Caterpillar Inc.

Ron L Satzler

Eric D Stemler

Kent Allen Casey

The control system and method includes a plurality of clutch actuators adapted to be connected to clutches disposed for connecting members of the transmission to an input or output, respectively; first and second electrical motor/generators connected to respective members of the transmission and operable in a motor mode for controllably rotating the members and in a generator mode controllably rotated by the members to generate electrical energy; a sensor for sensing a speed representative of a rotational speed of the input or output; and a processor operably connected to the sensor, the motor/generators and the clutch actuators, the processor being operable for operating one of the motor/generators in the generator mode while operating another of the motor/generators in the motor mode powered by the one of the motor/generators so as to controllably rotate selected of the members of the transmission at speeds corresponding to a sensed rotational speed of the input or output for disconnecting one of the selected members from the input or output and connecting another of the selected members to the input or output.

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Princeville, IL, United States of America

Ron L Satzler