Electrohydraulic torque transfer device and control system

A method of controlling a torque transfer device that is configured to transmit rotary power between a first component and a second component, the rotary power having a torque with a magnitude, the method comprising:

• establishing a magnitude of a minimum torque associated with the rotary power;
• determining whether a magnitude of a requested torque is greater than the magnitude of the minimum torque transfer device output torque;
• controlling the torque transfer device to output rotary power such that the magnitude of the torque of the rotary power is equal to the magnitude of the minimum torque when the magnitude of the minimum torque is greater than or equal to the magnitude of the requested torque;
• and
• controlling the torque transfer device to output rotary power such that the magnitude of the torque of the rotary power is greater than the magnitude of the requested torque when the magnitude of the minimum torque is less than the magnitude of the requested torque.