Vehicle brake hydraulic pressure control apparatus

A vehicle brake hydraulic pressure control apparatus which controls to transmit hydraulic pressure generated in a hydraulic pressure source to wheel brakes, comprising:

• normally open linear solenoid valves which allow transmission of the hydraulic pressure from the hydraulic pressure source to the wheel brakes and whose valve opening amounts are adjusted by energization amounts thereof;
• normally closed solenoid valves which allow hydraulic pressures within the wheel brakes to escape therefrom;
• and
• a control unit which controls the energization amounts of the normally open linear solenoid valves and the normally closed solenoid valves so as to switch the hydraulic pressures within the wheel brakes to a pressure increasing state, a pressure holding state or a pressure reducing state, wherein
• the control unit comprises:
• an initial current value calculation unit which calculates an initial current value to open the normally open linear solenoid valve when the hydraulic pressure is shifted from the pressure reducing state or the pressure holding state to the pressure increasing state;
• a valve opening amount increasing unit which reduces the energization amount from the initial current value so as to increase a valve opening amount of the normally open linear solenoid valve;
• an offsetting necessity determination unit which determines based on a predetermined condition whether or not the energization amount needs to be offset to an increase side only for a predetermined time period when the valve opening amount increasing unit reduces the energization amount;
• and
• an energization amount offsetting unit which executes an energization amount offsetting operation when the offsetting necessity determination unit determines that the energization amount needs to be offset, wherein the predetermined condition, on the basis of which the offsetting necessity determination unit determines whether or not the energization amount needs to be offset, is that:
• the initial current value calculated by the initial current value calculation unit is less than a predetermined value, and a vehicle body speed is also less than a predetermined value.