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Dans le document en fr (Page 77-200)

calibration d'un capteur à ultrasons avant essai calibration d'un capteur à ultrasons après essai

0 5 10 15 20 25 30 35 40 45 50 55 60 65 24.0

24.5 25.0 25.5 26.0 26.5 27.0

kaol008

u 6 = 0.202 m.s -1

H(mm)

t(s) H1u6

H2u6 H3u6 H1 H2 H3

e = e 1 + e 2 + e 3

e 1

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 21.0

21.1 21.2 21.3 21.4 21.5 21.6 21.7 21.8 21.9 22.0

u 7 = 0.201 m.s -1 carb011

H(mm)

t(s) H3u7

H2u7 H2 H3

±

θ

ρ

H 1

H 2

H 3

H opt

H 1

H 2

H 3

d

ρ

− 3

τ c

n

n l

θ ◦ u b

− 1

H H N

H opt

H opt

H opt

H opt

H opt

H opt

H opt

H opt,2

H opt,2

H opt

H opt, 2 , 3

H opt,2,3

H 2,3

ρ

τ c

k

n

l

θ

H

u b

H N

ρ

− 3

τ c

n

n l

θ ◦ u b

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H H N

H 2,3

H 1,2,3

H 1 , 2 , 3

H 1,2,3

H 1,2,3

H 1,2,3

H 1 , 2 , 3

H 1,2,3

H 1,2,3

H 1 , 2 , 3

H 1,2,3

H 1,2,3

H 1 , 2 , 3

H 1,2,3

H 1,2,3

u 6 = 0.202 m.s ^-1

e = e ₁ + e ₂ + e ₃

e ₁

u 7 = 0.201 m.s ^-1 carb011

H ₁

H ₁

H ₂

H ₃

⁻ ³

τ _c

ⁿ

θ ^◦ u _b

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H _opt,2,3

u _b

H _N

⁻ ³

θ ^◦ u b

⁻ ¹

^H H N

H _1,2,3

H _1,2,3

τ _c

u _b

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H _N

H _N

H ₁

H ₂

H ₃

H _N

u _b

^◦

^◦

H _N

u _b

H _N

u _b

u _b

G = ^ρgH ^N _τ _c ^sin ^θ [3.09; 7.62] [2.88; 12.98]

H _b = ^τ _k ^c ^H _u ^N

_n

F _r = √ ^u ^b

H _b

x _i

∆x _i

∆f = Σ _i _∂x ^∂f

∆x _i

H _N

u _b

u _b

H _N

u _b

H _b