Vehicle brake control device

A vehicle brake control device comprising:

• a wheel speed acquisition section configured to acquire a wheel speed of one of a front wheel and a rear wheel;
• a wheel acceleration calculation section configured to calculate a wheel acceleration of the one wheel based on the wheel speed;
• an anti-lock brake control section configured to execute an anti-lock brake control for the one wheel based on a slip amount based on the wheel speed and a vehicle speed;
• a bad road determination section configured to determine whether or not a running road surface is a bad road based on the wheel acceleration;
• and
• a bad road amount setting section configured to set a bad road amount for correcting the slip amount based on the determination result of the bad road determination section,
• wherein the wheel acceleration calculation section calculates, as the wheel acceleration, a first wheel acceleration and a second wheel acceleration in which a high-frequency component is attenuated more than the first wheel acceleration,
• wherein the bad road determination section determines that a running road surface is a bad road when the calculated first wheel acceleration is smaller than a second boundary line in an area where the first wheel acceleration is smaller than the second wheel acceleration, and
• wherein the bad road amount setting section increases the bad road amount as the calculated first wheel acceleration is smaller when it is determined that a running road surface is a bad road.