This paper deals with the H ∞  state-feedback control synthesis for time-delay linear systems. We extend the use of the finite order LTI system, called comparison system, to design a controller dependent not only on the state at the present time and maximum delay, but also on an arbitrary number of values between those. Therefore, we are able to increase the maximum stable delay without increasing the buffer used to implement the controller. All methods presented here consider time-delay systems control design with classical numeric routines based on Riccati equations and theory. An illustrative example is presented.
['C. B. Cardeliquio', 'M. Souza', 'Rubens H. Korogui', 'André R. Fioravanti']
Stability analysis and state-feedback control design for time-delay systems