Electronically controlled hydraulic brake system

A method of electronically controlling a brake hydraulic pressure in a brake hydraulic line through a control of a motor of a pressure increasing pump which increases the brake hydraulic pressure, the method comprising:

• calculating an attainment brake hydraulic pressure, which is a maximum brake hydraulic pressure attained when a motor of a pressure increasing pump operates in response to a motor drive current command value;
• obtaining a linear compensation executed attainment brake hydraulic pressure by linearly compensating the attainment brake hydraulic pressure using an actually detected brake hydraulic pressure in the brake hydraulic line;
• obtaining a linear compensation executed motor drive current command value by executing an inverse calculation of a calculation for obtaining the linear compensation executed attainment brake hydraulic pressure, and
• controlling the motor based on the linear compensation executed motor drive current command value.

An electronically controlled hydraulic brake system which controls a motor of a pressure increasing pump on the basis of a motor drive current command value obtained from a target brake hydraulic pressure to bring the brake hydraulic pressure to the target brake hydraulic pressure, the electronically controlled hydraulic brake system comprising:

• attainment brake hydraulic pressure calculating means for calculating an attainment brake hydraulic pressure, which is a maximum brake hydraulic pressure attained when the motor drive current command value is applied to the motor;
• attainment brake hydraulic pressure compensating means for obtaining a linear compensation executed attainment brake hydraulic pressure by linearly compensating the attainment brake hydraulic pressure using an actual brake hydraulic pressure;
• linear compensation executed motor drive current command value calculating means for obtaining a linear compensation executed motor drive current command value by executing an inverse calculation of a calculation executed at the attainment brake hydraulic pressure compensating means on the basis of the linear compensation executed attainment brake hydraulic pressure;
• and
• control means for controlling the motor based on the linear compensation executed motor drive current command value.