Model Based Tuning of a Non Linear Spherical Tank Process with Time Delay |
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Authors: | P Madhavasarma |
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Affiliation: | Department of Electronics and Instrumentation Engineering , SASTRA University , Thanjavur, India |
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Abstract: | Abstract A 40 liter spherical tank with varying time delay was subjected to open loop analysis using a step response technique with sodium chloride solution as tracer. The experimental data was adequately represented by a first order plus dead time (FOPDT) model with an error of less than five percent. These model parameters were used to generate Smith Predictor controller, IMC controller, and IMC PID controller using MATLAB. For closed loop control of the process based on rise time, settling time, overshoot, peaktime, decay ratio, and ISE, it was found that the IMCPID controller is better suited for this process. |
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Keywords: | FOPDT IMCPID Smith Predictor Spherical Time delay Tracer |
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