Patent ID: 7894958

Claim:
A traction control system for a machine, comprising: at least one driven wheel; at least one motor directly connected to the at least one driven wheel and operating to rotate the at least one wheel; an electronic controller operably associated with the at least one motor and arranged to control the operation of the at least one motor; a speed sensor disposed to measure a rotational speed of the at least one driven wheel and to communicate a wheel speed to the electronic controller; a travel speed sensor disposed to measure a travel speed of the machine and to communicate a travel speed to the electronic controller; a steering system operating to change a travel path of the machine when the steering system is displaced; a steering sensor disposed to measure a displacement of the steering system and to communicate a steering angle to the electronic controller; the electronic controller disposed to: calculate a speed ratio based on the wheel speed and the travel speed; calculate an expected slip ratio based on the steering angle; correct the speed ratio by applying the expected slip ratio to yield a corrected speed ratio that is indicative of a slip condition; and adjust the operation of the at least one motor to address the slip condition.