DESIGN AND CONTROL OF HYDRAULIC ACTUATORS: SIMULATIONS AND EXPERIMENTAL RESULTS
Ana Lúcia D. Franco*, Edson R. De Pieri*, Eugênio B. Castelan* and Raul Guenther**
* Departamento de Automaç ão e Sistemas
** Departamento de Engenharia Mecânica Universidade Federal de Santa Catarina 88040-900 Florianópolis, SC, Brazil E-mails: analucia@das.ufsc.br, edson@das.ufsc.br, eugenio@das.ufsc.br, guenther@emc.ufsc.br
In this paper the problem of experimental control of hydraulic actuators is considered. Experimental results of a backstepping implementation are analyzed in the context of practical difficulties, mainly the measurements of the acceleration and pressure difference. A two degree-of-freedom controller is proposed to circumvent these difficulties in a framework that takes into account the measurement and the robustness problems. Simulations results illustrate the main features of the backstepping and the two degree-of-freedom controllers when applied on a hydraulic actuator.
Keywords: Hydraulic Actuators, Nonlinear Control, Linear Control, Robustness, Disturbance Rejection
Session slot T-Tu-A16: Controller Design Studies (Aeronautics and Hydraulics)/Area code 2a : Control Design

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