Перегляд Вісник НТУУ «КПІ ім. Ігоря Сікорського». Серія «Хімічна інженерія, екологія та ресурсозбереження»: збірник наукових праць, № 4 (21) за Автор "Putiatin, R. O."
(КПІ ім. Ігоря Сікорського, 2022) Zhuchenko, A. I.; Putiatin, R. O.
Pole placement is the only PID-tuning technic that allows one to obtain a control system with desired, and, moreover,
highly predictable performance and control quality. Number of controller tuning parameters is equal to number of
poles closed-loop poles it can precicely place, so that PID-controller can place exactly three poles, and PI- can place
only two. For this reason PI-controller is best used with first-order processes (second-order closed loop system), and
PID-controller with second-orded ones (third-order closed loop system). However, many processes have higher order
than two, and still are controlled with PID-controllers. To tune it using pole placement techniques, it is necessary to
consider only dominant poles, which affect performance of the system to the greatest extent. First, it is necessary to
study a PI-controller with a second-order process, which is the most basic case. Tuning is performed using global
optimization methods to fit dominant poles of a tuned system to dominant poles of a reference system.