@article{(Open Science Index):https://publications.waset.org/pdf/298,
	  title     = {Periodic Control of a Reverse Osmosis Water Desalination Unit},
	  author    = {Ali Emad},
	  country	= {},
	  institution	= {},
	  abstract     = {Enhancement of the performance of a reverse osmosis
(RO) unit through periodic control is studied. The periodic control
manipulates the feed pressure and flow rate of the RO unit. To ensure
the periodic behavior of the inputs, the manipulated variables (MV)
are transformed into the form of sinusoidal functions. In this case, the
amplitude and period of the sinusoidal functions become the
surrogate MV and are thus regulated via nonlinear model predictive
control algorithm. The simulation results indicated that the control
system can generate cyclic inputs necessary to enhance the closedloop
performance in the sense of increasing the permeate production
and lowering the salt concentration. The proposed control system can
attain its objective with arbitrary set point for the controlled outputs.
Successful results were also obtained in the presence of modeling
	    journal   = {International Journal of Chemical and Molecular Engineering},
	  volume    = {7},
	  number    = {3},
	  year      = {2013},
	  pages     = {138 - 142},
	  ee        = {https://publications.waset.org/pdf/298},
	  url   	= {https://publications.waset.org/vol/75},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 75, 2013},