUHIRO;MORI YUKIO;UMENO TAKAJI;OHASHI HIDEKI;INOUE YUICHI;TAGUCHI TAKEYASU |
发明人 |
KAMIYA KAZUHIRO;MORI YUKIO;UMENO TAKAJI;OHASHI HIDEKI;INOUE YUICHI;TAGUCHI TAKEYASU |
分类号 |
B60C23/06;G01H13/00;G01L17/00;G01N3/06;G01N3/40;(IPC1-7):G01L7/00;G01N11/00;G01F17/00;G06F19/00;G01F23/00 |
主分类号 |
B60C23/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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