Real Time Implementation of Fractional Order Controller (PI λ ) in an Air Flow Temperature System
1K.Vaithiyanathan, Associate Prof., Department of Chemical Engg., Annamalai University, Annamalai Nagar (Tamil Nadu), India.
2Dr.P.K.Bhaba, Prof., Department of Chemical Engg., Annamalai University, Annamalai Nagar (Tamil Nadu), India.
Manuscript received on 21 January 2013 | Revised Manuscript received on 28 January 2013 | Manuscript published on 30 January 2013 | PP: 96-100 | Volume-1 Issue-6, January 2013 | Retrieval Number: F0440021613/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A fractional order Proportional-Integral controller ( PIλ ) for Air Flow Temperature System (AFTS) is designed and implemented in real time . Controller parameters KP & KI are derived from the Fractional Order Characteristic Polynomial (FOCP) in terms of frequency ω and fractional order λ .The global stability region in KP – KI plane is constructed for each λ . By optimization techniques, K P average, KIaverage and corresponding λ are identified. The real time implementation of PIλ controller in AFTS is done. The PIλ controller performances such as ISE and IAE are analyzed. A comparison with other conventional based control technique is made and the results reveal the effectiveness and validity of the proposed methodology. PIλ controller outperforms the conventional PI controllers. The load disturbance studies is also carried out and justifies the supremacy of PIλ controller.
Keywords: Fractional Order Proportional-Integral controller (PIλ ), AFTS, Global stability region.
Scope of the Article: Ventilation and Indoor Air Quality