Abstract
Various generalizations and refinements are proposed for a well-known result on robust matrix sign-definiteness, which is extensively exploited in quadratic stability, design of robustly quadratically stabilizing controllers, robust LQR-problem, etc. The main emphasis is put on formulating the results in terms of linear matrix inequalities.
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Original Russian Text © M.V. Khlebnikov, P.S. Shcherbakov, 2008, published in Avtomatika i Telemekhanika, 2008, No. 11, pp. 125–139.
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Khlebnikov, M.V., Shcherbakov, P.S. Petersen’s lemma on matrix uncertainty and its generalizations. Autom Remote Control 69, 1932–1945 (2008). https://doi.org/10.1134/S000511790811009X
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DOI: https://doi.org/10.1134/S000511790811009X