Summary: | 碩士 === 大同大學 === 電機工程研究所 === 89 === In this thesis, two controllers designed for the single-input single-output nonlinear discrete-time with matching perturbations are provided. First, the robust controller is composed of conventional state-feedback controller and univector-control from to deal with uncertainties. The major reason of choosing matching perturbations for uncertainties is to employ the properties of matching conditions. Then univector-control from can skill its utility by means of the reason. Next, for the same system, we provide another controller, sliding mode controller. The property of our proposed controller is that neither chattering phenomenon will occur nor the knowledge of upper bound of perturbations is required. But the perturbations must have bounded. Not like ordinary sliding mode controller, it switches in a small range but not sliding surface. Finally, some examples and simulation results are provided to illustrate the feasible the feasible of the proposed method.
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