I have a nonlinear level control system with 2 I/Ps (flow) and 3 O/Ps (tank levels). All the Inputs and outputs are coupled in such a way that they almost equally affect all the 3 outputs i.e the relative gain array matrix has all the elements of nearly same values. How the control is achieved when the each of three outputs has different time varying reference signals (set points).
Hi Roy,
One never can reach "a ""best"" (possible) control strategy" like a shot! The procedure is to try, step by step, to reach a "better control". To try to help you(rself) You / I would need the system's structure, the INputs, the descriptions of the considered NLties as well as data about the discretization needed for each OUTput and thier individual accuracies!
Regards,
F.I.
You could achieved, the required control by using readymade microprocessor kit(with two 8255, ADC and DAC)by needed programing. Refer my papers. After achieving reliability, could go for, needed readymade microcontroller, would be cheaper, reliable and accurate..
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