Parameterization of all controllers for 4-block H<sup>∞</sup> control problems with infinite and finite jω-axis zeros

Anderson, BrianXin, XinMita, Tsutomu2026-01-012026-01-01078034530497807803453000743-1619ORCID:/0000-0002-1493-4774/work/174739532https://hdl.handle.net/1885/733801412A parameterization is presented of all solutions to the 4-block H ∞ control problem with infinite and finite jw-axis zeros. The parameterization is given in terms of linear fractional transformation (LFT) on stable transfer function matrices with gain less than 1 which are free apart from satisfying certain interpolation conditions.enParameterization of all controllers for 4-block H<sup>∞</sup> control problems with infinite and finite jω-axis zeros199810.1109/ACC.1998.70736784881350376