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arXiv · 2007.01942

A model-free tuning method for proportional-multi-resonant controllers

Charles Lorenzini·Luís Fernando Alves Pereira·Alexandre Sanfelice Bazanella·Gustavo R. Gonçalves da Silva
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Abstract

Resonant controllers are widely used in applications involving reference tracking and disturbance rejection of periodic signals. The controller design is typically performed by a trial-and-error approach or by means of time and resource-consuming analytic methods that require an accurate plant model, intricated mathematics and sophisticated tools. In this paper, we propose an easily implementable, model-free method for tuning a proportional-multi-resonant controller applicable to general linear time-invariant causal plants. Just like the Ziegler-Nichols methods, the proposed methodology consist in identifying one specific point of the plant's frequency response -- which is easily obtained in a relay with adjustable phase experiment -- and then designing the controller with simple tuning formulas and tables. The method is analyzed in detail for three examples, showing its practical appeal and wide applicability.

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Charles Lorenzini, Luís Fernando Alves Pereira, Alexandre Sanfelice Bazanella, Gustavo R. Gonçalves da Silva. 2020-07-03. A model-free tuning method for proportional-multi-resonant controllers. https://arxiv.org/abs/2007.01942

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