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This paper deals with the design of an observer-based extremum seeking controller for a bioprocess model. Parameters and state variables of the bioreactor are reconstructed by considering a high order sliding mode observer (HOSMO). The observer is coupled with a nonlinear controller whose design is based on feedback linearization, resulting in an extremum seeking controller for the optimization of...
The performance improvement of hydraulic simulator is effected by dynamic nonlinear friction. A nonlinear adaptive frication compensation method based on LuGre friction model is proposed to acquire good low-speed performance of hydraulic simulator after analyzing dynamic friction of hydraulic simulator and building LuGre friction model of hydraulic simulator. Dual nonlinear observers are constructed...
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