Tuning of Decoupling Controller by Using Momi Method

A large majority of existing tuning methods for multivariable PI controllers require good process model in order to achieve satisfactory tuning. Modelling and identification of an accurate process model is time consuming and requires extensive experimentation. In this paper, a new parameterisation of the process model based on multiple integration of the process step-response, is proposed. It is shown that the proposed parameterisation can be successfully used for tuning parameters of decoupling controllers. Experiments taken on two process models showed that the proposed method performs better than certain other tuning methods requiring more demanding modelling and identification.