发明名称 |
Tire burst prediction device |
摘要 |
A tire burst predicting device which can predict occurrence of bursting of a tire and gives an alarm properly is provided. A break point frequency is estimated on the basis of time series data of wheel speed detected at a wheel speed sensor from frequency response of a first order model to which a transmission characteristic from a road surface disturbance to a wheel speed is approximated. A braking force gradient corresponding to the estimated break point frequency is estimated, on the basis of a map, which is prestored, representing a relationship between break point frequencies and braking force gradients. Extra high frequency components are eliminated from the estimated braking force gradient by a low pass filter to reduce estimation dispersion. Differentiators detect changing speed of the braking force gradient. An alarm is given when there is a possibility of bursting of tire when the detected changing speed reaches or exceeds a predetermined threshold value.
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申请公布号 |
US6879938(B2) |
申请公布日期 |
2005.04.12 |
申请号 |
US20030380108 |
申请日期 |
2003.04.14 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
ASANO KATSUHIRO;ONO EIICHI;UMENO TAKAJI;OHASHI HIDEKI;KAMIYA KAZUHIRO;MORI YUKIO;NAITO TOSHIHARU |
分类号 |
B60C23/00;B60C23/06;(IPC1-7):G06F19/00 |
主分类号 |
B60C23/00 |
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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