Slip control method for traction control system

Abstract

A slip control method for a traction control system (TCS) used in vehicles. The method includes the steps of generating variables for controlling engine output according to speeds of each wheel after a drive state is determined using wheel speeds, a throttle valve opening, and an accelerator pedal position; determining whether the TCS requires activation or de-activation according to the generated variables and the determined drive state; generating a first control variable for traction control after performing initial traction control if it is determined that immediately previous traction control was not performed, and directly generating a second control variable for traction control if it is determined that immediately previous traction control was performed, the first control variable and the second control variable being generated if it is determined in the previous step that the TCS requires activation; and controlling drive wheel speed through engine output control, the engine output control being performed by varying the throttle valve opening according to either the first control variable or the second control variable.

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