ADAPTIVE BRAKING SYSTEM

摘要

An adaptive braking system for an automotive vehicle is disclosed. The system is adapted to simultaneously control both wheels mounted on a common axle by a single modulating device and control unit. The system includes circuitry which generates a signal which approximates vehicle velocity, and three distinct modes of operation are possible depending upon the vehicle velocity and upon the rotational velocity of the wheels on the axle. The primary mode is operational when both of the wheels are rotating at a rotational velocity greater than some predetermined low reference level and the vehicle velocity is greater than a predetermined reference level. the unbalanced mode occurs when the vehicle is travelling at a velocity greater than another predetermined reference level and one of the wheels is rotating at a rotational velocity greater than a corresponding predetermined reference level and the other wheel is rotating at a rotational velocity less than the corresponding reference level. The secondary mode of operation occurs when the vehicle velocity is greater than the another predetermined reference level and both of the wheels are rotating below their corresponding reference levels. The three modes provide adaptive control in vehicle brakes under all road surface and velocity conditions, while permitting the system to terminate operation when the vehicle is stopped.