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    • 4. 发明授权
    • Tire air pressure estimating apparatus
    • 轮胎气压估计装置
    • US06385553B1
    • 2002-05-07
    • US09210960
    • 1998-12-15
    • Toshiharu NaitoNobuyoshi OnogiTakeyasu Taguchi
    • Toshiharu NaitoNobuyoshi OnogiTakeyasu Taguchi
    • B60C2300
    • B60C23/062B60C23/061
    • In a tire air pressure estimating apparatus, wheel speeds of respective wheels are successively calculated when a vehicle is running. At least one of a tire resonance frequency and a tire spring constant is extracted from vibration frequency components included in a wheel speed signal with respect to each of tires. Tire air pressures of drive wheels are estimated based on the extracted tire resonance frequencies or the tire spring constants. Rotational state values (e.g. wheel speed values) of driven wheel tires are calculated based on the detected wheel speeds. Tire air pressures of driven wheels are estimated based on a deviation of the rotational state values of the driven wheel tires.
    • 在轮胎气压推定装置中,当车辆行驶时,依次计算各车轮的车轮速度。 轮胎共振频率和轮胎弹簧常数中的至少一个相对于每个轮胎从包括在车轮速度信号中的振动频率分量中提取出来。 基于提取的轮胎共振频率或轮胎弹簧常数来估计驱动轮的轮胎空气压力。 基于检测到的车轮速度来计算从动轮胎的旋转状态值(例如车轮速度值)。 基于从动轮轮胎的旋转状态值的偏差来估计从动轮的轮胎气压。
    • 6. 发明授权
    • Apparatus for estimating tire air pressure
    • 用于估计轮胎气压的装置
    • US6092028A
    • 2000-07-18
    • US131171
    • 1998-08-07
    • Toshiharu NaitoTakeyasu TaguchiHideki KabuneYuichi InoueNobuyoshi Onogi
    • Toshiharu NaitoTakeyasu TaguchiHideki KabuneYuichi InoueNobuyoshi Onogi
    • B60C23/06B60C23/00
    • B60C23/062B60C23/061
    • A signal processor comprises wheel speed-detecting means for detecting a wheel speed signal including vibrational components of a tire, extraction means for extracting a resonant frequency of the vibrational components of the tire or a tire spring constant based on the wheel speed signals, air pressure-estimating means for estimating a tire air pressure based on the resonant frequency or the tire spring constant, and determining means for determining whether the estimated tire air pressure is abnormal or not by comparing with a determination value. Further, correcting means corrects at least one of the determination value, the estimated tire air pressure, the resonant frequency and the tire spring constant in response to a tire temperature. A temperature-sensing device is mounted inside the signal processor to detect a temperature associated with the tire temperature.
    • 信号处理器包括用于检测包括轮胎的振动分量的车轮速度信号的车轮速度检测装置,用于基于车轮速度信号提取轮胎的振动分量的共振频率或轮胎弹簧常数的提取装置,空气压力 - 估计装置,用于基于共振频率或轮胎弹簧常数来估计轮胎气压;以及确定装置,用于通过与确定值进行比较来确定估计的轮胎气压是否异常。 此外,校正装置根据轮胎温度校正判定值,估计轮胎气压,共振频率和轮胎弹簧的至少一个。 温度感测装置安装在信号处理器内以检测与轮胎温度相关的温度。