Auto-tuning and fuzzy PID temperature controllers for hollow metal block

Authors:
Shiuh-Jer Huang;Yi-Ho Lo
Affiliations:
Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan;Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
Venue:
CIMMACS'08 Proceedings of the 7th WSEAS international conference on Computational intelligence, man-machine systems and cybernetics
Year:
2008

Citing 4
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Abstract

Temperature is an important production control parameter in chemical and semiconductor industry. Generally, the temperature control system has nonlinear time-delay, slow response speed and one-way control input characteristics. It is difficult to accurately estimate the dynamic model and design a general purpose temperature controller for achieving good control performance. Here model-free auto-tuning and fuzzy PID control strategies are employed to design a general temperature controller for different plants. The experimental results show that these control schemes can obtain reasonable control performance. The steady state error of the step input response is less than 0.2 °C with small overshoot. The time response behavior is better than that of the model-based IMC-PID due to the modeling error.