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Parameter identification of a full-car model for active suspension design

Guida D., Nilvetti F., Pappalardo C. M.

Journal of Achievements in Materials and Manufacturing Engineering

2010

Vol. 40, nr 2

138-148

Purpose: A method for identifying parameters of a full-car model for active suspension design Design/methodology/approach: The method is based on ERA/OKID identification procedure developed by Juang [1]. Findings: Numerical results show a good agreement with real system parameters. Research limitations/implications: Results show that this method works well only with a high signal-to-noise ratio. Practical implications: This method can be used as an aid to active suspension design. Originality/value: This procedure has been tested on the full-car model of suspension system in two cases: a) full-state measurements; b) not full-state measurements.

Nonlinear control design of active suspension based on full car model

Lagraa N., Boukhetala D., Boudjema F., Bloch G.

Archives of Control Sciences

2007

Vol. 17, no. 4

439-457

This paper develops a nonlinear backstepping design scheme for the active control of vehicle suspension systems using a nonlinear full car model with seven degrees of freedom. The non-linear control law is designed to improve ride comfort and reduce the displacement and the acceleration of the sprung mass in the heaving, rolling, and pitching directions. To demonstrate the effectiveness of the proposed control strategy, several simulations are performed on the nonlinear system. They show that active suspension based on backstepping scheme gives superior performances over passive suspension.