Method of estimating vehicle speed

Details Method of estimating vehicle speed Method of estimating vehicle speed

1987-03-30

1988-11-29

Kashnikow, Andres

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303103, 36442601, B60T 868, B60T 860, G06G 778

Patent

active

047876824

ABSTRACT:
In estimating a vehicle speed from a wheel speed and comparing the wheel speed with a reference threshold provided on the basis of that vehicle speed to control the supplying of a hydraulic braking pressure to wheel brakes, when the wheel speed is larger than the estimated vehicle speed, a predetermined value is added to that estimated vehicle speed to amend the latter, and conversely, when the wheel speed is smaller than the estimated vehicle speed, a predetermined value is subtracted from that estimated vehicle speed to amend the latter. Thus, the amended values are used as an estimated vehicle speed for controlling the hydraulic braking pressure.

REFERENCES:
patent: 3883186 (1975-05-01), Rodi
patent: 4094556 (1978-06-01), Okamoto et al.
patent: 4338667 (1982-07-01), Cook et al.
patent: 4446522 (1984-05-01), Sato et al.
patent: 4468740 (1984-08-01), Beck et al.

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