incert_resol_compose_elargie.py

Created by teivaetienne

Created on January 16, 2025

1.26 KB

incertitude de résolution (rectangle, triangle), incertitudes composées (m, V et m/V) incert_resol_et_compose .py


-------Insertitude de répétabilité-------

N = nombre de valeurs
  (ecart-type échantillon)/rac(N)


-------Insertitudes de resolution-------

r = resolution de l'appareil de mesure
m = masse
V = volume

    - LOI TRIANGULAIRES:
  u.res(m)=(r/2)/racine(6)

    - LOI RECTANGULAIRE:
  u.res(V)=(r/2)/racine(3)


-------Insertitudes composees-------

u.rep = incert repetabilitée
u.res = incert resolution
u.m = incert composé de la masse
u.V = incert composé du volume

    -INCERTITUDE COMPOSE SUR LE VOLUME:
  u.m = racine(u.res(m)^2 + u.rep(m)^2)
    -INCERTITUDE COMPOSE SUR LA MASSE:
  u.V = racine(u.res(V)^2 + u.rep(V)^2)
  
  
--Insertitudes composees masse volumiques-------  

rho: le grand P
d: le 6 retourné
u.rho = incert composé m/V   
   
    -INCERTITUDE COMPOSE, EXMPL:m/V
  u.rho = rac((dp/dV)^2 u.V^2 + (dp/dm)^2 u.m^2) 
  u.rho = rac((-M/V^2)^2 u.V^2 + (1/v)^2 u.m^2) 
  
    -Flavien
  rac(u.rep(m)^2 * u.res(m)^2 + u.rep(V)^2 * u.res(V)^2)
  
-------Incertitude élargie-------

U.rho =(Grand U), incertitude élargie
u.rho =(petit u), incertitude composé (m/V)
k = facteur d'élargissement, par exemple si 
 on prend 2, le niveau de confiance sera de
 95% et 99% si on prend 3
   
    -INCERTITUDE ELARGIE:
  U.rho = ku.rho

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