Update conclusion

index.org

@@ -2070,8 +2070,9 @@ Typical angular stroke for such flexible joints is expected.
 :UNNUMBERED: t
 :END:
 
-- Resonances should stay between 5Hz and 50Hz for payload masses up to 50kg
-- This corresponds to strut stiffnesses of $k \approx 10^5 - 10^6\,[N/m]$
+The axial stiffness of the struts (between two flexible joints) should be equal to $\approx 10^5 - 10^6\,[N/m]$.
+
+If voice coils are used, this corresponds to the axial stiffness of the membrane guiding the moving part of the voice coil.
 
 *** Actuator Force
 :PROPERTIES:
@@ -2084,7 +2085,6 @@ Based on simulations:
 
 If static deflection is to be compensated by the actuator, $\approx 100\,[N]$ of continuous force is required for each actuator.
 
-
 *** Actuator Stroke
 :PROPERTIES:
 :UNNUMBERED: t

ref.bib

@@ -64,7 +64,7 @@
   url = {https://doi.org/10.1016/j.jsv.2006.07.050},
 }
 
-@techreport{collette11_review,
+@misc{collette11_review,
   author = {Collette, C and Artoos, K and Guinchard, M and Janssens, S and Carmona Fernandez, P and Hauviller, C},
   institution = {cern},
   title = {Review of sensors for low frequency seismic vibration measurement},