Second-Order SM Approach to SISO Time-Delay System Output Tracking
Gang Liu
Zinober, A.
Shtessel, Y.B.
Dept. of Appl. Math., Univ. of Sheffield, Sheffield, UK;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Sept. 2009
Volume: 56,
Issue: 9
On page(s): 3638-3645
ISSN: 0278-0046
INSPEC Accession Number: 10816633
Digital Object Identifier: 10.1109/TIE.2009.2017089
First Published: 2009-03-16
Current Version Published: 2009-08-11
Abstract
A fully linearizable single-input-single-output relative-degree n system with an output time delay is considered in this paper. Using the approach of Pade approximation, system center approach, and second-order sliding-mode (SM) control, we have obtained good output tracking results. The Smith predictor is used to compensate the difference between the actual delayed output and its approximation. A second-order supertwisting SM observer observes the disturbance in the plant. A nonlinear example is studied to show the effect of this methodology.
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