Automatic Tuning of PID Regulators for Type-I Control Loops

  • Konstantinos G. PapadopoulosEmail author


A systematic automatic tuning method for PID-type controllers in Single Input–Single Output processes is proposed. The method is inspired from the Magnitude Optimum design criterion and (1) considers the existence of a poor process model and (2) requires only access to the output of the process and not to its states (3) requires an open-loop experiment on the plant itself for initializing the algorithm. The application of the Magnitude Optimum criterion for tuning the PID controller in the case of a known single input–single output linear process model and regardless of its complexity shows that the step response of the control loop exhibits a certain performance in terms of overshoot (4.4 %), settling and rise time as it was already shown in Chap.  3 and Sect. 3.2. The proposed method exploits this feature and tunes the PID controller parameters, so that the aforementioned performance is achieved. Since the proposed control law is not restricted to specific plants regarding their complexity, a performance comparison in Sects. 7.3 and 7.4.3 discusses the closed-loop frequency response when the controller is tuned optimally according to Sect.  3.3 and when the controller is tuned automatically according to Sect. 7.2.


Step Response Automatic Tuning Conjugate Complex Polis Dominant Time Constant Automatic Tuning Method 
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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.ATDDABB IndustriesTurgiSwitzerland

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