Han Ho Choi

TL;DR: This work considers the feedback stabilization of uncertain dynamic systems with time-varying delays in both states and controls and extends the so-called Riccati-equation approach to include those systems.

TL;DR: This work designs observer-based feedback control laws that guarantee the asymptotic stability if the closed-loop control system and reduce the effect of the disturbance input on the controlled output to a prescribed level.

TL;DR: In this paper, an output feedback H∞ control design method for linear time-delay systems based on the linear-matrix-inequality (LMI) approach is developed.

TL;DR: In this paper, a memoryless H∞ control design method for linear time-invariant systems that have no parametric uncertainty but delay in the state and control is presented. But it does not consider the effect of the disturbance input on the controlled output.

TL;DR: Using the Riccati-equation-based approach, observer-based feedback control laws are designed, which guarantee the quadratic stability of the closed-loop control system and reduce the effect of the disturbance input on the controlled output to a prescribed level.