Plant control system

A plant control system comprising:

• a target value calculating part configured to calculate a target value of a control output of a plant based on one or more of predetermined parameters of the plant;
• a target value correcting part configured to correct the target value in a direction suppressing overshoot of the control output so as to calculate a corrected target value;
• and
• a feedback controller configured to determine a control input of the plant so that the control output approaches the corrected target value,
• wherein the target value correcting part is configured to, when making the control output change to the target value,
• set the corrected target value so that an amount of correction of the target value becomes equal to or less than a predetermined value,
• then change the corrected target value so that the amount of correction of the target value becomes larger than the predetermined value, and
• then change the corrected target value so that the amount of correction of the target value becomes equal to or less than the predetermined value before the control output reaches the target value.