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Add text on soft granite mounts

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Thomas Dehaeze 2020-05-08 17:07:01 +02:00
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@ -2151,14 +2151,17 @@ This was done for the following reasons:
** Using soft mounts for the Granite ** Using soft mounts for the Granite
<<sec:soft_granite>> <<sec:soft_granite>>
If it is found that ground motion is what is limiting the system performances, an option is to support the granite on soft mounts.
These soft mounts can topically consists of air cylinders with pistons guided by air bearings.
The suspension mode of the granite would then be in the order of few Hertz, and the ground motion would be filtered out above that frequency as shown in Figure [[fig:opt_stiff_soft_granite_Dw]].
#+name: fig:opt_stiff_soft_granite_Dw #+name: fig:opt_stiff_soft_granite_Dw
#+caption: Change of sensibility to Ground motion when using a stiff Granite (solid curves) and a soft Granite (dashed curves) #+caption: Change of sensibility to Ground motion when using stiff Granite mounts (solid curves) and soft Granite mounts (dashed curves)
[[file:figs/opt_stiff_soft_granite_Dw.png]] [[file:figs/opt_stiff_soft_granite_Dw.png]]
This means that above the suspension mode of the granite (here around 2Hz), the granite
Sensible to detector motion?
** Micro Station Architecture ** Micro Station Architecture
https://tdehaeze.github.io/nass-simscape/alternative-micro-station-architecture.html https://tdehaeze.github.io/nass-simscape/alternative-micro-station-architecture.html