At Yuanda Tech, we determine the transmissibility of our isolators under realistic conditions.
What is it about?
The transmissibility of an isolator indicates by how much the vibrations on the top plate are reduced compared to the floor excitation. Due to the complex interaction of mechanics and control, this is a frequency-dependent value, which is therefore normally shown as a curve over the frequency axis. Usually the transmissibility is given in dB. A transmissibility of -20 dB, for example, means that the vibration amplitudes on the isolator are 10 times lower than those on the floor.
The transmissibility therefore does not provide any information about the actual amplitudes, but merely indicates the relative change in the amplitudes. Due to various reasons, the isolation is much more challenging under a very small excitation, one reason being that the sensors and electronics need to be very noise-free. That is why many competitors in the market measure the transmissibility under a synthetic, regulated excitation by a shaker, with significantly higher amplitudes. This makes the isolation of vibration much easier.
Yuanda Tech solution
At Yuanda Tech, however, we measure the performance of our isolators under realistic environmental conditions. We do not use a shaker for excitation, but the natural stimuli from the ground. This excitation spectrum contains typical frequencies and amplitudes such as those caused by building vibrations, operating doors or foot-impact sound.
What is your benefit?
Active vibration isolators are complex and special tools that are used to allow the operation of high-quality systems. Active isolators are only used if they have strict requirements for vibration excitation. It is therefore important for you as a customer to assess how the isolators perform when there is little disturbance, like you typically have in your laboratory. Yuanda Tech provides you with the proof how our systems perform under the most difficult conditions. Of course, our isolators also work equally well with stronger stimulation.
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