Nonlinear analysis and control of a variable-geometry suspension system

Balázs Németh, P. Gáspár

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The paper proposes methods for both the analysis and the synthesis of variable-geometry suspension systems. The nonlinear polynomial Sum-of-Squares (SOS) programming method is applied in the analysis and it gives the optimal utilization of the maximum control forces on the tires. Moreover, the construction of the system can be based on the nonlinear analysis. The variable-geometry suspension system affects the wheel camber angle and generates an additional steering angle, thus the coordination of steering and wheel tilting can be handled. An LPV (Linear Parameter-Varying) based control-oriented modeling and control design for lateral vehicle dynamics are also proposed. The novelty of the method is the combination of the LPV-based control design and the SOS-based invariant set analysis. The simulation example presents the efficiency of the variable-geometry suspension system and it shows that the system is suitable to be used as a driver assistance system. In the SIL (software-in-the-loop) simulation both the dSPACE-AutoBox hardware and the CarSim simulator are used as standard industrial tools.

Original languageEnglish
Pages (from-to)279-291
Number of pages13
JournalControl Engineering Practice
Volume61
DOIs
Publication statusPublished - Apr 1 2017

Fingerprint

Nonlinear analysis
Nonlinear Control
Nonlinear Analysis
Geometry
Wheels
Cambers
Force control
Sum of squares
Control Design
Tires
Wheel
Simulators
Polynomials
Hardware
Angle
Driver Assistance
Vehicle Dynamics
Force Control
D-space
Tilting

Keywords

  • LPV control design
  • Performance and stability analysis
  • SOS programming method
  • Tire characteristics
  • Variable-geometry suspension system

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Nonlinear analysis and control of a variable-geometry suspension system. / Németh, Balázs; Gáspár, P.

In: Control Engineering Practice, Vol. 61, 01.04.2017, p. 279-291.

Research output: Contribution to journalArticle

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