Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2014.1570.1575KalaH.AbiramiS.MuthumariS.VenkateshS.1220141414Maintaining humidity at a desired value is of prime importance
in several industries such as textile, food processing and pharmaceutics to
achieve the product quality. In this study a laboratory scale humidity setup
was developed. By introducing step change in inlet flow rate the response in
terms of RH was recorded. From the data, a model for the humidity setup was
identified. The model identified best fitted with first order plus dead time
model. For the identified model, different control strategies such as Ziegler
Nichols based Proportional Integral Controller (ZNPID), Skogestad based Internal
Model Controller (SIMC) and Fuzzy based PID controller (FUZZYPID) were tested
in MATLAB environment. The performance of the controllers based on time domain
specifications like rise time, settling time and overshoot were studied. Among
the developed controllers FUZZYPID outperformed the others.]]>Arbaoui, F., M.L. Saidi, S. Kermiche and H.A. Abbassi,2006Astrom, K.J. and T. Hagglund,2004Hagglund, T. and K.J. Astrom,2004Ballaney, P.L.,2002Coughnwar, D.R. and S.E. Leblanc,1991Enshen, L.,2005Zulfatman and M.F. Rahmat,2009Guo, Y., D. Cao and G. Zheng,2009Dorrah, H.T., A.M. El-Garhy and M.E. El-Shimy,2010Haugen, F.,2010Haugen, F.,2009Jha, N., U. Singh, T.K. Saxena and A. Kapoor,2011Liau, L.C.K. and Y.K. Huang,2008Meenakshipriya, B., K. Saravanan, K. Krishnamurthy and P.K. Bhaba,2012Michels, K.,1997Misir, D., H.A. Malki and G. Chen,1996Nithya, S., A.S. Gour, N. Sivakumaran, T.K. Radhakrishnan, T. Balasubramanian and N. Anantharaman,2008Seborg, D.E., T. Edgar and D.A. Mellichamp,1989Skogestad, S.,2003Sundaresan, K.R. and R.R. Krishnaswamy,1978Venkatesh, S. and S. Sundaram,2012Venkatesh, S. and S. Sundaram,2012Wang, S., N. Li and F. Yang,2012Shaharurrizal, M., B.M.W. Farrah, D. Herman, A. Arunagiri and S. Morris,2002Ziegler, J.G. and N.B. Nichols,1993