New damping technology based on mechanic impedance matching

  • 0

New damping technology based on mechanic impedance matching

Conventional vibration control technologies are still highly limited. Current damping systems fail to deal with low frequency ranges and extreme temperature scenarios.

In order to fill that gap MAG SOAR has developed a new technology able to enhance the performance of any vibration damping system by mechanical impedance coupling. Impedance is a term usually applied to electronics that represents the opposition or voltage that a circuit presents to a current; the equivalent to the resistance in direct current. Electrical engineers use transformers to multiply voltage and divide current or vice versa in order to adjust the circuit impedances and optimize the circuit power. The same concept can be defined for mechanical systems as Force to Speed ratio. However, up to now nobody has developed any effective analogue mechanical transformer to enhance the efficiency of a mechanical system.

Our ears: A perfect example of mechanical coupling

Surprisingly, nature offers a perfect example of mechanical impedance matching. Ears of most terrestrial animals are provided with mechanical impedance transformers. While the medium in the outer ear is obviously air, the medium in the inner ear is a liquid similar to water. Both of these elements present quite different mechanical impedances. Because of the difference in the impedances of the air and the liquid in the inner ear, an audition loss of about 30 dB should be expected. However, a set of small bones in the middle air (hammer, incus and stapes) compliantly attached, together with the different areas of the tympanic membrane and the oval window provides a mechanical advantage so that it compensates this audition loss. This mechanical impedance coupling is an example of mechanical transformer.

How does Z-Damper works?

Z-DAMPER follows the same working principle detailed on the paperZ-Damper: A New Paradigm for Attenuation of Vibrations”. This contactless magneto mechanism multiplies the input speed and reduces drastically the incoming force needed to achieve the necessary damping coefficient. Z-Damper technology can be used to control the vibration transfer in different mechanisms and to enhance other damping systems efficiency. It is also able to function at extreme temperature, higher and lower than any other damping system.