According to the present invention, there is provided a method and system
for providing brake control, autobrake and antiskid brake functionality by recognizing
that the only difference between the three functions is the amount of deceleration
they allow. Unlike a conventional system where the pedals represent brake pressure,
the present invention interprets pedal commands as desired deceleration. The method
and system involve controlling acceleration of a wheel reference speed and setting
a desired slip based on autobrake settings, pedal positions, and various parameters.
A proportional/integral/derivative algorithm controls wheel speed and is monitored
for normal operation. Abnormal operation generates control parameters which are
used to alter the wheel reference speed and its deceleration. Additionally, vehicles
using the invention will benefit from improved yaw stability, even brake temperatures
and differential braking during antiskid operation.