Application of H/sub /spl infin// compensator to a first-order lag plus deadtime system with parameter variations

This paper concerns a design method of an H/sub /spl infin// compensator which achieves robust stability as well as adequate disturbance rejection and reference tracking performance. A practical and systematic design method for the H/sub /spl infin// compensator is proposed. This paper demonstrates a practical applicability of the H/sub /spl infin// compensator to a typical plant in process industries compared with the control performance obtained by the robust PID controller.