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Title: Nonlinear integral-type sliding surface for both matched and unmatched uncertain systems
Authors: Cao, W.-J.
Xu, J.-X. 
Issue Date: 2001
Source: Cao, W.-J.,Xu, J.-X. (2001). Nonlinear integral-type sliding surface for both matched and unmatched uncertain systems. Proceedings of the American Control Conference 6 : 4369-4374. ScholarBank@NUS Repository.
Abstract: This paper presents a new nonlinear integral-type sliding surface which incorporates a virtual nonlinear nominal control to achieve prescribed specifications. First, the plant with matched uncertainties is considered. The resultant closed-loop system during ideal sliding mode behaves exactly like the nominal plant under the nonlinear nominal control, which completely nullifies the matched uncertainties and consequently satisfies the prescribed specifications. Second, the stability analysis of the proposed sliding mode for the systems with unmatched uncertainties is performed to exploit the stability margin. Application examples to realize eigenvalue assignment and linear quadratic regulator optimal control with respect to the linear part of nominal plant are studied. Numerical results demonstrate the validity of the proposed scheme.
Source Title: Proceedings of the American Control Conference
ISSN: 07431619
Appears in Collections:Staff Publications

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