Abstract:

The problem of robust H_∞ controller design for linear systems with parameter uncertainty residing in a polytopic and timevarying delays in states is considered. A new improved LMI representation of H_∞ performance is presented for the linear systems with timevarying state delay. The state feedback H_∞ controller guarantees not only the quadratic stability of the closedloop system but also the H_∞ norm bound within a γ.

Key words: automatic , control , technology,  , robust , control,  , parameter , dependent,  , statedelayed , system,  , polytopic , uncertainty