Control circuit having adaptive turn-off feature for a vehicle s

Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

303 20, B60T 808

Patent

active

041643607

ABSTRACT:
A control circuit having an adaptive turn-off feature for a vehicle skid control braking system, wherein the control circuit is responsible for producing a brake control signal which is effective to disengage the brakes of the vehicle by actuating a brake control valve to a fluid pressure-relieving position. The control circuit features an adaptive turn-off circuit which terminates the brake control signal, thereby enabling re-engagement of the vehicle brakes depending on the coefficient of friction of the road surface being travelled by the vehicle and the degree to which the wheel speed departs from the vehicle speed during the brake disengage cycle of the control circuit. The adaptive turn-off circuit of the control circuit utilizes a wheel departure amplifier which provides an inverted wheel departure signal as determined during a brake disengage cycle of the control circuit, the inverted wheel departure signal being referenced to a zero voltage. The adaptive turn-off circuit also includes a lead resistor which effectively shifts the inverted wheel departure signal by an amount proportional to the coefficient of friction of the road surface. The adaptive turn-off circuit further includes a turn-off threshold circuit, the output of the wheel departure amplifier being received as an input by the turn-off threshold circuit so as to produce an output signal from the adaptive turn-off circuit terminating the brake control signal from the control circuit whenever the output of the wheel departure amplifier falls below the threshold value of the turn-off threshold circuit.

REFERENCES:
patent: 3578819 (1971-05-01), Atkins
patent: 3825305 (1974-07-01), Kasselmann et al.
patent: 3833270 (1974-09-01), Gotz et al.
patent: 3861756 (1975-01-01), Arikawa
patent: 3863993 (1975-02-01), Fleischer et al.
patent: 3980349 (1976-09-01), Cook
patent: 3982793 (1976-09-01), Jones
patent: 3993363 (1976-11-01), Skoyles et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Control circuit having adaptive turn-off feature for a vehicle s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control circuit having adaptive turn-off feature for a vehicle s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control circuit having adaptive turn-off feature for a vehicle s will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1375176

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.