Patent US 5,485,545

A neural network apparatus and method for use in applications such as in a voltage/reactive-power controller in which a neuro control-object simulator and a neuro controller pre-learn so as to make input-output relations of the controller match the input-output relations of a control unit and so as to make input-output relations of the simulator match input-output relations of a control object. The controller re-learns so as to make the output of the simulator match an input corresponding to a desired output of the control object. After re-learning, the controller controls the control-object.