Abstract
Previous work regarding the vibration transmissibility control, using electrodynamic actuators, based on semi-active solutions, proved the efficiency of this strategy. The studied system is a simple, one degree of freedom system. The system integrates mechanical components for passive isolation and an electrodynamic actuator for active and semi-active control of vibrations. The most efficient solution is to design an accurate model and simulate strategies on it. Two strategies are involved: feed-forward control with an accelerometer placed on the mobile mass for acceleration detection and the second one is based on movement detection using the self-induced current due to the actuator's coil movement in a magnetic field. A detailed simulation model, using a software designed for electronic circuit simulation and experimental testing are performed in both cases. The model should be improved for considering the complex impedance of the actuator (mechanically but also electrically), this being the subject of future works.
Highlights
In most cases we try to find purely mechanical solutions because they are cheaper and easier to make
Springs and shock absorbers are replaced with actuators that, together with sensors and control systems, emulate the behaviour of mechanical systems
The main disadvantage of mechanical systems is that their parameters cannot be modulated during live operation
Summary
In most cases we try to find purely mechanical solutions because they are cheaper and easier to make. Previous work regarding the vibration transmissibility control using electrodynamic actuators, and semi-active solutions, proved the efficiency of this strategy [3], [4]. The main purpose is to reduce as much as possible the vibration’s amplitude generated either from the environment or from certain mechanical devices near vibration-sensitive systems.
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