Abstract
The paper describes the structure and the results of numerical calculations andexperimental tests of a newly developed vibration power generator for a linearmagnetorheological (MR) damper. The generator consists of permanent magnets and coilwith foil winding. The device produces electrical energy according to Faraday’s law ofelectromagnetic induction. This energy is applied to vary the damping characteristics of theMR damper attached to the generator by the input current produced by the device.The objective of the numerical calculations was to determine the magnetic field distributionin the generator as well as the electric potential and current density in the generator’s coilduring the idle run and under the load applied to the MR damper control coil. The resultsof the calculations were used during the design and manufacturing stages of the device.The objective of the experimental tests carried out on a dynamic testing machine was toevaluate the generator’s efficiency and to compare the experimental and predicted data.The experimental results demonstrate that the engineered device enables a change in thekinetic energy of the reciprocal motion of the MR damper which leads to variations in thedamping characteristics. That is why the generator may be used to build upMR damper based vibration control systems which require no external power.
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