Fluid-pressure and analogous brake systems – Speed-controlled – Specific mu determination
Patent
1998-10-29
2000-12-19
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Specific mu determination
303 3, 303 15, 3031131, B60T 860
Patent
active
06161906&
ABSTRACT:
An anti-skid control system includes a hydraulic pressure generator for generating hydraulic brake pressure, hydraulic pressure control valves which control the brake hydraulic pressure of the wheel cylinders, wheel speed sensors for detecting the rotational speed of the wheels, and a controller for controlling the hydraulic pressure control valves to decompress or pulse-boost the brake hydraulic pressure in the wheel cylinders based on the output signal of the wheel speed sensors. A brake pedal depression amount detecting device detects the amount of depression of the brake pedal. The controller includes a road surface change judging device for judging that the road surface has shifted from a surface having a low coefficient of friction to a surface having a high coefficient of friction when a continuous run pulse number or a continuous run time of the pulse boost control exceeds a preset value. A duty ratio changing device changes the duty ratio of the pulse boost control to increase the rate of boost time when the road surface change judging device has judged a shift from a road surface having a low coefficient of friction to a road surface having a high coefficient of friction. A pulse boost executing device controls the hydraulic pressure control valve to pulse-boost the brake hydraulic pressure of the wheel cylinders based on the duty ratio changed by the duty ratio changing device, and a preset value changing device changes the preset value based on the output signal of the depression amount detecting device.
REFERENCES:
patent: 4666218 (1987-05-01), Masaki et al.
patent: 4970649 (1990-11-01), Matsuda
patent: 5470136 (1995-11-01), Tozu et al.
patent: 5664850 (1997-09-01), Kuno et al.
patent: 5833328 (1998-11-01), Matsuda
patent: 5868473 (1999-02-01), Kato et al.
Ohbai Katsuo
Sakane Shinsuke
Aisin Seiki Kabushiki Kaisha
Butler Douglas C.
Talavera Melanie
LandOfFree
Anti-skid control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-skid control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-skid control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-265681