136505-7474-IJMME-IJENS © October 2013 IJENS I J E N S Abstract –The objective of this study is to investigate the application of various techniques of adaptive control in industrial processes with the temperature maintained between 2°C to 8°C for the thermoelectric refrigerator (TER) system for vaccine chamber. The system is nonlinear and exhibits varying model parameters, hence the object of the study is to investigate control strategies that are not based on detailed advance plant knowledge but allow adaptation of the controller changing the system dynamics. The mathematical model has been identified for the TER system using input-output real-time system. The black box modelling approach is appropriately chosen since this is needed for the implementation of adaptive control. The TER system has been identified using Recursive Least Squares (RLS) method. A second order model is use to represent the system. The validation procedures show that the derived model is indeed a good enough representation of the TER system. Adaptive self-tuning control approaches of pole assignment with several variations have been considered.
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