Birs, Isabela Roxana (Technical University of Cluj-Napoca), Rizel, Catalina (Technical University of Cluj-Napoca), Mihai, Marcian David (Technical University of Cluj-Napoca), Muresan, Cristina Ioana (Technical University of Cluj-Napoca), De Keyser, Robin M.C. (Ghent University)

Validation of a Short Relay Test PID Autotuner on a Nonlinear Process with Stochastic Disturbances

Scheduled for presentation during the Regular Session "Time-delay systems" (WeBE), Wednesday, June 11, 2025, 15:00−15:20, Room D

33rd Mediterranean Conference on Control and Automation, June 10-13, 2025, Tangier, Morocco

This information is tentative and subject to change. Compiled on May 9, 2025

Abstract

This paper presents a relay based procedure for autotuning Proportional-Integral-Derivative (PID) controllers based on a short relay test, aimed at improving the efficiency and accuracy of PID tuning. Unlike traditional approaches, the proposed autotuner requires a single, brief experimental test performed for the duration of 2 times the settling time of the process. The goal is to obtain the process frequency response value and it's derivative at a certain frequency of interest. Then, any method can be utilized to tune the PID parameters. A highly nonlinear process featuring stochastic disturbances is chosen as the experimental case study of the proposed approach, consisting of vertical take-off and landing platform. The obtained results showcase the effectiveness of the proposed method in handling complex, non-linear systems. Results demonstrate that the novel autotuning approach proves easy to implement, making it highly suitable for real-world industrial applications and is immune to stochastic disturbances.