Update Content - 2022-04-28

content/zettels/feedback_control.md

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+title = "Feedback Control"
+author = ["Dehaeze Thomas"]
+draft = false
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+
+Tags
+:
+
+## References
+
+<style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">
+</div>

content/zettels/feedforward_control.md

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+title = "Feedforward Control"
+author = ["Dehaeze Thomas"]
+draft = false
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+
+Tags
+:
+
+## References
+
+<style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">
+</div>

content/zettels/passive_damping.md

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+title = "Passive Damping"
+author = ["Dehaeze Thomas"]
+draft = false
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+
+Tags
+:
+
+
+## Bibliography {#bibliography}
+
+## References
+
+<style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">
+</div>

content/zettels/tuned_mass_damper.md

@@ -23,16 +23,16 @@ The TMD then has large internal damping such that the energy is dissipated (i.e.
 
 The optimal parameters of the tuned mass damper can be roughly estimated as follows:
 
--   Choose the maximum mass of the TMD \\(m\\) and note:
-    \\[ \mu = m/M \\]
-    where \\(M\\) is the mass of the system to damp
+-   Choose the maximum acceptable mass of the TMD \\(m\_2\\) and note:
+    \\[ \mu = m\_2/m\_1 \\]
+    where \\(m\_1\\) is the mass of the system to damp
 -   The resonance frequency of the tuned mass damper should be chosen to be
     \\[ \nu = \frac{1}{1 + \mu} \approx 1 \\]
     As usually we have \\(\mu \ll 1\\) (i.e. TMD mass small compared to the structure mass, for instance few percent)
 -   This allows to compute the stiffness of the TMD:
-    \\[ k = \nu^2 K \mu = K \frac{\mu}{(1 + \mu)^2} \\]
+    \\[ k\_2 = \nu^2 k\_1 \mu = k\_1 \frac{\mu}{(1 + \mu)^2} \\]
 -   Finally, the optimal damping of the TMD is:
-    \\[ \xi = \sqrt{\frac{3\mu}{8 (1 + \mu)}} \Longrightarrow c = 2 \xi \sqrt{k m} \\]
+    \\[ \xi\_2 = \sqrt{\frac{3 \mu}{8 (1 + \mu)}} \Longrightarrow c\_2 = 2 \xi\_2 \sqrt{k\_2 m\_2} \\]
 
 
 ## Simple TMD model {#simple-tmd-model}