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1. 发明授权

US5982279A Tire air pressure detecting device 失效
标题翻译：轮胎气压检测装置
公开(公告)号：US5982279A
公开(公告)日：1999-11-09
申请号：US939048
申请日：1997-09-26
申请人： Motonori Tominaga , Yuuichi Inoue , Kenji Tomiita , Shinjiro Fukada , Yoshihiro Nishikawa , Takaji Umeno , Hideki Ohashi
发明人： Motonori Tominaga , Yuuichi Inoue , Kenji Tomiita , Shinjiro Fukada , Yoshihiro Nishikawa , Takaji Umeno , Hideki Ohashi
IPC分类号： B60C23/06 , B60C23/00
CPC分类号： B60C23/062 , B60C23/061
摘要： To accurately detect a resonance frequency of tire even in high speed range by which tire air pressure state of each wheel is known, a calculation processing unit to which detection signals of wheel speed and resonance frequencies of tire are inputted calculates a timewise change amount of a wheel speed deviation that is a difference between wheel speed ratios of front and rear wheels. Then, it makes corrections to remove the influence of timewise change amounts of resonance frequencies of front wheels from timewise change amounts of wheel speed deviations based on a relationship between the resonance frequency and the wheel speed deviation when air pressure of the tire is changed. The unit then converts the corrected timewise change amount of the rotational state into the timewise change amount of the resonance frequencies of the rear wheels based on the above-described relationship and the resonance frequencies of the rear wheels and the timewise change amounts of the resonance frequencies of the rear wheels which have been accurately detected before the vehicle speed exceeds an upper limit value.
摘要翻译：为了准确地检测轮胎的共振频率，即使在已知轮胎气压状态的高速范围内，输入轮胎速度检测信号和轮胎的共振频率的计算处理单元，也可以计算出轮胎的时间变化量车轮速度偏差是前轮和后轮的车轮速比之差。然后，根据轮胎的气压变化时的谐振频率和车轮偏差之间的关系，根据轮速偏差的时间变化量，进行修正，以消除前轮的谐振频率的时间变化量的影响。基于上述关系和后轮的共振频率和谐振频率的时间变化量，该单元然后将校正的旋转状态的时间变化量转换成后轮的谐振频率的时间变化量在车速超过上限值之前已经被准确地检测到的后轮。

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