Add new test mat files

index.org

@@ -46,6 +46,7 @@
 
 #+name: fig:test-bench-picture
 #+caption: Picture of the test bench. The Attocube and mirror are covered by a "bubble sheet"
+#+ATTR_ORG: :width 600px
 [[file:figs/IMG-7865.JPG]]
 
 ** Matlab Init                                             :noexport:ignore:
@@ -61,13 +62,14 @@
 The first measurement was made during ~17 hours with a sampling time of $T_s = 0.1\,s$.
 
 #+begin_src matlab
-  load('./mat/long_test2.mat', 'x', 't')
+  load('./mat/long_test_plastic.mat', 'x', 't')
   Ts = 0.1; % [s]
 #+end_src
 
 #+begin_src matlab :exports none
   figure;
   plot(t/60/60, 1e9*x)
+  xlim([0, 17.5]);
   xlabel('Time [h]'); ylabel('Displacement [nm]');
 #+end_src
 
@@ -85,8 +87,8 @@ Let's fit the data with a step response to a first order low pass filter (Figure
 #+begin_src matlab
   f = @(b,x) b(1)*(1 - exp(-x/b(2)));
 
-  y_cur = x(t < 17*60*60);
+  y_cur = x(t < 17.5*60*60);
-  t_cur = t(t < 17*60*60);
+  t_cur = t(t < 17.5*60*60);
 
   nrmrsd = @(b) norm(y_cur - f(b,t_cur)); % Residual Norm Cost Function
   B0 = [400e-9, 2*60*60];                        % Choose Appropriate Initial Estimates
@@ -99,7 +101,7 @@ The corresponding time constant is (in [h]):
 #+end_src
 
 #+RESULTS:
-: 2.0576
+: 2.0658
 
 #+begin_src matlab :exports none
   figure;
@@ -107,6 +109,7 @@ The corresponding time constant is (in [h]):
   plot(t_cur/60/60, 1e9*y_cur);
   plot(t_cur/60/60, 1e9*f(B, t_cur));
   hold off;
+  xlim([0, 17.5])
   xlabel('Time [h]'); ylabel('Displacement [nm]');
 #+end_src
 
@@ -125,7 +128,7 @@ We only select the data between =t1= and =t2=.
 The obtained displacement is shown in Figure [[fig:long_meas_time_domain_zoom]].
 
 #+begin_src matlab
-  t1 = 11; t2 = 17; % [h]
+  t1 = 10.5; t2 = 17.5; % [h]
 
   x = x(t > t1*60*60 & t < t2*60*60);
   x = x - mean(x);
@@ -198,7 +201,7 @@ The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
 
 The Power Spectral Density of the measured displacement is computed
 #+begin_src matlab
-  win = hann(ceil(length(x)/10));
+  win = hann(ceil(length(x)/20));
   [p_2, f_2] = pwelch(x, win, [], [], 1/Ts);
 #+end_src
 
@@ -230,6 +233,7 @@ The computed ASD of the two measurements are combined in Figure [[fig:psd_combin
 
  #+name: fig:picture-test-bench-aluminium-tube
  #+caption: Aluminium tube used to protect the beam path from disturbances
+#+ATTR_ORG: :width 600px
  [[file:figs/IMG-7864.JPG]]
 
 ** Matlab Init                                             :noexport:ignore:
@@ -243,7 +247,7 @@ The computed ASD of the two measurements are combined in Figure [[fig:psd_combin
 
 ** Aluminium Tube and Bubble Sheet
 #+begin_src matlab
-  load('./mat/long_test_plastic.mat');
+  load('./mat/short_test_plastic.mat');
   Ts = 1e-4; % [s]
 #+end_src
 
@@ -264,7 +268,7 @@ The computed ASD of the two measurements are combined in Figure [[fig:psd_combin
 
 ** Only Aluminium Tube
 #+begin_src matlab
-  load('./mat/long_test_alu_tube.mat');
+  load('./mat/short_test_alu_tube.mat');
   Ts = 1e-4; % [s]
 #+end_src
 
@@ -286,7 +290,7 @@ The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
 
 ** Nothing
 #+begin_src matlab
-  load('./mat/long_test_without_material.mat');
+  load('./mat/short_test_without_material.mat');
   Ts = 1e-4; % [s]
 #+end_src
 
@@ -319,11 +323,12 @@ The time domain measurement is shown in Figure [[fig:short_meas_time_domain]].
   hold off;
   set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log');
   ylabel('ASD [$m/\sqrt{Hz}$]'); xlabel('Frequency [Hz]');
+  xlim([1e-1, 5e3]);
   legend('location', 'northeast');
 #+end_src
 
 #+begin_src matlab :tangle no :exports results :results file replace
-  exportFig('figs/asd_noise_comp_bubble_aluminium.pdf', 'width', 'wide', 'height', 'normal');
+  exportFig('figs/asd_noise_comp_bubble_aluminium.pdf', 'width', 'wide', 'height', 'tall');
 #+end_src
 
 #+name: fig:asd_noise_comp_bubble_aluminium