Pak Se Yang, a researcher at Science Engineering Institute, reported a paper “Data-driven Robust Controller Design by Geometric Constraints in Frequency-Domain” in SCI magazine "International Journal of Dynamics and Control".
In the paper, he found that the representation of the performance factor of the Robust controller with geometric limit in frequency domain has a drawback of disagreement between the control ability and design characteristics due to the strict assumption and large error, and proposed a new method to enhance the control ability by improving geometric limit.
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