Fluid-pressure and analogous brake systems – Speed-controlled – Left or right speed comparison
Patent
1992-05-15
1995-08-22
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Left or right speed comparison
303139, 3031131, B60T 858
Patent
active
054435838
ABSTRACT:
the present invention, a counter value is increased by a predetermined increment when it is judged that front wheel speed is being decelerated and speed difference between front and rear wheels is higher than a setting value, and the counter value is decreased by a predetermined decrement when it is judged that speed difference between front and rear wheels is not higher than the setting value. Next, if it is judged that the counter value is higher than the setting value, a high .mu. flag is set. If it is judged that the counter value is not higher than the setting value, the high .mu. flag is cleared. Thus, it is judged whether road surface has a high .mu. value or not by speed difference between front and rear wheels and by duration, during which the speed difference is maintained. When a high .mu. flag is set, a control value for high .mu. value is set as a control value relating to anti-skid brake control, and if the high .mu. flag is cleared, a control value for low .mu. value is set.
REFERENCES:
patent: 3545817 (1970-12-01), Yarber
patent: 3893330 (1975-07-01), Shute et al.
patent: 4033634 (1977-07-01), Arai et al.
patent: 4779447 (1988-10-01), Rath
patent: 5092662 (1992-03-01), Okubo
patent: 5123715 (1992-06-01), Okubo
Akimoto Satoshi
Sugawara Ryuta
Jidosha Kiki Co. Ltd.
Oberleitner Robert J.
Poon Peter M.
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