A new self-tuned PID-type fuzzy controller as a combination of two-term controllers |
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Authors: | Bhattacharya S Chatterjee A Munshi S |
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Affiliation: | Electrical Eng. Dept., Jadavpur University, Calcutta, West Bengal, PIN-700 032, India. |
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Abstract: | The present paper is a venture into the domain of proportional-integral-derivative (PID) -type adaptive fuzzy logic controllers (FLC's) and proposes a new algorithm which is realized by a self-tuned PI-type FLC (in velocity form) in parallel with a self-tuned PD-type FLC (in position form). Each of these PI/PD controllers implements a supervisory static FLC for adaptive online modification of the output scaling factor (SF) of a static PI/PD FLC. The proposed scheme is developed with a view to having a PID-type FLC with an architecture, simple enough for practical implementation, which at the same time has substantially satisfactory performance for a wide class of processes. Simulation studies on a range of processes reveal that the proposed controller has better performance compared to many of its existing counterparts. |
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Keywords: | PID-type fuzzy controllers Two-term controllers Velocity and position form of realizations |
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