Stable H? flow controller design

IFAC - Tech. Comm. Linear Control Syst.;IFAC - Tech. Comm. Nonlinear Syst.;IFAC - Tech. Comm. Robust Control;IFAC - Tech. Comm. Control Des.;IFAC - Tech. Comm. Networked Syst.
8th IFAC Workshop on Time-Delay Systems, TDS'09 -- 1 September 2009 through 3 September 2009 -- Sinaia -- 85994
Stable H? controller design, for a flow control problem which involves multiple time-delays, is considered. An algorithm, which produces a stable controller apart from the integral action, is developed utilizing a rational approximation of finite-impulse response filters. An example is also presented to show the performance of the stable H? flow controller obtained by the proposed approach. This controller robustly stabilizes the system and achieves all design requirements, whereas the H ?-optimal controller, which is unstable, fails to achieve the same requirements. Copyright © IFAC 2009.