A system and method for automatically administering insulin based on a feedforward control. The automatic insulin delivery system may include a computing device comprising a processor, machine readable non-transitory media which stores the coupled-model of the invention, and a monitoring system. The machine readable transitory media may be configured to receive one or more inputs and the coupled-model may utilize a feedforward control to parameterize the inputs and generate an output that can be translated to a type and amount of insulin to be administered by the system. The input(s) received by the machine readable non-transitory media may be created by a user or received from one or more sensors. The method may include providing a model that is stored on a machine readable non-transitory media and administering insulin based on the output provided by the model.