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2 Journal of Achievements in Materials and Manufacturing Engineering

2 2010

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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.

Dry friction of bearings on dynamics and control of an inverted pendulum

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

Journal of Achievements in Materials and Manufacturing Engineering

2010

Vol. 38, nr 1

80-94

Purpose: Investigation of dry friction parameters on the control system of a cart pendulum. Design/methodology/approach: A geometrical approach has been used to analyze the influence of bearing friction on the cart-pendulum dynamics. This approach was developed by one of authors in the paper “ Influence of the Variation between Static and Kinetic Friction on Stick-Slip Instability” pubblished by WEAR 1993. Findings: Relations that allow us to evaluate how the friction parameters of bearings influence the performances of the control system of a cart-pendulum. Research limitations/implications: The “a priori knowing” of friction parameters is the intrinsic limitation of this method. Originality/value: A novel methodology for designing of more effective control systems.