Add few comments on simscape multibody

identification/index.org

@@ -41,6 +41,21 @@
 #+PROPERTY: header-args:latex+ :output-dir figs
 :END:
 
+* Introduction                                                       :ignore:
+The goal here is to make an identification of the micro-station in order to compare the model with the measurements on the real micro-station.
+
+In order to do so:
+- Decide where to virtually excite the station and where to measure its motion
+- Extract transfer functions from the excitation forces to the measured motion
+- Compare those transfer functions with the modal analysis
+
+For the excitation, we can choose the same excitation points as the one used for the modal test.
+For the measurement points, we can choose the Center of Mass of each solid body.
+The center of mass of each solid body is not easily defined using Simscape.
+Indeed, we can define the center of mass of any solid body but not of multiple solid bodies. However, one solid body is composed of multiple STEP files.
+One solution could be to use one STEP file for one solid body.
+However, the position of the center of mass can be exported using simulink and then defined on Simscape.
+
 * ZIP file containing the data and matlab files                      :ignore:
 #+begin_src bash :exports none :results none
   if [ matlab/identification_micro_station.m -nt data/identification_micro_station.zip ]; then
@@ -56,9 +71,25 @@
   All the files (data and Matlab scripts) are accessible [[file:data/identification_micro_station.zip][here]].
 #+end_note
 
+* 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
 
 * Identification of the micro-station
+#+begin_src matlab
+  simulinkproject('../');
+#+end_src
+
+#+begin_src matlab
+  open sim_micro_station_id.slx
+#+end_src
 
 * Plot the obtained transfer functions
 
 * Compare with the modal measurements
+* Modal Identification of the micro station