Braking pressure threshold limiting method of brake traction control system

A braking pressure threshold setting method of a brake traction control system, the method comprising:

• a driving wheel slip determination step of determining whether a slip occurs in a driving wheel by detecting the slip of the driving wheel;
• a Brake Traction Control System (“BTCS”) control determination step of determining whether a BTCS control of a low-frictional driving wheel is being performed after the driving wheel slip determination step;
• a high-frictional driving wheel's instability determination step of determining whether instability occurs in a high-frictional driving wheel by detecting the slip in the high-frictional driving wheel during the BTCS control;
• a breaking pressure cumulative-calculation step of consistently and cumulatively calculating a braking pressure applied to the low-frictional driving wheel for a predetermined period when the instability occurs in the high-frictional driving wheel;
• a comparison step of comparing the consistently and cumulatively calculated breaking pressure value with a pre-set braking pressure threshold of the low-frictional driving wheel;
• and
• a step of setting, when the cumulatively calculated braking pressure value exceeds the pre-set braking pressure threshold of the low-frictional driving wheel, the braking pressure, which is applied to the low-frictional driving wheel when the slip occurs in the high-frictional driving wheel, as a low-frictional driving wheel braking pressure threshold stored as a low-frictional driving wheel brake control value.