\input zb-basic \input zb-ioport \iteman{io-port 03889364} \itemau{Capitani, G.; Penati, M.E.; Tibaldi, M.} \itemti{Numerical synthesis of optimum reduced-order dynamic regulators.} \itemso{Real time control of large scale systems, Proc. 1st Eur. Workshop, Patras/Greece 1984, Lect. Notes Control Inf. Sci. 67, 257-268 (1985).} \itemab Summary: [For the entire collection see Zbl 0553.00017.] This work presents a recursive algorithm which gives a suitable starting reduced-order regulator which stabilizes the over-all system. This procedure applies a model-reduction approach to a full-order regulator built-up by the Kalman optimum observer and the optimum algebraic regulator. A periodical check of the suitability of the chosen structure is introduced. \itemrv{~} \itemcc{} \itemut{recursive algorithm; reduced-order regulator; model-reduction; full-order regulator; Kalman optimum observer} \itemli{} \end