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Erschienen in:
2010 | OriginalPaper | Buchkapitel
IMC Based PID Controller Tuning for Unstable SOPDT Processes
verfasst von : V. K. Singh, P. K. Padhy, S. K. Jain
Erschienen in: Power Electronics and Instrumentation Engineering
Verlag: Springer Berlin Heidelberg
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In this paper, PID tuning formulas are derived for unstable second order plus dead time (SOPDT) processes based on IMC principle. To achieve smooth output response, even in the presence of measurement noise, a first order low pass filter is inserted in the process output. Second order low pass filter used in this design reduces the effect of process-model mismatch and thus improves the performance. Examples from previous works are included for comparison, and results confirm the improvement in the disturbance rejection.