I Action - Action

...The function in which the deviation between the process variable and the target value is the input and the change in the manipulated variable is the output is called the control action, and indicates the characteristics of the controller. The action of changing the manipulated variable in proportion to the magnitude of the deviation is called proportional action (abbreviated as P action), and when the rate of change of the manipulated variable is made proportional to the deviation, it is called integral action (abbreviated as I action). The latter is because the change in the manipulated variable is proportional to the time integral of the deviation. ...

*Some of the terminology explanations that refer to "I Action" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…プロセス変数と目標値との間の偏差を入力とし，操作量の変化を出力としたときの関数を制御動作と呼び，調節計の特性を示す。　偏差の大小に比例して操作量を変える動作を比例動作(略してP動作)と呼び，操作量の変化速度を偏差に比例させる場合は積分動作(略してI動作)と呼ぶ。後者は操作量の変化値が偏差の時間積分に比例するからである。…

※「Ｉ 動作」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報