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COMPARISON OF ANALYSIS METHODS FOR DISCRETIZED NON-LINEAR CONTROL LAWS WITH SMALL CONTROL DELAYS
Guido Herrmann, Sarah K. Spurgeon, Christopher Edwards
Control Systems Research Group, University of Leicester, LEI 7RH,
U.K., Tel.:+44-116-252 2531, Fax.:+44-116-252 2619,
gh17@sun.engg.le.ac.uk, eon@le.ac.uk, ce14@le.ac.uk
This paper considers two different approaches for the analysis of discretized nonlinear control laws subject to small computational delays. Emphasis is given to the problem of robustness analysis for the discretized control. Hsu and Sastry (1987) provided a concept for which an explicit formulae is derived here and a modification is suggested allowing robust closed loop analysis in contrast to the initial approach.
Keywords: controller discretization, robust nonlinear control, Lyapunov analysis
Session slot T-We-A21: Posters of Nonlinear Systems/Area code 2c : Non-linear Systems
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