Control device, control method, incinerator facility, and prediction model creation device

The present invention applies control to lessen the impact of process values. A control device (3) comprises: a prediction unit (31) that predicts a predicted value of a control quantity at a control time on the basis of a plurality of process values at an incinerator facility (100) that impact the control quantity; and a control unit (32) that calculates, on the basis of the predicted value, an input value indicating the magnitude of an input to be given to an object of control for controlling the control quantity, and controls the control quantity on the basis of the input value.