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Lookup NU author(s): Dr Khalid Abidi,
Hang Jian Soo,
Emeritus Professor Ian Postlethwaite
This is the authors' accepted manuscript of an article that has been published in its final definitive form by IET, 2020.
For re-use rights please refer to the publisher's terms and conditions.
This paper proposes a discrete-time adaptive control approach for uncertain single-input and single-output (SISO) linear time-invariant sampled-data systems with uncertain, constant input time delay that has a known upper-bound, without explicitly estimating the time delay. To cope with the unknown time delay a reduction approach similar to that proposed by Artstein in 1982 is used which results in a delay-free system that simplifies the control law design. In addition, the proposed control approach is capable of coping with bounded exogenous disturbances. A rigorous stability analysis shows that the proposed control approach drives the system output to a bound around the reference signal asymptotically, in the presence of an exogenous disturbance. Moreover, simulation results are shown to verify the approach.
Author(s): Abidi K, Soo HJ, Postlethwaite I
Publication type: Article
Publication status: Published
Journal: IET Control Theory & Applications
Print publication date: 03/09/2020
Online publication date: 17/04/2020
Acceptance date: 16/04/2020
Date deposited: 20/04/2020
ISSN (print): 1751-8644
ISSN (electronic): 1751-8652
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