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<head>
<!-- 2020-11-12 jeu. 09:48 -->
<!-- 2020-11-12 jeu. 13:54 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>Research Pages</title>
<meta name="generator" content="Org mode" />
@ -26,12 +26,12 @@
Welcome to my research pages.
</p>
<div id="outline-container-org32b3849" class="outline-2">
<h2 id="org32b3849"><span class="section-number-2">1</span> Papers</h2>
<div id="outline-container-org949a613" class="outline-2">
<h2 id="org949a613"><span class="section-number-2">1</span> Papers</h2>
<div class="outline-text-2" id="text-1">
</div>
<div id="outline-container-org9521449" class="outline-3">
<h3 id="org9521449"><span class="section-number-3">1.1</span> Conference Papers</h3>
<div id="outline-container-orgfcc0e7b" class="outline-3">
<h3 id="orgfcc0e7b"><span class="section-number-3">1.1</span> Conference Papers</h3>
<div class="outline-text-3" id="text-1-1">
<ul class="org-ul">
<li>Dehaeze, T., Mattenet, M. M., &amp; Collette, C., <b>Sample Stabilization For Tomography Experiments In Presence Of Large Plant Uncertainty</b>, In MEDSI&rsquo;18 (pp. 153–157) (2018). Geneva, Switzerland: JACoW Publishing. (<a href="dehaeze18_sampl_stabil_for_tomog_exper/index.html">link</a>)</li>
@ -41,8 +41,8 @@ Welcome to my research pages.
</div>
</div>
<div id="outline-container-org7d1a478" class="outline-3">
<h3 id="org7d1a478"><span class="section-number-3">1.2</span> Journal Papers</h3>
<div id="outline-container-org1643829" class="outline-3">
<h3 id="org1643829"><span class="section-number-3">1.2</span> Journal Papers</h3>
<div class="outline-text-3" id="text-1-2">
<ul class="org-ul">
<li>Verma, M., Dehaeze, T., Zhao, G., Watchi, J., &amp; Collette, C., <b>Virtual sensor fusion for high precision control, Mechanical Systems and Signal Processing</b>, 150, 107241 (2020). <a href="http://dx.doi.org/10.1016/j.ymssp.2020.107241">http://dx.doi.org/10.1016/j.ymssp.2020.107241</a> (<a href="personnal-papers/verma20_virtual_sensor_fusion_high_precis_contr.pdf">pdf</a>)</li>
@ -52,123 +52,191 @@ Welcome to my research pages.
</div>
</div>
<div id="outline-container-org5dcf4f6" class="outline-2">
<h2 id="org5dcf4f6"><span class="section-number-2">2</span> Useful pages / Tutorials</h2>
<div id="outline-container-org9fe1ce8" class="outline-2">
<h2 id="org9fe1ce8"><span class="section-number-2">2</span> Useful Pages / Tutorials</h2>
<div class="outline-text-2" id="text-2">
</div>
<div id="outline-container-org0fe5d04" class="outline-3">
<h3 id="org0fe5d04"><span class="section-number-3">2.1</span> Spectral Analysis</h3>
<div id="outline-container-org88c75df" class="outline-3">
<h3 id="org88c75df"><span class="section-number-3">2.1</span> General Mechatronics</h3>
<div class="outline-text-3" id="text-2-1">
<p>
<a href="spectral-analysis/index.html">Spectral Analysis</a>
</p>
<blockquote>
<p>
Basics of spectral analysis are presented alongside the Matlab codes.
This includes:
</p>
<ul class="org-ul">
<li><a href="spectral-analysis/index.html">Spectral Analsis</a></li>
<li>power spectral density</li>
<li>cumulative power spectrum</li>
<li>noise budgeting</li>
<li>&#x2026;</li>
</ul>
</div>
</div>
</blockquote>
<div id="outline-container-orgb7f7088" class="outline-3">
<h3 id="orgb7f7088"><span class="section-number-3">2.2</span> Finite Element Models and Simscape&#xa0;&#xa0;&#xa0;<span class="tag"><span class="simscape">simscape</span></span></h3>
<div class="outline-text-3" id="text-2-2">
<ul class="org-ul">
<li><a href="fem-simscape/index.html">Finite Element Models with Simscape</a></li>
</ul>
</div>
</div>
<div id="outline-container-org92b20b8" class="outline-3">
<h3 id="org92b20b8"><span class="section-number-3">2.3</span> Gravity with Simscape&#xa0;&#xa0;&#xa0;<span class="tag"><span class="simscape">simscape</span></span></h3>
<div class="outline-text-3" id="text-2-3">
<ul class="org-ul">
<li><a href="simscape-gravity/index.html">Manage Gravity within Simscape</a></li>
</ul>
</div>
</div>
<div id="outline-container-orgd48ebf8" class="outline-3">
<h3 id="orgd48ebf8"><span class="section-number-3">2.4</span> Bank of Filters using matlab</h3>
<div class="outline-text-3" id="text-2-4">
<p>
<a href="filters-matlab-bank/index.html">Bank of Filters using matlab</a>
</p>
<blockquote>
<p>
Several types of linear filters (low pass, high pass, notch, lead, etc.) are presented with the corresponding Matlab code.
</p>
</blockquote>
</div>
</div>
<div id="outline-container-orgd62c9a3" class="outline-3">
<h3 id="orgd62c9a3"><span class="section-number-3">2.2</span> System Modeling using Simscape</h3>
<div class="outline-text-3" id="text-2-2">
<p>
<a href="fem-simscape/index.html">Finite Element Models with Simscape</a>
</p>
<blockquote>
<p>
Finite Element Models (FEM) can be included into Simscape Multi-Body models.
This document presents how to do so.
</p>
</blockquote>
<p>
<a href="simscape-gravity/index.html">Manage Gravity within Simscape</a>
</p>
<blockquote>
<p>
Gravity can add some problems in multi-body simscape models: at the beginning of the simulation, some sag will be experience that may be unwanted.
In order to start the simulation at equilibrium, few measured can be employed that are described in this document.
</p>
</blockquote>
</div>
</div>
</div>
<div id="outline-container-org38a264f" class="outline-2">
<h2 id="org38a264f"><span class="section-number-2">3</span> Test Benches / Experiments</h2>
<div id="outline-container-org0e59fc9" class="outline-2">
<h2 id="org0e59fc9"><span class="section-number-2">3</span> Test Benches / Experiments</h2>
<div class="outline-text-2" id="text-3">
</div>
<div id="outline-container-orgfc6787f" class="outline-3">
<h3 id="orgfc6787f"><span class="section-number-3">3.1</span> Amplified Piezoelectric Actuator</h3>
<div id="outline-container-org340d270" class="outline-3">
<h3 id="org340d270"><span class="section-number-3">3.1</span> Intrumentation Related</h3>
<div class="outline-text-3" id="text-3-1">
<ul class="org-ul">
<li><a href="test-bench-apa/index.html">Amplified Piezoelectric Actuator</a></li>
</ul>
<p>
<a href="test-bench-piezo-amplifiers/index.html">Voltage Amplifiers for Piezoelectric Actuators</a>
</p>
<blockquote>
<p>
Voltage amplifiers for capacitive loads (piezoelectric actuators) are measured in term of dynamics from input voltage to output voltage.
Their output impedance are also measured.
</p>
</blockquote>
<p>
<a href="attocube-test-bench/index.html">Attocube</a>
</p>
<blockquote>
<p>
The Attocube (a fiber based interferometer) is tested.
Its noise characteristics as well as non-linearities are measured.
</p>
</blockquote>
</div>
</div>
<div id="outline-container-orgf85ee12" class="outline-3">
<h3 id="orgf85ee12"><span class="section-number-3">3.2</span> Sensor Fusion</h3>
<div id="outline-container-org8e563fd" class="outline-3">
<h3 id="org8e563fd"><span class="section-number-3">3.2</span> Amplified Piezoelecric Actuator</h3>
<div class="outline-text-3" id="text-3-2">
<ul class="org-ul">
<li><a href="sensor-fusion-test-bench/index.html">Sensor Fusion</a></li>
</ul>
</div>
</div>
<p>
<a href="test-bench-apa/index.html">Amplified Piezoelectric Actuator - Test bench and Finite Element Model</a>
</p>
<blockquote>
<p>
A test bench is used to characterise the performances of an Amplified Piezoelectric Actuator (APA).
The dynamics of the system is identified and compared with a Finite Element Model (FEM).
</p>
</blockquote>
<div id="outline-container-orgbc6bd9c" class="outline-3">
<h3 id="orgbc6bd9c"><span class="section-number-3">3.3</span> Encoder and Interferometer</h3>
<div class="outline-text-3" id="text-3-3">
<ul class="org-ul">
<li><a href="encoder-test-bench/index.html">Encoder and Interferometer</a></li>
</ul>
</div>
</div>
<p>
<a href="encoder-test-bench/index.html">Encoder in parallel with an Amplified Piezoelectric Actuator</a>
</p>
<blockquote>
<p>
An encoder is fixed in parallel with an amplified piezoelectric actuator.
The transfer function from the actuator to the motions measured by the encoder is identified.
</p>
</blockquote>
<div id="outline-container-org9df86e6" class="outline-3">
<h3 id="org9df86e6"><span class="section-number-3">3.4</span> Attocube</h3>
<div class="outline-text-3" id="text-3-4">
<ul class="org-ul">
<li><a href="attocube-test-bench/index.html">Attocube</a></li>
</ul>
</div>
</div>
<p>
<a href="test-bench-force-sensor/index.html">Piezoelectric Stack as Force Sensor</a>
</p>
<blockquote>
<p>
A part of a piezoelectric stack can be used as a force sensor.
Then, the force sensors is collocated with the part of the stack used as an actuator and Integral Force Feedback control strategy can be used to add damping in the system.
This is performed on an Amplified Piezoelectric Actuator
</p>
</blockquote>
<div id="outline-container-orgae99866" class="outline-3">
<h3 id="orgae99866"><span class="section-number-3">3.5</span> Voltage Amplifiers for Piezoelectric Actuators</h3>
<div class="outline-text-3" id="text-3-5">
<ul class="org-ul">
<li><a href="test-bench-piezo-amplifiers/index.html">Voltage Amplifiers for Piezoelectric Actuators</a></li>
</ul>
</div>
</div>
<div id="outline-container-orgb7f8f36" class="outline-3">
<h3 id="orgb7f8f36"><span class="section-number-3">3.6</span> Metrology Concept 1</h3>
<div class="outline-text-3" id="text-3-6">
<ul class="org-ul">
<li><a href="nass-metrology-test-bench/index.html">Metrology Concept 1</a></li>
</ul>
</div>
</div>
<div id="outline-container-org4c09861" class="outline-3">
<h3 id="org4c09861"><span class="section-number-3">3.7</span> Force Sensor</h3>
<div class="outline-text-3" id="text-3-7">
<ul class="org-ul">
<li><a href="test-bench-force-sensor/index.html">Force Sensor</a></li>
</ul>
<p>
<a href="sensor-fusion-test-bench/index.html">Sensor Fusion of Inertial Sensors</a>
</p>
<blockquote>
<p>
A geophone and a accelerometer are experimentally fused together using complementary filters.
The goal is to form a <i>super sensor</i> that has better noise characteristics than the individual sensors.
</p>
</blockquote>
</div>
</div>
</div>
<div id="outline-container-org090a1ba" class="outline-2">
<h2 id="org090a1ba"><span class="section-number-2">4</span> Nano Active Stabilization System</h2>
<div id="outline-container-org677fec3" class="outline-2">
<h2 id="org677fec3"><span class="section-number-2">4</span> PhD Project - Nano Active Stabilization System</h2>
<div class="outline-text-2" id="text-4">
<ul class="org-ul">
<li><a href="nass-report-2020/index.html">NASS - Report 2020</a></li>
<li><a href="nass-micro-station-measurements/index.html">NASS - Micro Station Measurements</a></li>
<li><a href="nass-simscape/docs/index.html">NASS - Simscape Model</a></li>
</ul>
<p>
<a href="nass-report-2020/index.html">NASS - Report 2020</a>
</p>
<blockquote>
<p>
General report on the NASS project made in 2020.
</p>
</blockquote>
<p>
<a href="nass-micro-station-measurements/index.html">NASS - Micro Station Measurements</a>
</p>
<blockquote>
<p>
This document gathers all the measurements made on the Micro-Station.
</p>
</blockquote>
<p>
<a href="nass-simscape/docs/index.html">NASS - Simscape Model</a>
</p>
<blockquote>
<p>
This document presents the Simscape model used to represent the micro-station as well as the Nano Active Stabilization System.
</p>
</blockquote>
<p>
<a href="nass-fem/index.html">NASS - Finite Element Models</a>
</p>
<blockquote>
<p>
Finite Element Models of the nano-hexapod are developed and used with Simscape to perform dynamics meaurements.
In this document, models of Amplified Piezoelectric Actuators, Flexible Joints, and Entire Stewart platform&rsquo;s strut are developed and tested.
</p>
</blockquote>
<p>
<a href="nass-metrology-test-bench/index.html">NASS - Metrology Concept 1</a>
</p>
<blockquote>
<p>
Presentation of the first metrology concept for the NASS.
First experimental results are presented.
</p>
</blockquote>
</div>
</div>
</div>

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@ -44,43 +44,106 @@ Welcome to my research pages.
- [[file:dehaeze20_virtu_senso_fusio/index.org][Virtual Sensor Fusion]]
- [[file:svd-control/index.org][SVD Control - Simscape Models]]
* Useful pages / Tutorials
** Spectral Analysis
- [[file:spectral-analysis/index.org][Spectral Analsis]]
* Useful Pages / Tutorials
** General Mechatronics
** Finite Element Models and Simscape :simscape:
- [[file:fem-simscape/index.org][Finite Element Models with Simscape]]
[[file:spectral-analysis/index.org][Spectral Analysis]]
#+begin_quote
Basics of spectral analysis are presented alongside the Matlab codes.
This includes:
- power spectral density
- cumulative power spectrum
- noise budgeting
- ...
#+end_quote
** Gravity with Simscape :simscape:
- [[file:simscape-gravity/index.org][Manage Gravity within Simscape]]
** Bank of Filters using matlab
[[file:filters-matlab-bank/index.org][Bank of Filters using matlab]]
#+begin_quote
Several types of linear filters (low pass, high pass, notch, lead, etc.) are presented with the corresponding Matlab code.
#+end_quote
** System Modeling using Simscape
[[file:fem-simscape/index.org][Finite Element Models with Simscape]]
#+begin_quote
Finite Element Models (FEM) can be included into Simscape Multi-Body models.
This document presents how to do so.
#+end_quote
[[file:simscape-gravity/index.org][Manage Gravity within Simscape]]
#+begin_quote
Gravity can add some problems in multi-body simscape models: at the beginning of the simulation, some sag will be experience that may be unwanted.
In order to start the simulation at equilibrium, few measured can be employed that are described in this document.
#+end_quote
* Test Benches / Experiments
** Amplified Piezoelectric Actuator
- [[file:test-bench-apa/index.org][Amplified Piezoelectric Actuator]]
** Sensor Fusion
- [[file:sensor-fusion-test-bench/index.org][Sensor Fusion]]
** Intrumentation Related
** Encoder and Interferometer
- [[file:encoder-test-bench/index.org][Encoder and Interferometer]]
[[file:test-bench-piezo-amplifiers/index.org][Voltage Amplifiers for Piezoelectric Actuators]]
#+begin_quote
Voltage amplifiers for capacitive loads (piezoelectric actuators) are measured in term of dynamics from input voltage to output voltage.
Their output impedance are also measured.
#+end_quote
** Attocube
- [[file:attocube-test-bench/index.org][Attocube]]
[[file:attocube-test-bench/index.org][Attocube]]
#+begin_quote
The Attocube (a fiber based interferometer) is tested.
Its noise characteristics as well as non-linearities are measured.
#+end_quote
** Voltage Amplifiers for Piezoelectric Actuators
- [[file:test-bench-piezo-amplifiers/index.org][Voltage Amplifiers for Piezoelectric Actuators]]
** Amplified Piezoelecric Actuator
** Metrology Concept 1
- [[file:nass-metrology-test-bench/index.org][Metrology Concept 1]]
[[file:test-bench-apa/index.org][Amplified Piezoelectric Actuator - Test bench and Finite Element Model]]
#+begin_quote
A test bench is used to characterise the performances of an Amplified Piezoelectric Actuator (APA).
The dynamics of the system is identified and compared with a Finite Element Model (FEM).
#+end_quote
** Force Sensor
- [[file:test-bench-force-sensor/index.org][Force Sensor]]
[[file:encoder-test-bench/index.org][Encoder in parallel with an Amplified Piezoelectric Actuator]]
#+begin_quote
An encoder is fixed in parallel with an amplified piezoelectric actuator.
The transfer function from the actuator to the motions measured by the encoder is identified.
#+end_quote
* Nano Active Stabilization System
[[file:test-bench-force-sensor/index.org][Piezoelectric Stack as Force Sensor]]
#+begin_quote
A part of a piezoelectric stack can be used as a force sensor.
Then, the force sensors is collocated with the part of the stack used as an actuator and Integral Force Feedback control strategy can be used to add damping in the system.
This is performed on an Amplified Piezoelectric Actuator
#+end_quote
- [[file:nass-report-2020/index.org][NASS - Report 2020]]
- [[file:nass-micro-station-measurements/index.org][NASS - Micro Station Measurements]]
- [[file:nass-simscape/docs/index.org][NASS - Simscape Model]]
[[file:sensor-fusion-test-bench/index.org][Sensor Fusion of Inertial Sensors]]
#+begin_quote
A geophone and a accelerometer are experimentally fused together using complementary filters.
The goal is to form a /super sensor/ that has better noise characteristics than the individual sensors.
#+end_quote
* PhD Project - Nano Active Stabilization System
[[file:nass-report-2020/index.org][NASS - Report 2020]]
#+begin_quote
General report on the NASS project made in 2020.
#+end_quote
[[file:nass-micro-station-measurements/index.org][NASS - Micro Station Measurements]]
#+begin_quote
This document gathers all the measurements made on the Micro-Station.
#+end_quote
[[file:nass-simscape/docs/index.org][NASS - Simscape Model]]
#+begin_quote
This document presents the Simscape model used to represent the micro-station as well as the Nano Active Stabilization System.
#+end_quote
[[file:nass-fem/index.org][NASS - Finite Element Models]]
#+begin_quote
Finite Element Models of the nano-hexapod are developed and used with Simscape to perform dynamics meaurements.
In this document, models of Amplified Piezoelectric Actuators, Flexible Joints, and Entire Stewart platform's strut are developed and tested.
#+end_quote
[[file:nass-metrology-test-bench/index.org][NASS - Metrology Concept 1]]
#+begin_quote
Presentation of the first metrology concept for the NASS.
First experimental results are presented.
#+end_quote