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Message ID: 398     Entry time: Tue Aug 8 16:20:24 2017
Author: Zach 
Type: Electronics 
Category: Modeling 
Subject: Rotated ESD  

2017-08-08

  • I rotated the ESD and calculated it's modal projections by rotating the data array that MATLAB extracts from COMSOL. I confirmed that this was properly done by plotting the profile and then computed and plotted both the rotated and normal projections.
  • The rotated ESD actually increases the force in some of the modes but decreases the forces in others. It markedly improved the force in 7 of the modes: 3, 6, 12, 18, 19, 22, and 26 while being quite weaker in about 4 of the modes: 9, 13, 14, and 15. This suggests that it may actually be useful to rotate the ESD as it excites some of the higher order modes a noticeable amount more. I am including plots of both modal profiles as well as a chart with mode numbers, shapes, and frequencies.

 

Attachment 1: ESD.pdf  23 kB  | Hide | Hide all
ESD.pdf
Attachment 2: Rotated.pdf  24 kB  | Hide | Hide all
Rotated.pdf
Attachment 3: resonantmodes.pdf  994 kB  | Hide | Hide all
resonantmodes.pdf
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