Deceleration feedback electronic control system for use in a brake system

A brake control system for obtaining an optimum braking deceleration corresponding to a brake pedal stroke in which a braking force is controlled so that a braking effect corresponding to a human brake operation input quantity is obtained by electronically controlling an auxiliary power other than a human power, said brake control system comprising:

• operation input detecting means for detecting a human operation input quantity;
• operation input start time detecting means for detecting a human operation input start time;
• current deceleration detecting means for detecting a current deceleration of a car speed;
• initial deceleration detecting means for detecting an initial deceleration of the car based on the deceleration derived from said current deceleration detecting means in response to the human operation input start time detected by said operation input start time detecting means;
• control target addition quantity setting means for setting up a control target addition quantity based on a signal of the human operation input quantity detected by said operation input detecting means;
• control target quantity setting means for setting a control target quantity by adding the initial deceleration detected by said initial deceleration detecting means and the control target addition quantity set up by said control target addition quantity setting means;
• and
• control command output means for generating a control command signal by subtracting the control target quantity set up by said control target quantity setting means from the deceleration derived from said current deceleration detecting means.