A method for closed loop automatic tunin
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Tor Steinar Schei
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Article
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1992
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Elsevier Science
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English
โ 345 KB
A simple method for the automatic tuning of PID controllers in closed loop is proposed. A limit cycle is generated through a nonlinear feedback path from the process output to the controller reference signal. The frequency of this oscillation is above the crossover frequency and below the critical f