Suppression of vibrations in a nonlinear half-car model using a magneto-rheological damper
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Data
2014
Autores
Tusset, Angelo Marcelo
Piccirillio, Vinicius
Janzen, Frederic Conrad
Lenz, Wagner B.
Jeferson J. de Lima,
Balthazar, José Manoel [UNESP]
Brasil, Reyolando M. L. R. F.
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Resumo
The present work investigates the nonlinear response of a half-car model. The disturbances of the road are assumed to be sinusoidal. After constructing the bifurcation diagram, we use the 0-1 test to identify chaotic motions. The main objective of this study is to eliminate chaotic behavior of the chassis and reduce its vibrations. To accomplish this, a semi-active vehicle suspension control system, using magneto-rheological dampers, is proposed. The proposed semi-active control strategy consists of two nonlinear control laws: a feedforward control, and a feedback control. They are obtained by considering the SDRE (State Dependent Riccati Equation) control, where the control parameter is the voltage applied to the coils of the magneto-rheological dampers. Numerical results show that the proposed control method is effective in significantly reducing of the chassis vibration, increasing, therefore, passenger comfort.
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Palavras-chave
MR damper, Nonlinear and Chaotic Behavior, control SDRE, control the coil voltage
Como citar
Mathematics In Engineering, Science And Aerospace, v. 5, n. 4, p. 427-443, 2014.