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A self-tuning PI controller is developed for a single-input/single-output 1st order lag + dead time process, which accommodates process perturbations and makes the controller maintenance work easier. The controller is based on IMC (Internal Model Control) PI tuning and self-tunes its proportional gain to maintain the performance even when the process undergoes large perturbations with its steady state...
IMC (Internal Model Control) based PI control with adaptive capability is developed for process systems. The integral time is fixed and the proportional gain is adapted based on the noise response of the closed loop. Signal power around the phase crossover frequency is observed and the proportional gain is adjusted so that the signal power becomes a specified value. Application of the adaptive controller...
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