Patent ID: 8155763

Claim:
An operation control method employed in a control apparatus for controlling a control object by calculating an operation amount comprising an operating signal to the control object to make one of maximization and minimization of an evaluation value calculated from a control amount obtained on the basis of a control deviation defined by deviation of the control amount measured from the control object from a target value of the control object, the operation control method comprising the steps of: establishing a model for simulating a property of the control object; calculating the operation amount to make one of maximization and minimization of an evaluation value on the basis of a control deviation of the model as a target, and applying the operation amount to the control object; calculating an evaluation value based on a control deviation in controlling the control object by the operation amount; and determining an operation amount change width defined by a difference between operation amount of a current step and operation amount to be determined at a next step, based on the deviation of an evaluation value of the control deviation of the control object from an evaluation value of the control deviation of the model.