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Modelling of the electrohydraulic full active vehicle suspension

Konieczny J.

Engineering Transactions

2008

Vol. 56, iss. 3

247-268

The study investigates various models of vehicle suspensions. A quarter-vehicle full active suspension is chosen for further analysis. A mathematical model, governed by nonlinear differential equations, is proposed that takes into account dynamic properties of an electrohydraulic actuator. The mathematical model being implemented, it was expressed in terms of the state variables. In part two, the physical model was implemented and parametric identification procedure was applied. Phenomenological model simulation data are compared with results of experimental testing of a full, active vehicle suspension. The final section is focused on static and dynamic properties of an openloop system (without a controller) determined on the basis of obtained models.