Braking control system and method for eco-friendly vehicle

A braking control system for an eco-friendly vehicle, comprising:

• a hybrid control unit (HCU) configured to determine target deceleration and actual deceleration of the eco-friendly vehicle based on information collected in the eco-friendly vehicle when braking;
• wherein the HCU is further configured to:
• calculate a target deceleration torque and an actual deceleration torque from the determined target deceleration and the determined actual deceleration of the eco-friendly vehicle using vehicle equivalent inertia information;
• calculate a torque error which is a difference value between the target deceleration torque and the actual deceleration torque;
• correct a pre-correction target regenerative braking torque by the calculated torque error and calculate a post-correction target regenerative braking torque;
• and
• a motor controller configured to adjust a regenerative braking torque of a motor according to the calculated post-correction target regenerative braking torque and operate the motor accordingly,
• wherein the HCU is configured to adaptively calculate equivalent inertia of the eco-friendly vehicle using real-time information collected in the eco-friendly vehicle, and
• wherein the HCU is configured to calculate the target deceleration torque of the eco-friendly vehicle by multiplying the determined target deceleration of the eco-friendly vehicle by vehicle equivalent inertia and calculate the actual deceleration torque of the eco-friendly vehicle by multiplying the determined actual deceleration of the eco-friendly vehicle by the vehicle equivalent inertia.