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Add plot without protecting material

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Thomas Dehaeze 2020-11-02 17:32:46 +01:00
parent 285b2e8e35
commit fbdab0e5f0
3 changed files with 31 additions and 0 deletions
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@ -232,6 +232,15 @@ The computed ASD of the two measurements are combined in Figure [[fig:psd_combin
#+caption: Aluminium tube used to protect the beam path from disturbances
[[file:figs/IMG-7864.JPG]]
** Matlab Init :noexport:ignore:
#+begin_src matlab :tangle no :exports none :results silent :noweb yes :var current_dir=(file-name-directory buffer-file-name)
<<matlab-dir>>
#+end_src
#+begin_src matlab :exports none :results silent :noweb yes
<<matlab-init>>
#+end_src
** Aluminium Tube and Bubble Sheet
#+begin_src matlab
load('./mat/long_test_plastic.mat');
@ -276,6 +285,26 @@ The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
#+end_src
** Nothing
#+begin_src matlab
load('./mat/long_test_without_material.mat');
Ts = 1e-4; % [s]
#+end_src
#+begin_src matlab
x = detrend(x, 0);
#+end_src
The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
#+begin_src matlab :exports none
figure;
plot(t, 1e9*x)
xlabel('Time [s]'); ylabel('Displacement [nm]');
#+end_src
#+begin_src matlab
win = hann(ceil(length(x)/10));
[p_3, f_3] = pwelch(x, win, [], [], 1/Ts);
#+end_src
** Comparison
#+begin_src matlab :exports none
@ -285,6 +314,8 @@ The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
'DisplayName', 'Alunimium + Bubble');
plot(f_2(8:end), sqrt(p_2(8:end)), '-', ...
'DisplayName', 'Aluminium');
plot(f_3(8:end), sqrt(p_3(8:end)), '-', ...
'DisplayName', 'nothing');
hold off;
set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log');
ylabel('ASD [$m/\sqrt{Hz}$]'); xlabel('Frequency [Hz]');