Tracking Time Adjustment In Back Calculation Anti-Windup Scheme

This study deals with the tuning of the tracking time parameter in the back calculation anti-windup scheme. When the controller output saturates, the back calculation method does not reset the integral action instantaneously but rather dynamically with a time constant Tt. Here, a method is presented to adjust the parameter Tt in such a way that the process output acquires a ‘good’ performance. The proposed method exploits the advantageous sides of ‘big’ and ‘small’ values of Tt and the value of the parameter Tt is determined based on the parameters of the preferred process model. In addition to this approach, the optimal value of this tracking time parameter is searched using a basic genetic search algorithm with Integral Time Absolute Error (ITAE) criterion. Finally, the simulation results of back calculation algorithm that uses Tt adjusted by the proposed method and Tt determined through a genetic search algorithm are compared with each other.

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