LPV Modeling and Control of Semi-active Dampers in Automotive Systems

Chapter

Abstract

The aim of this chapter is to emphasize the interest of the LPV methodology for suspension modeling and control. Indeed, the main features of a semi-active automotive suspensions are:
  • The damper can only dissipate energy.

  • The damper has a nonlinear behavior which is important to account for in the control design step.

New methodologies have been recently designed to separately cope with these constraints (Do AL et al., An LPV control approach for semi-active suspension control with actuator constraints, 2010; Poussot-Vassal et al., Contr Eng Pract 16(12):1519–1534, 2008; Savaresi et al., Semi-active suspension control for vehicles, 2010). In this study, recent developments are presented to:
  • First, develop an LPV model for an automotive suspension system starting from a nonlinear semi-active damper model.

  • Second, using an original LPV representation of the dissipativity of the semi-active damper, develop an ad hoc H LPV controller.

The whole LPV model is used to design a polytopic H controller for an automotive suspension system equipped with a Magneto-Rheological semi-active damper. This controller aims at improving ride comfort and/or road holding, depending on the required specifications. Some simulation results are given on realistic vehicle and damper models (whose validation on real data has been performed), allowing to show the efficiency of the approach.

Keywords

Attenuation 

Notes

Acknowledgments

The authors would like to thank the co-authors of the referenced papers, specially Jorge de Jesus Lozoya-Santos, Ricardo Ambrocio Ramirez-Mendoza, Ruben Morales-Menendez (TEC Monterrey, Mexico), who have worked with us on the modeling and control of MR dampers; Sergio Savaresi, Cristiano Spelta, and Diego Delvecchio (Politecnico di Milano, Italy) for the discussions on the Mixed SH-ADD control.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.GIPSA-Lab, Control Systems DepartmentCNRS-Grenoble INP, ENSE3St Martin d’Hères cedexFrance

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