This paper shows the influence on dynamic behavior of the car when it is equipped with magneto-rheological dampers controlled by a feedback. The feedback is built up in two ways; the first is implemented by a switch on/off control that is characterized by the injection of magnetic field with a constant value. It happens when a certain value of relative speed between the sprung and unsprung mass is exceeded. The second feedback is characterized by the H-infinity control which is based on the relative displacement in order to vary the magnetic field signal in a continuous manner. At the same time the H-infinity control of vehicle is maintained by taking into account the exceeding of speed signal in order to consider the substantial differences with the switch on/off control. These differences are evaluated in terms of relative displacement and speed between the unsprung and sprung mass. The exogenous excitation is the road disturbances which are introduced as a square wave input in order to emulate those that are commonly encountered on the road. All simulations and results are performed by MATLab-Simulink and Mathematica.

Barbaraci, G., Virzi' Mariotti, G. (2011). Influence on the Dynamic Behavior of Full Car Equipped by Magnetorheological Damper via Switch on/off and h∞ Controller. In Proceeding JUMV-SP-1101 Automotive Engineering for improved safety. Belgrado.

Influence on the Dynamic Behavior of Full Car Equipped by Magnetorheological Damper via Switch on/off and h∞ Controller

BARBARACI, Gabriele;VIRZI' MARIOTTI, Gabriele
2011-01-01

Abstract

This paper shows the influence on dynamic behavior of the car when it is equipped with magneto-rheological dampers controlled by a feedback. The feedback is built up in two ways; the first is implemented by a switch on/off control that is characterized by the injection of magnetic field with a constant value. It happens when a certain value of relative speed between the sprung and unsprung mass is exceeded. The second feedback is characterized by the H-infinity control which is based on the relative displacement in order to vary the magnetic field signal in a continuous manner. At the same time the H-infinity control of vehicle is maintained by taking into account the exceeding of speed signal in order to consider the substantial differences with the switch on/off control. These differences are evaluated in terms of relative displacement and speed between the unsprung and sprung mass. The exogenous excitation is the road disturbances which are introduced as a square wave input in order to emulate those that are commonly encountered on the road. All simulations and results are performed by MATLab-Simulink and Mathematica.
Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine
19-apr-2011
Science and Motor vehicles 2011
Belgrado
19.21 aprile 2011
XXIII
2011
00
Barbaraci, G., Virzi' Mariotti, G. (2011). Influence on the Dynamic Behavior of Full Car Equipped by Magnetorheological Damper via Switch on/off and h∞ Controller. In Proceeding JUMV-SP-1101 Automotive Engineering for improved safety. Belgrado.
Proceedings (atti dei congressi)
Barbaraci, G; Virzi' Mariotti, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/54093
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