diff --git a/2018-01-12 - Marc/data/id31_microstation_2018_01_12_frf.mat b/2018-01-12 - Marc/data/id31_microstation_2018_01_12_frf.mat index 6b7cb04..e10fe4b 100644 Binary files a/2018-01-12 - Marc/data/id31_microstation_2018_01_12_frf.mat and b/2018-01-12 - Marc/data/id31_microstation_2018_01_12_frf.mat differ diff --git a/2018-01-12 - Marc/figs/hexa_x_frf.png b/2018-01-12 - Marc/figs/hexa_x_frf.png index 59b3f1c..8e07967 100644 Binary files a/2018-01-12 - Marc/figs/hexa_x_frf.png and b/2018-01-12 - Marc/figs/hexa_x_frf.png differ diff --git a/2018-01-12 - Marc/figs/hexa_y_frf.png b/2018-01-12 - Marc/figs/hexa_y_frf.png index 9079923..bbce015 100644 Binary files a/2018-01-12 - Marc/figs/hexa_y_frf.png and b/2018-01-12 - Marc/figs/hexa_y_frf.png differ diff --git a/2018-01-12 - Marc/figs/hexa_z_frf.png b/2018-01-12 - Marc/figs/hexa_z_frf.png index b00d1eb..c081776 100644 Binary files a/2018-01-12 - Marc/figs/hexa_z_frf.png and b/2018-01-12 - Marc/figs/hexa_z_frf.png differ diff --git a/2018-01-12 - Marc/figs/marble_x_frf.png b/2018-01-12 - Marc/figs/marble_x_frf.png index d1a6270..86be738 100644 Binary files a/2018-01-12 - Marc/figs/marble_x_frf.png and b/2018-01-12 - Marc/figs/marble_x_frf.png differ diff --git a/2018-01-12 - Marc/figs/marble_y_frf.png b/2018-01-12 - Marc/figs/marble_y_frf.png index ee0bc04..1741c3c 100644 Binary files a/2018-01-12 - Marc/figs/marble_y_frf.png and b/2018-01-12 - Marc/figs/marble_y_frf.png differ diff --git a/2018-01-12 - Marc/figs/marble_z_frf.png b/2018-01-12 - Marc/figs/marble_z_frf.png index 46fe63b..d4f0c14 100644 Binary files a/2018-01-12 - Marc/figs/marble_z_frf.png and b/2018-01-12 - Marc/figs/marble_z_frf.png differ diff --git a/2018-01-12 - Marc/index.html b/2018-01-12 - Marc/index.html index d76c647..4f12bb9 100644 Binary files a/2018-01-12 - Marc/index.html and b/2018-01-12 - Marc/index.html differ diff --git a/2018-01-12 - Marc/index.org b/2018-01-12 - Marc/index.org index 4617c15..7979b42 100644 --- a/2018-01-12 - Marc/index.org +++ b/2018-01-12 - Marc/index.org @@ -76,49 +76,61 @@ The structure is excited using an *instrumented hammer* with impacts on <> #+end_src -Data is scaled and integrated one time to go from velocity to displacement. +The Geophone sensitivity is defined below: +#+begin_src matlab :results none + w0 = 4.5*2*pi; % [rad/s] + ksi = 0.38; + G0 = 31.3; % [V/(m/s)] + G = G0*(s/w0)^2/((s/w0)^2 + 2*ksi*(s/w0) + 1); % [V/(m/s)] +#+end_src + +We then: +- load the data +- add a minus sign when needed +- integrate the signal to have displacement instead of velocity +- scaled with the sensitivity of the Geophone #+begin_src matlab :exports code :results none load('./raw_data/freq_frf.mat') % freq_frf w = j*2*pi*freq_frf; % j.omega in [rad/s] - scale_factor = 1; + scaling = squeeze(freqresp(G, 2*pi*freq_frf))/G0; load('./raw_data/frf_marble_x.mat') % ReIm1 frf_marble_x = zeros(size(ReIm1, 1), 3); - frf_marble_x(:, 1) = -scale_factor*ReIm1(:, 2)./w; % marble_x - frf_marble_x(:, 2) = -scale_factor*ReIm1(:, 3)./w; % tilt_x - frf_marble_x(:, 3) = -scale_factor*ReIm1(:, 4)./w; % hexa_x + frf_marble_x(:, 1) = -ReIm1(:, 2)./w./scaling; % marble_x + frf_marble_x(:, 2) = -ReIm1(:, 3)./w./scaling; % tilt_x + frf_marble_x(:, 3) = -ReIm1(:, 4)./w./scaling; % hexa_x load('./raw_data/frf_hexa_x.mat') % ReIm2 frf_hexa_x = zeros(size(ReIm2, 1), 3); - frf_hexa_x(:, 1) = -scale_factor*ReIm2(:, 2)./w; % marble_x - frf_hexa_x(:, 2) = -scale_factor*ReIm2(:, 3)./w; % tilt_x - frf_hexa_x(:, 3) = -scale_factor*ReIm2(:, 4)./w; % hexa_x + frf_hexa_x(:, 1) = -ReIm2(:, 2)./w./scaling; % marble_x + frf_hexa_x(:, 2) = -ReIm2(:, 3)./w./scaling; % tilt_x + frf_hexa_x(:, 3) = -ReIm2(:, 4)./w./scaling; % hexa_x load('./raw_data/frf_marble_y.mat') % ReIm3 frf_marble_y = zeros(size(ReIm3, 1), 3); - frf_marble_y(:, 1) = -scale_factor*ReIm3(:, 2)./w; % marble_y - frf_marble_y(:, 2) = -scale_factor*ReIm3(:, 3)./w; % tilt_y - frf_marble_y(:, 3) = -scale_factor*ReIm3(:, 4)./w; % hexa_y + frf_marble_y(:, 1) = -ReIm3(:, 2)./w./scaling; % marble_y + frf_marble_y(:, 2) = -ReIm3(:, 3)./w./scaling; % tilt_y + frf_marble_y(:, 3) = -ReIm3(:, 4)./w./scaling; % hexa_y load('./raw_data/frf_hexa_y.mat') % ReIm4 frf_hexa_y = zeros(size(ReIm4, 1), 3); - frf_hexa_y(:, 1) = scale_factor*ReIm4(:, 2)./w; % marble_y - frf_hexa_y(:, 2) = scale_factor*ReIm4(:, 3)./w; % tilt_y - frf_hexa_y(:, 3) = scale_factor*ReIm4(:, 4)./w; % hexa_y + frf_hexa_y(:, 1) = ReIm4(:, 2)./w./scaling; % marble_y + frf_hexa_y(:, 2) = ReIm4(:, 3)./w./scaling; % tilt_y + frf_hexa_y(:, 3) = ReIm4(:, 4)./w./scaling; % hexa_y load('./raw_data/frf_marble_z.mat') % ReIm5 frf_marble_z = zeros(size(ReIm5, 1), 3); - frf_marble_z(:, 1) = scale_factor*ReIm5(:, 2)./w; % marble_z - frf_marble_z(:, 2) = scale_factor*ReIm5(:, 3)./w; % tilt_z - frf_marble_z(:, 3) = scale_factor*ReIm5(:, 4)./w; % hexa_z + frf_marble_z(:, 1) = ReIm5(:, 2)./w./scaling; % marble_z + frf_marble_z(:, 2) = ReIm5(:, 3)./w./scaling; % tilt_z + frf_marble_z(:, 3) = ReIm5(:, 4)./w./scaling; % hexa_z load('./raw_data/frf_hexa_z.mat') % ReIm6 frf_hexa_z = zeros(size(ReIm6, 1), 3); - frf_hexa_z(:, 1) = scale_factor*ReIm6(:, 2)./w; % marble_z - frf_hexa_z(:, 2) = scale_factor*ReIm6(:, 3)./w; % tilt_z - frf_hexa_z(:, 3) = scale_factor*ReIm6(:, 4)./w; % hexa_z + frf_hexa_z(:, 1) = ReIm6(:, 2)./w./scaling; % marble_z + frf_hexa_z(:, 2) = ReIm6(:, 3)./w./scaling; % tilt_z + frf_hexa_z(:, 3) = ReIm6(:, 4)./w./scaling; % hexa_z #+end_src #+begin_src matlab :exports code :results none @@ -159,6 +171,24 @@ Data is scaled and integrated one time to go from velocity to displacement. coh_hexa_z(:, 3) = coh6(:, 4); % hexa_z #+end_src +Finally, we save the processed data. +#+begin_src matlab :results none + save('./data/id31_microstation_2018_01_12_frf.mat', ... + 'frf_marble_x', ... + 'frf_marble_y', ... + 'frf_marble_z', ... + 'frf_hexa_x', ... + 'frf_hexa_y', ... + 'frf_hexa_z'); + save('./data/id31_microstation_2018_01_12_frf.mat', ... + 'coh_marble_x', ... + 'coh_marble_y', ... + 'coh_marble_z', ... + 'coh_hexa_x', ... + 'coh_hexa_y', ... + 'coh_hexa_z'); +#+end_src + ** X-direction FRF #+begin_src matlab :exports none :results none figure; @@ -169,7 +199,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src @@ -194,7 +224,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src @@ -219,7 +249,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src @@ -243,7 +273,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src @@ -268,7 +298,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src @@ -292,7 +322,7 @@ Data is scaled and integrated one time to go from velocity to displacement. hold off; set(gca, 'Xscale', 'log'); set(gca, 'Yscale', 'log'); xlabel('Frequency [Hz]'); ylabel('Displacement/Force [m/N]'); - xlim([10, 200]); xticks([10, 20, 50, 100, 200]); + xlim([5, 200]); xticks([5, 10, 20, 50, 100, 200]); legend('Location', 'southwest'); #+end_src diff --git a/actuators-sensors/index.org b/actuators-sensors/index.org index e45ecba..ccd95cd 100644 --- a/actuators-sensors/index.org +++ b/actuators-sensors/index.org @@ -187,6 +187,9 @@ Its bode plot is shown on figure [[fig:L4C_bode_plot]]. #+RESULTS: fig:L4C_bode_plot [[file:figs/L4C_bode_plot.png]] +*** L-22 +- https://www.passcal.nmt.edu/content/instrumentation/sensors/short-period-sensors/l-22-sp-sensor + ** Accelerometers *** Pieozoelectric acc. 356b18 - 3 axis - https://www.pcbpiezotronics.fr/produit/accelerometres/356b18/