Antilock brake system with motor current control.

摘要

The period of an initial apply motor current in each apply phase of an antilock brake control cycle in an antilock braking system having a motor driven pressure modulator is adaptively controlled following a sensed recovery from an incipient wheel lockup condition to establish substantially a steady state condition relationship between current and pressure before motor current is ramped to ramp brake pressure. The period of the initial apply motor current is made a function of the amount of pressure decrease during a prior release phase portion of the antilock brake control cycle to account for the greater increase in brake pressure to the initial reapply value.