Teorical and experimental investigation of system dynamics in a process control simulator developed with wireless control purpose
Journal Title: Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji - Year 2017, Vol 5, Issue 4
Abstract
System identification is a very important process that affects the success of process control operations. For the system identification, the theoretical studies have been done by using experimental and MATLAB in the wireless process control simulator. First of all, steady state experiments were carried out in wireless liquid level tests. To investigate system dynamics, the liquid level was observed to change with time by step, PRBS and square wave effect on the liquid level valve openning. Therefore, open loop dynamic experiments were carried out to identify system spesifications. In order to determine correlation and to find the suitable model equation between liquid level and liquid level valve, system identification was done for diffrent input signals (step effect, PRBS and vawe square). In the dynamics state experiments, after the system was worked in steady state during 100 minutes when the valve is %10 open, positive and negative effects were given to the liquid level control valve. It was assumed that the system had a first-order dead-time model in the system identification experiments. Output varaible datas obtained from the results of the effect given to the liquid level valve was used for the systen identification . Input and output datas were handled in to the ‘MATLAB System Identification Toolbox’ and then ARIMAX model coefficients (a1, a2, b0, b1, b2,c1 ve c2) were determined.
Authors and Affiliations
İsmail BAYRAM
Keywords
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- EP ID EP485565
- DOI 10.29109/http-gujsc-gazi-edu-tr.369220
- Views 112
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