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< title > Research Pages< / title >
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< meta name = "author" content = "Thomas Dehaeze" / >
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< h1 class = "title" > Research Pages< / h1 >
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Welcome to my research pages.
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< h2 id = "org9479d54" > < span class = "section-number-2" > 1< / span > Papers< / h2 >
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< h3 id = "orgaaf83b2" > < span class = "section-number-3" > 1.1< / span > Conference Papers< / h3 >
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< li > Dehaeze, T., Mattenet, M. M., & Collette, C., < b > Sample Stabilization For Tomography Experiments In Presence Of Large Plant Uncertainty< / b > , In MEDSI’ 18 (pp. 153– < a href = "dehaeze18_sampl_stabil_for_tomog_exper/index.html" > link< / a > )< / li >
< li > Dehaeze, T., Vermat, M., & Christophe, C., < b > Complementary filters shaping using \(H_\infty\) synthesis< / b > , In 7th International Conference on Control, Mechatronics and Automation (ICCMA) (pp. 459– < a href = "dehaeze19_desig_compl_filte/index.html" > link< / a > )< / li >
< li > Dehaeze, T., & Collette, C., < b > Active damping of rotating platforms using Integral Force Feedback< / b > , In Proceedings of the International Conference on Modal Analysis Noise and Vibration Engineering (ISMA) (2020). (< a href = "dehaeze20_activ_dampin_rotat_platf_integ_force_feedb/index.html" > link< / a > )< / li >
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< h3 id = "orga46ad03" > < span class = "section-number-3" > 1.2< / span > Journal Papers< / h3 >
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< li > Verma, M., Dehaeze, T., Zhao, G., Watchi, J., & 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 >
< li > Verma, M., Lafarga, V., Dehaeze, T., & Collette, C., < b > Multi-degree of freedom isolation system with high frequency roll-off for drone camera stabilization< / b > , IEEE Access, (2020). < a href = "http://dx.doi.org/10.1109/ACCESS.2020.3027066" > http://dx.doi.org/10.1109/ACCESS.2020.3027066< / a > (< a href = "personnal-papers/verma20_multi_degree_freed_isolat_system.pdf" > pdf< / a > )< / li >
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< h2 id = "org9fabe66" > < span class = "section-number-2" > 2< / span > Useful Pages / Tutorials< / h2 >
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< h3 id = "org487ef61" > < span class = "section-number-3" > 2.1< / span > General Mechatronics< / h3 >
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< p >
< a href = "spectral-analysis/index.html" > Spectral Analysis< / a >
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Basics of spectral analysis are presented alongside the Matlab codes.
This includes:
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< li > power spectral density< / li >
< li > cumulative power spectrum< / li >
< li > noise budgeting< / li >
< li > … < / li >
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< a href = "filters-matlab-bank/index.html" > Bank of Filters using matlab< / a >
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Several types of linear filters (low pass, high pass, notch, lead, etc.) are presented with the corresponding Matlab code.
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< h3 id = "orga0a5936" > < span class = "section-number-3" > 2.2< / span > System Modeling using Simscape< / h3 >
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< a href = "simscape-fem/index.html" > Finite Element Models with Simscape< / a >
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Finite Element Models (FEM) can be included into Simscape Multi-Body models.
This document presents how to do so.
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< a href = "simscape-gravity/index.html" > Manage Gravity within Simscape< / a >
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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.
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< h2 id = "orgeff9014" > < span class = "section-number-2" > 3< / span > Test Benches / Experiments< / h2 >
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< h3 id = "org0f1d3a2" > < span class = "section-number-3" > 3.1< / span > Intrumentation Related< / h3 >
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< a href = "test-bench-piezo-amplifiers/index.html" > Voltage Amplifiers for Piezoelectric Actuators< / a >
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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.
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< a href = "attocube-test-bench/index.html" > Attocube< / a >
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The Attocube (a fiber based interferometer) is tested.
Its noise characteristics as well as non-linearities are measured.
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< h3 id = "org3f4fbcf" > < span class = "section-number-3" > 3.2< / span > Amplified Piezoelecric Actuator< / h3 >
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< a href = "test-bench-apa/index.html" > Amplified Piezoelectric Actuator - Test bench and Finite Element Model< / a >
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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).
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< a href = "encoder-test-bench/index.html" > Encoder in parallel with an Amplified Piezoelectric Actuator< / a >
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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.
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< a href = "test-bench-force-sensor/index.html" > Piezoelectric Stack as Force Sensor< / a >
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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
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< a href = "sensor-fusion-test-bench/index.html" > Sensor Fusion of Inertial Sensors< / a >
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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.
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< h2 id = "orge3cbd1f" > < span class = "section-number-2" > 4< / span > PhD Project - Nano Active Stabilization System< / h2 >
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< h3 id = "org0a5a43d" > < span class = "section-number-3" > 4.1< / span > General Reports< / h3 >
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< a href = "nass-report-2020/index.html" > NASS - Report 2020< / a >
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General report on the NASS project made in 2020.
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< h3 id = "org87c821b" > < span class = "section-number-3" > 4.2< / span > Measurements, Models and Test Benches< / h3 >
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< a href = "nass-micro-station-measurements/index.html" > NASS - Micro Station Measurements< / a >
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This document gathers all the measurements made on the Micro-Station.
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< a href = "nass-simscape/docs/index.html" > NASS - Simscape Model< / a >
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This document presents the Simscape model used to represent the micro-station as well as the Nano Active Stabilization System.
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< a href = "nass-fem/index.html" > NASS - Finite Element Models< / a >
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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.
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< a href = "nass-metrology-test-bench/index.html" > NASS - Metrology Concept 1< / a >
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Presentation of the first metrology concept for the NASS.
First experimental results are presented.
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< h3 id = "org2ec6bcc" > < span class = "section-number-3" > 4.3< / span > Nano-Hexapod< / h3 >
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< b > Equipments< / b > :
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< li > < a href = "test-bench-pd200/index.html" > Voltage Amplifier: PD200< / a > < / li >
< li > < a href = "test-bench-vionic/index.html" > Encoder: Renishaw Vionic< / a > < / li >
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< li > < a href = "test-bench-nass-flexible-joints/index.html" > Flexible Joints< / a > < / li >
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< li > < a href = "test-bench-apa300ml/index.html" > Amplified Piezoelectric Actuator: APA300ML< / a > < / li >
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< b > Assembly< / b > :
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< li > < a href = "nass-cabling/index.html" > Cabling< / a > < / li >
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< li > < a href = "test-bench-strut-mounting/index.html" > Nano-Hexapod Struts - Assembly< / a > < / li >
< li > Nano-Hexapod - Assembly< / li >
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< b > Nano-Hexapod Test Benches< / b > :
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< li > Modal Analysis< / li >
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< li > < a href = "test-bench-nass-spindle/index.html" > Nano-Hexapod on top of Spindle< / a > < / li >
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< h2 id = "orgd6df063" > < span class = "section-number-2" > 5< / span > Notes< / h2 >
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< li > < a href = "euspen_2020_notes/notes.html" > EUSPEN - 2020 - Notes< / a > < / li >
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< h2 id = "org7183678" > < span class = "section-number-2" > 6< / span > Lectures< / h2 >
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< li > < a href = "lecture-h-infinity/index.html" > H-Infinity - Robust Control< / a > < / li >
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