Moore, J. B.Anderson, B. D.O.Mingori, D. L.2026-01-022026-01-0200803166700741-1146ORCID:/0000-0002-1493-4774/work/174739905https://hdl.handle.net/1885/733803054Standard linear optimal control theory is generalized using a spectral factorization approach to elucidate some effects of frequency shaped performance indices. The theory discusses robustness results which parallel those of standard optimal control design. Matrix transfer function Riccati equations emerge as a conceptual tool associated with the frequency shaped optimal designs.6en19850021900059