Patent ID: 8706375

Claim:
A brake force control device for a vehicle comprising: a brake pedal that receives a pedal depression force from a driver at a time of a brake operation; an electric booster that assists the pedal depression force with a pushing force of an electric actuator; a master cylinder that works as follows: the pedal depression force is inputted from an input rod to a master cylinder piston via a spring, an assist pushing force according to the electric booster is added to the pedal depression force, and a master cylinder pressure is generated and applied to wheel cylinders on each wheel; a pedal depression force calculator that detects the pedal depression force applied to the brake pedal during the brake operation; a pedal stroke sensor that detects the pedal stroke of the brake pedal during the brake operation; and a controller including a first brake target value calculator that calculates a first brake target value based on the pedal depression force; a second brake target value calculator that calculates a second brake target value based on the pedal stroke; a contribution degree setting section that sets a contribution degree of the first brake target value to be greater than a contribution degree of the second brake target value when a determined brake target value is estimated to be a low region based on at least one of the pedal depression force and the pedal stroke; and a brake target value calculator that calculates a first brake target value portion and a second brake target value portion according to the contribution degrees set according to the contribution degree setting section and obtains a final brake target value by adding the first brake target value portion and the second brake target value portion.