Fluid-pressure and analogous brake systems – Speed-controlled – Sensing jerk – acceleration – or deceleration
Patent
1996-04-12
1998-06-16
Schwartz, Chris
Fluid-pressure and analogous brake systems
Speed-controlled
Sensing jerk, acceleration, or deceleration
303185, B60T 858
Patent
active
057659311
ABSTRACT:
As illustrated in FIG. 1, the wheel accelerations of the respective wheels are calculated from the detected wheel speeds, variations in the wheel accelerations are calculated from these wheel accelerations, the cumulative sums of the variations in the wheel accelerations are calculated from these variations, and the presumptive vehicle deceleration is calculated from the cumulative sums, whereby the vehicle deceleration can be accurately presumed without employing an acceleration sensor or the like. Further, the presumptive vehicle speed is calculated accurately using the presumptive vehicle deceleration. Still further, the slip factors of the respective wheels are calculated from the differences between the presumptive vehicle speed and the wheel speeds so as to perform an antiskid brake control at low cost and at a high precision.
REFERENCES:
patent: 4395761 (1983-07-01), Sato et al.
patent: 4769758 (1988-09-01), Masaki et al.
patent: 5012417 (1991-04-01), Watanabe et al.
patent: 5123714 (1992-06-01), Mori
patent: 5187666 (1993-02-01), Watanabe
patent: 5522652 (1996-06-01), Negrin et al.
Aizawa Hideyuki
Ito Shouji
Schwartz Chris
Toyota Jidosha & Kabushiki Kaisha
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