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Study of the nonlinear control techniques for single acting VGT pneumatic actuator

Laghrouche, Salah; Mehmood, Adeel; El Bagdouri, Muhammad


Salah Laghrouche

Muhammad El Bagdouri


In this paper, we have developed a detailed mathematical model of a pneumatic actuator for a Variable Geometry Turbocharger (VGT) equipped with an Electro-pneumatic Pressure Converter (EPC). This model may require complex calculations for control purpose; therefore the dynamics of the EPC have been neglected and replaced by a static gain. These models incorporate friction and aerodynamic force related effects by using adaptive LuGre model. To compensate for parametric uncertainties, two single-input single-output nonlinear position control laws are designed using the second order sliding mode (SMC) and backstepping control. A comparative study with experiments shows the effectiveness of the proposed controllers. Copyright © 2012 Inderscience Enterprises Ltd.


Laghrouche, S., Mehmood, A., & El Bagdouri, M. (2012). Study of the nonlinear control techniques for single acting VGT pneumatic actuator. International Journal of Vehicle Design, 60(3-4), 264-285.

Journal Article Type Article
Acceptance Date Aug 18, 2011
Online Publication Date Apr 23, 2013
Publication Date Jan 1, 2012
Deposit Date Jul 4, 2024
Journal International Journal of Vehicle Design
Print ISSN 0143-3369
Publisher Inderscience
Peer Reviewed Peer Reviewed
Volume 60
Issue 3-4
Pages 264-285
Keywords Mathematical modelling; Adaptive LuGre model; Sliding mode control; SMC; Twisting algorithm; Backstepping control; Nonlinear control; VGT pneumatic actuators; Variable geometry turbocharger; Electropneumatic pressure converter; EPC; Friction; Aerodynamics
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