Geometric tuning of controllers from a data-driven approach
DOI:
https://doi.org/10.61799/2216-0388.1199Keywords:
boost power converter, data-driven control, Experimental bode, stabilizing setAbstract
Background: Tuning PI controllers by conventional methods involves knowing the plant model and applying trial and error techniques. Objective: To adjust the parameters of a PI compensator using a control methodology based on frequency response data. Method: The basis of the presented calculation is the geometrical interpretation for the stability margins of the system, constituting a feasible dynamic specification space. Simulation analysis and laboratory experimental validation are presented for electrical systems involving step-up type DC-DC power electronic converters. Results: The construction of an experimental Bode diagram allowed to eliminate the dependence of the controller parameter calculation on the explicit knowledge of an analytical model of the system. Conclusion: Through numerical simulations and laboratory measurements it was possible to verify the dynamic regulation of the power converter, including saturation restrictions for the establishment of stabilising sets.
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