Tuning of PID controller using gain/phase margin and immune algorithm

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 an...

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Bibliographic Details
Main Author: Dong Hwa Kim
Format: Conference Proceeding
Language:English
Subjects:
Automatic control
Industrial control
Optimal control
PD control
Pi control
Process control
Proportional control
Robust control
Three-term control
Tuning
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Summary: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.
DOI:10.1109/SMCIA.2005.1466950