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In thesis thesis, a robust dynamical controller design algorithm for single-input single-output(SISO) nonlinear systems with high-order and unmatched uncertainties is provided. For many practical systems, high-order and unmatched uncertainties are common in control pranctice. Further, sometimes upper boundsof the uncertainties may not be easily obtained because of the comlpexity ofstructure of the uncertainties. Therefore the problem of controlling such systems becomes more complex, more difficult and more practical. We will propose a new method to combine the skill of the skill of dynamic sliding modewith extensive adaptation laws to deal with the problem of high-order and unmatched uncertainties without any knowledge of the upper bounds of the uncertainties. Some examples and simulation results are provided to illustratethe versatility and performance of the proposed method. Finally, the suggesedcontroller is applied to the controlling of the Robot with Flexible Foint.Simulation results indicate its efficiency.
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