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Electromechanical transients in passive suspension systems with eddy current dampers

This paper is devoted to modeling and numerical simulation of electromechanical transients in a passive suspension single degree of freedom system with eddy current dampers (ECD). The damper consists from an inductor with permanent magnets and a nonmagnetic conductive hollow cylindrical rotor. A mechanical actuator is used to convert a translating motion into rotation of the rotor. A full dynamic mathematical model of the ECD and the suspension system is presented. The model takes into consideration electromagnetic transients and nonlinear characteristics of the ECD. The analysis of dynamic behavior of the system is performed by computer numerical simulation. The simulation results show that the mutual influence of electromagnetic and mechanical processes should be taken into account for increasing the accuracy, up to 20% in some cases.