Robust control design for time-delay systems using non-causal uncertainty blocks


2009 10th European Control Conference, ECC 2009, Budapest, Hungary, 23 - 26 August 2009, pp.567-572 identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.23919/ecc.2009.7074463
  • City: Budapest
  • Country: Hungary
  • Page Numbers: pp.567-572
  • Anadolu University Affiliated: Yes


© 2009 EUCA.Robust controller design problem for time-delay systems is considered. Both the time-delays, which may appear at the inputs and/or outputs of the plant, and the finite-dimensional part of the plant are assumed to be subject to uncertainties. A recent result, which utilizes non-causal blocks to represent the uncertainties in the time-delays, is extended to the present case. A number of different representations are considered for the uncertainties in the finite-dimensional part of the plant. For each of these representations, it is shown that the time-advances in the uncertainty blocks have a special form. This special form with the newly introduced strong small-gain conditions allow the design of an H∞-optimal controller for the present problem.