Sliding mode control of linearly actuated nonlinear systems

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Date

2009

Author

Durmaz, Burak

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This study covers the sliding mode control design for a class of nonlinear systems, where the control input affects the state of the system linearly as described by (d/dt)x=A(x)x+B(x)u+d(x). The main streamline of the study is the sliding surface design for the system. Since there is no systematic way of designing sliding surfaces for nonlinear systems, a moving sliding surface is designed such that its parameters are determined in an adaptive manner to cope with the nonlinearities of the system. This adaptive manner includes only the automatic adaptation of the sliding surface by determining its parameters by means of solving the State Dependent Riccati Equations (SDRE) online during the control process. The two methods developed in this study: SDRE combined sliding control and the pure SDRE with bias terms are applied to a longitudinal model of a generic hypersonic air vehicle to compare the results.

Subject Keywords

Mechanical engineering., Automatic machinery.

URI

http://etd.lib.metu.edu.tr/upload/12610666/index.pdf
https://hdl.handle.net/11511/18545

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

B. Durmaz, “Sliding mode control of linearly actuated nonlinear systems,” M.S. - Master of Science, Middle East Technical University, 2009.