Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1996-08-02
1998-05-19
Dombroske, George M.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
340442, 364558, B60C 2300
Patent
active
057538093
ABSTRACT:
To provide a tire pressure estimating system which is capable of estimating tire pressure based on a signal representing the rotational speed of a vehicle wheel via a small amount of processing by using low-capacity memory, a wheel speed sensor is provided for each wheel of a vehicle. A pulse signal output by the wheel speed sensor is supplied to a signal processor. In the signal processor, the rotational speed of each vehicle wheel is found from the pulse signal. The signal processor adopts a second-order linear prediction model for the rotational speed of the vehicle wheel and vibration of the tire using parameters identified from values of the rotational speed. A resonance frequency is then found from the identified parameters. Finally, the tire pressure is estimated from a linear relationship between the pressure and the resonance frequency.
REFERENCES:
patent: 5218862 (1993-06-01), Hurrell, II et al.
patent: 5252946 (1993-10-01), Walker et al.
patent: 5497657 (1996-03-01), Taguchi et al.
patent: 5541859 (1996-07-01), Inoue et al.
patent: 5553491 (1996-09-01), Naito et al.
patent: 5595141 (1997-01-01), Udelle et al.
"Method For Measuring Tire Pressure Vibration" Avtomob Transp No. 12, pp. 41-42 (1980).
Mikio Kanai, "Parameter Estimation Rules", Chapter 2.2, Robust Adaptive Control, Sep. 25, 1989, pp. 48-51 (See Specification p. 18).
Tooru Katayama, "Least Squares Method", Chapter 5, Beginning of System Identification, May 25, 1994, pp. 71-73 (See Specification p. 18).
Idogaki Takaharu
Matsumoto Naoki
Ogusu Koji
Tamura Shinichi
Amrozowicz Paul D.
Dombroske George M.
Nippondenso Co. Ltd.
LandOfFree
Tire pneumatic pressure estimating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tire pneumatic pressure estimating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tire pneumatic pressure estimating apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1854399