System for detecting frictional state of running road surface

Details System for detecting frictional state of running road surface System for detecting frictional state of running road surface

1995-10-20

1998-05-26

Zanelli, Michael

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

701 73, 303150, B60T 832

Patent

active

057583056

ABSTRACT:
In order to correctly detect the frictional state of a running road surface, the running road surface is determined as a low-friction road surface, when tire lock is detected by tire lock detection device, and besides a state in which vehicle deceleration obtained by vehicle deceleration detection means is greater than a predetermined value, is shorter than a predetermined time in a period extending from the start of braking until the tire lock.

REFERENCES:
patent: 3861756 (1975-01-01), Arikawa
patent: 4770226 (1988-09-01), Yamaguchi et al.
patent: 4936636 (1990-06-01), Matsuda
patent: 5092662 (1992-03-01), Okubo
patent: 5123715 (1992-06-01), Okubo
patent: 5257857 (1993-11-01), Okazaki
patent: 5292187 (1994-03-01), Onaka et al.
patent: 5443583 (1995-08-01), Sugawara et al.
patent: 5444625 (1995-08-01), Tanaka et al.

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