| Title |
Optimal Tuning Strategy for 2-Degree-of-Freedom i-PID Controllers |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.9.1202 |
| Keywords |
i-PID (intelligent PID) ; Two-degree-of-freedom control systems ; Optimal tuning |
| Abstract |
This paper is concerned with the problem of setting controller's parameters when applying the intelligent PID (i-PID), which has recently been proposed and had many successful results, to the two-degree-of-freedom (2DoF) PID controller structure. Generally, the parameter settings of conventional PID controllers are known to be quite difficult and be dependent on the characteristics of the plants. In addition, it is less known how the two 2DoF parameters are set up for the improvement of transient characteristics. Here, we are going to present one of the criteria for parameter setting in the case of using a 2DoF i-PID, by evaluating the error signals to the set-point and disturbance. That is, we first, obtain parameters of i-PID by optimizing the disturbance responses, and then determine two parameters of 2DoF component through optimizing set-point response. The standard values of all parameters are calculated for the 7 types of test batches and rounded up as a table. |