Acoustic Rack
Generally, passive insulation of side panels, rear panels and roof plates is the technique commonly used to attenuate unwanted noise generation in office spaces or other noise sensitive application areas. Apart from these well-known passive vibration reduction methods, active methods have recently been playing an increasingly important role.
Rittal is consequently moving forward this development in cooperation with TU Darmstadt: With the Acoustic Rack, Rittal introduces a new concept in which noise is actively attenuated directly at the source. Active Structural Acoustic Control (ASAC) is used to influence the vibration properties by controlling the emission of sound with the help of piezoelectric actors.
With this technique, vibrations are already eliminated at the point of generation. By applying an electric voltage, these actors are able to directly influence the structural dynamics of the enclosure, counteracting the resonance behaviour of its components with the effect of reducing the intensity of the sound radiated from the rack by several dB. Vibrations of installed equipment such as fans, can thus be reduced and unwanted noise generation suppressed.
| For more information, visit the Website of the Fraunhofer Institute (German website). | 
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