System and method for determining relative brake factors

Details System and method for determining relative brake factors System and method for determining relative brake factors

1994-04-22

1995-05-16

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188 3R, 188181T, 303 961, 303 962, 303100, 303DIG3, 303DIG4, 303112, 303 20, B60T 1300

Patent

active

054154669

ABSTRACT:
A large articulated vehicle, such as a tractor semi-trailer truck often has a number of braking locations each having a number of brake sites. To properly balance the work performed at the various brake sites in decelerating the vehicle, it is necessary to determine the relative brake factors of each site. The brake factors characterize the braking performance for a particular delivered braking pressure. A system and method for determining the relative brake factors for such a vehicle is provided. The vehicle is decelerated at a known rate while delivered braking pressure is measured and recorded for each braking location. A system of simultaneous equations is then solved to determine the relative brake factors. Once the brake factors have been determined during a sequence of controlled braking events, subsequent braking may be modified to achieve a work-balanced braking mode.

REFERENCES:
patent: 4093316 (1978-06-01), Reihecke
patent: 5312168 (1994-05-01), Breen

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