Add detailed outline

2024-11-08 16:15:12 +01:00 · 2024-11-08 16:15:12 +01:00 · 06ec295a68
commit 06ec295a68
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2 changed files with 120 additions and 22 deletions
--- a/.gitignore
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-mat/
-figures/
 ltximg/
 slprj/
 matlab/slprj/
--- a/nass-instrumentation.org
+++ b/nass-instrumentation.org
@ -96,20 +96,69 @@
 #+END_SRC

 * Notes                                                             :noexport:
+** Notes
+
+Prefix is =instrumentation=

 Compilation of the following reports:
 - [ ] [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-PD200/test-bench-pd200.org][test-bench-PD200]] and [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-piezo-amplifiers/index.org][test-bench-piezo-amplifiers]] (but less useful)
 - [ ] [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-vionic/test-bench-vionic.org][test-bench-vionic]]
 - [ ] [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-attocube/test-bench-attocube.org][test-bench-attocube]]
+- [ ] [[file:~/Cloud/work-projects/ID31-NASS/matlab/nass-simscape/org/noise_budgeting.org][file:~/Cloud/work-projects/ID31-NASS/matlab/nass-simscape/org/noise_budgeting.org]] for the maximum allowed noise of the relative motion sensors
 - [ ] DAC, ADC, Control system
 - [ ] Reading of the force sensor: ADC + [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-force-sensor/test-bench-force-sensor.org][test-bench-force-sensor]]
  Electrical characteristics of the APA force sensor

+** TODO [#C] Noise budgeting to have specifications
+
+Simplified model (uniaxial?)
+From maximum induced vibration, and estimated bandwidth (S and T), estimate the maximum:
+- Actuator noise (i.e DAC + voltage amplifier)
+- force sensor noise (i.e. ADC) + encoder noise?
+- external metrology noise? (not very relevant, maybe this should be assumed, similar to Attocube noise [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-attocube/test-bench-attocube.org][test-bench-attocube]])
+
+=> *Specifications*
+
+And specifications in terms of bandwidth, voltage ranges, etc...
+
+** TODO [#C] Find instrumentation that meet such specification
+
+How to read force sensor, etc...
+
+** TODO [#C] Characterization of received instruments and compare with specifications
+
+Test benches to characterize instruments
+
+- [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-PD200/test-bench-pd200.org][test-bench-PD200]]
+- [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-force-sensor/test-bench-force-sensor.org][test-bench-force-sensor]]
+
+** TODO [#C] Perform rigorous noise budgeting
+
+Sources:
+- ADC: measured
+- PD200: measured
+- Encoder: measured
+- ADC (force sensors): measured
+- Ground motion: estimated
+
+By taking into account all those sources, we should be able to do a noise budgeting and compare with the obtain measurements.
+
+We need the following transfer functions:
+- from ground motion (x,y,z) to strut motion (1 to 6) => Simscape
+- from DAC voltage to strut motion => identified FRF
+- from PD200 voltage to strut motion => identified FRF
+- from ADC noise to strut motion => identified FRF + Controller (closed-loop)
+
 * Introduction                                                        :ignore:

-
 The goal is to show that each element in the system has been properly chosen based on certain requirements.

+In order to determine the maximum noise of each instrumentation, a dynamic error budgeting is performed in Section ref:sec:instrumentation_dynamic_error_budgeting.
+
+The required instrumentation are then selected based on obtained noise specifications and other requirements summarized in Section ref:sec:instrumentation_choice.
+
+The received instrumentation are characterized in Section ref:sec:instrumentation_characterization.
+
 #+name: tab:instrumentation_section_matlab_code
 #+caption: Report sections and corresponding Matlab files
 #+attr_latex: :environment tabularx :width 0.6\linewidth :align lX
@ -119,33 +168,84 @@ The goal is to show that each element in the system has been properly chosen bas
 | Section ref:sec:instrumentation_ | =instrumentation_1_.m= |


-* Digital to Analog converters
+* Dynamic Error Budgeting
 :PROPERTIES:
-:HEADER-ARGS:matlab+: :tangle matlab/instrumentation_1_.m
+:HEADER-ARGS:matlab+: :tangle matlab/instrumentation_1_dynamic_error_budgeting.m
 :END:
-<<sec:instrumentation_dac>>
+<<sec:instrumentation_dynamic_error_budgeting>>
 ** Introduction                                                      :ignore:

-** 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
+*Goal*: get maximum noise of instrumentation

-#+begin_src matlab :exports none :results silent :noweb yes
-<<matlab-init>>
-#+end_src
+*Procedure*:
+- Get closed-loop transfer functions from noises to positioning error
+  Need the multi-body model with controllers
+- Suppose a maximum error ASD.
+  Suppose flat ASD, bandwidth of ~200Hz, maximum RMS of ~10nmRMS => x nm/sqrt(Hz)
+- Deduce the maximum ASD of the noise sources

-#+begin_src matlab :tangle no :noweb yes
-<<m-init-path>>
-#+end_src
+Have a look at his report: [[file:~/Cloud/work-projects/ID31-NASS/matlab/nass-simscape/org/noise_budgeting.org][file:~/Cloud/work-projects/ID31-NASS/matlab/nass-simscape/org/noise_budgeting.org]]

-#+begin_src matlab :eval no :noweb yes
-<<m-init-path-tangle>>
-#+end_src
+** Estimation of the online metrology noise

-#+begin_src matlab :noweb yes
-<<m-init-other>>
-#+end_src
+[[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-attocube/test-bench-attocube.org][test-bench-attocube]]
+
+** Closed-Loop transfer functions
+
+
+** Estimation of maximum instrumentation noise
+
+- Output the maximum instrumentation noise ASD in =.mat= files (that will be used to compare with the obtained instrumentations)
+
+* Choice of Instrumentation
+:PROPERTIES:
+:HEADER-ARGS:matlab+: :tangle matlab/instrumentation_2_choice.m
+:END:
+<<sec:instrumentation_choice>>
+** Introduction                                                      :ignore:
+
+In previous section: noise characteristics.
+In this section, other characteristics (range, bandwidth, etc...)
+
+ADC, DAC, Voltage amplifier, Encoder
+
+*Model of each instrument* (transfer function + noise source).
+
+In this section, also tell which instrumentation has been bought.
+
+** Piezoelectric Voltage Amplifier
+
+Capacitance of the piezoelectric actuator
+
+** ADC
+
+Talk about input impedance, ...
+Add resistor, reading of the force sensor: ADC + [[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-force-sensor/test-bench-force-sensor.org][test-bench-force-sensor]]
+
+* Characterization of Instrumentation
+:PROPERTIES:
+:HEADER-ARGS:matlab+: :tangle matlab/instrumentation_3_characterization.m
+:END:
+<<sec:instrumentation_characterization>>
+** Introduction                                                      :ignore:
+
+For each element, make a table with the specifications, and the measured performances for comparison.
+
+** Analog to Digital Converters
+
+[[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-PD200/test-bench-pd200.org::*Quantization Noise of the ADC][Quantization Noise of the ADC]]
+
+** Digital to Analog Converters
+
+[[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-PD200/test-bench-pd200.org::*16bits DAC noise measurement][16bits DAC noise measurement]]
+
+** Piezoelectric Voltage Amplifier
+
+[[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-PD200/test-bench-pd200.org][test-bench-PD200]]
+
+** Linear Encoders
+
+[[file:~/Cloud/work-projects/ID31-NASS/matlab/test-bench-vionic/test-bench-vionic.org][test-bench-vionic]]

 * Conclusion
 <<sec:instrumentation_conclusion>>