What is it about?
A variable structure model-reference adaptive control (VS-MRAC) of impedances and admittances (driving-point (DP) functions) is proposed. Simulation results illustrate the performance and robustness of the VS-MRAC.
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Why is it important?
Only voltage and current measurements are required to implement the controllers. The inclusion of a prefilter in the reference model allows the synthesis of quite general DP functions, even with nonminimum phase zeros and unstable poles. It is shown that the stability of the closed-loop system depends only on the source DP function and the chosen reference model. The VS-MRAC guarantees global exponential stability properties, robustness to parameter uncertainties, disturbances, and unmodelled dynamics.
Perspectives
This concept can be applied to power electronics, electric power systems, such as active filters, and ocean wave energy converters.
Professor José Paulo Vilela Soares Cunha
Universidade do Estado do Rio de Janeiro
The algorithm requires only output feedback. This is an outstanding feature compared to previous conventional VSC designs which are based on full-sate feedback.
Ramon Costa
Federal University of Rio de Janeiro
Read the Original
This page is a summary of: Model-reference impedance and admittance control of linear systems, International Journal of Adaptive Control and Signal Processing, January 2016, Wiley,
DOI: 10.1002/acs.2661.
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