Mita, T.Xin, X.Anderson, Brian D.O.2026-01-012026-01-010191-2216ORCID:/0000-0002-1493-4774/work/174739540https://hdl.handle.net/1885/733801510This paper formulates an extended H∞ control problem for generalized plants having unstable weights and gives the complete solution to this problem by introducing a new notion of comprehensive stability. The H∞ servo and filtering problems are re-examined in the light of the extended H∞ control concept.6en199710.1109/CDC.1997.6497190031385264