The Characteristics of the Platform for Active Vibration Isolation Based on Magnetorheological Elastomers

The work contains the description and the results of theoretical and experimental research of the active damper and the platform for active vibration isolation based on magnetorheological elastomers. The active damper of this type can be used as a drive of micro- or nanopositioning for a vibroinsulated object. Compared to piezoelectric systems, magnetorheological elastomers give such advantages for active control of vibration as a large range of displacements and more efficient absorption of the vibration energy. The platforms for active vibration isolation based on magnetorheological elastomers also provide the possibility to control amplitude-frequency characteristics and the positioning with millisecond response speed and nanometer running accuracy. A dynamic model of automatic control system has been developed to determine dynamic characteristics of the active damper (stability, quality and accuracy). The article presents the results of experimental studies of the most important active damper parameters. They include the starting current, transient time for stepping and transmission coefficient of the vibration displacement amplitude.

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