Title :
Tuning of PID controller using gain/phase margin and immune algorithm
Author_Institution :
Dept. of Instrum. & Control Eng., Hanbat Nat. Univ., Deajeon, South Korea
Abstract :
Up to the present time, PID controller has been widely used to control industrial process loops because of its implementational advantages. However, it is very difficult to achieve an optimal PID gain with no experience, since the parameters of the PID controller has to be manually tuned by trial and error. This paper focuses on tuning of the PID controller using gain/phase margin and immune algorithm. After deciding optimal gain/phase margin specifications for the given process, the gains of PID controller using fitness value of immune algorithm depending on error between optimal gain/phase margin and the gain/phase margin obtained by tuning is tuned for the required response. To improve this suggested scheme, simulation results are compared with FNN based responses and illustrate more effectiveness.
Keywords :
gain control; intelligent control; optimal control; phase control; process control; robust control; three-term control; tuning; FNN based response; PID controller tuning; gain margin; immune algorithm fitness value; industrial process loop control; phase margin; Automatic control; Industrial control; Optimal control; PD control; Pi control; Process control; Proportional control; Robust control; Three-term control; Tuning;
Conference_Titel :
Soft Computing in Industrial Applications, 2005. SMCia/05. Proceedings of the 2005 IEEE Mid-Summer Workshop on
Print_ISBN :
0-7803-8942-5
DOI :
10.1109/SMCIA.2005.1466950