Brake control system

Details Brake control system Brake control system

1990-05-31

1992-02-25

Oberleitner, Robert J.

Brakes

Wheel

Axially movable brake element or housing therefor

188157, 303 20, F16D 5508

Patent

active

050905180

ABSTRACT:
A brake system using a pair of brake apply and release force units, the units having electric motors with non-backdriveable mechanical output members to supply the needed brake apply force to limit of capability of the motors. Piezoelectric elements that generate high forces with low expansion during rapid rates of change of applied voltage are positioned in brake apply force-transmitting series with the motor output members. These elements are alternately energerized with applied voltage and deenergized, in opposite phase relation. The piezoelectric expansion effect of each energized element is mechanically captured in each energization cycle by the motor unit having the deenergized element so that the brake apply forces actually applied to actuate the brake are increased well beyond the maximum output of the motors. This is obtained by the alternating energization of the piezoelectric elements and the alternating follow-up actions of the motors, with the non-backdrivable arrangements acting to store the mechanical force increases so attained. Wheel lock control may be attained. When actuated, this feature sets the output force generated by the motors, deenergizes the piezoelectric elements, and then concurrently energizes and deenergizes them to obtain a brake pumping action while preventing excessive wheel slip.

REFERENCES:
patent: 3420580 (1969-01-01), Dymond
patent: 4602702 (1986-07-01), Ohta et al.
patent: 4602702 (1986-07-01), Ohta et al.
patent: 4623044 (1986-11-01), Ohta et al.
patent: 4629039 (1986-12-01), Imoto et al.
patent: 4653815 (1987-03-01), Agarwal et al.
patent: 4705323 (1987-11-01), Imoto
patent: 4765140 (1988-08-01), Imoto et al.
patent: 4836338 (1989-06-01), Taig
patent: 4854424 (1989-08-01), Yamatoh et al.
patent: 4860859 (1989-08-01), Yamatoh et al.
patent: 4932726 (1990-06-01), Iwata et al.
patent: 4962969 (1990-10-01), Davis

Affiliated with

Also associated with

Rating

Brake 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 Brake control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brake control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1887257