Title :
Sliding mode observer based adaptive control of a VGT single acting pneumatic actuator
Author :
Mehmood, A. ; Laghrouche, S. ; El Bagdouri, M.
Author_Institution :
Univ. of Technol. Belfort-Montbeliard (UTBM), Belfort, France
Abstract :
In this paper, we have considered a novel sliding mode friction observer based control for a servo pneumatic actuator system. The model is obtained to incorporate friction and aerodynamic force related effects, such as hysteresis, using LuGre friction model. A sliding mode observer is proposed to estimate the internal friction state of the LuGre model. In order to compensate for parametric uncertainties and aerodynamic force effects, an adaptive control law for the VGT pneumatic actuator is also designed. The stability of the controller is analyzed with the Lyapunov candidate function. A comparative study with experimental results shows the effectiveness of the proposed controller.
Keywords :
Lyapunov methods; adaptive control; aerodynamics; compressors; control system synthesis; diesel engines; friction; fuel systems; observers; pneumatic actuators; servomechanisms; stability; variable structure systems; LuGre friction model; Lyapunov candidate function; VGT single acting pneumatic actuator; adaptive control; adaptive control law design; aerodynamic force effects; controller stability; hysteresis; internal friction state estimation; parametric uncertainties; servo pneumatic actuator system; sliding mode friction observer based control; variable geometry turbocharger; Adaptation models; Force; Friction; Mathematical model; Observers; Pneumatic actuators; Adaptive LuGre Model; Friction observer; Lyapunov function; Modeling; Sliding mode control;
Conference_Titel :
Variable Structure Systems (VSS), 2012 12th International Workshop on
Conference_Location :
Mumbai, Maharashtra
Print_ISBN :
978-1-4577-2066-6
Electronic_ISBN :
2158-3978
DOI :
10.1109/VSS.2012.6163491
