System and method for optimizing regenerative braking in adaptive cruise control

摘要

A vehicle includes traction wheels, an electric machine configured to provide regenerative braking torque to the traction wheels, wheel brakes configured to provide friction braking torque to the traction wheels, and at least one power source configured to provide drive torque to the traction wheels. The vehicle additionally includes a sensor configured to detect an object in front of it and at least one controller. The controller is configured to control the power source, the wheel brakes, and the electric machine according to an Adaptive Cruise Control (ACC) algorithm. The ACC algorithm is configured to drive the electric machine to provide regenerative braking torque without actuating the wheel brakes in response to a detected forward object and a maximum regenerative braking distance. The maximum regenerative braking distance is calculated based on a limit of regenerative braking from the powertrain and a distance to the object in front of it.