Abstract
The paper focuses on control analysis and tuning of an already installed temperature control system in a manufacturing plant. The dynamics of the investigated heating ventilation and air conditioning system are inherently nonlinear throughout the operational region. Therefore, it is challenging to tune the adopted proportional-integral controller. For this reason, a nonlinear temperature model, whose structure is predetermined based on simplified first principles assumptions, is derived. The corresponding parameters are estimated based on measured data using identification techniques. The obtained temperature model is used for off-line control analysis and subsequent control tuning.
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