Control device of internal combustion engine

A control device of an internal combustion engine, comprising a controlled object for controlling a predetermined control amount, wherein the device calculates a control signal to be supplied to the controlled object for controlling the controlled amount to a target controlled amount which is a target value of the controlled amount and then, when a history of a change of the controlled amount does not correspond to a predetermined history, the device supplies the calculated control signal to the controlled object and on the other hand, when the history of the change of the controlled amount corresponds to the predetermined history, the device corrects the calculated control signal and then, supplies the corrected control signal to the controlled object,

• wherein the controlled object has a hysteresis in its activation,
• wherein a hysteresis model constructed on the basis of the Prisach distribution function is prepared as a model relating to the controlled object for calculating a correction coefficient for correcting the control signal supplied to the controlled object such that the hysteresis of the controlled object decreases,
• wherein the correction of the control signal calculated when the history of the change of the controlled amount corresponds to the predetermined history is accomplished by correcting the calculated control signal by the correction coefficient calculated by the hysteresis model, and
• wherein a model parameter of the hysteresis model is identified on the basis of the change amount of the activation condition of the controlled object during the change of the activation condition of the controlled object and then, the model parameter of the hysteresis model is corrected on the basis of the identified model parameter.