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// ==UserScript== | |
// @name Aliexpress_orders_ohuf | |
// @namespace http://tampermonkey.net/ | |
// @version 2 | |
// @description extract Aliexpress orders in a sensible way | |
// @author ohuf | |
// @match https://trade.aliexpress.com/orderList.htm* | |
// @grant unsafeWindow | |
// @grant GM_xmlhttpRequest | |
// @grant GM_setClipboard |
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estimation proportion | |
Pn=p0=/x=somme(xi/)/n | |
p proche p réel si grand n | |
estimation moyenne m=E(x) | |
/x=somme(xi)/n | |
/X proche de m si n grand | |
Ecarttype echantillon a use |
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Question 4 | |
4.a, Le comptage va commencer quand il y a un signal Echo de perçu, il s'arrête de compter quand il n'y a plus. | |
La vitesse de comptage se fait à une période de 10µs vu que c'est l'horloge qui est connecté. | |
n c'est le nombre du compteur. | |
4.b, Le compteur va faire le calcul de la distance avec n d'où n*p/q, la distance est en centimètre. | |
4.c La distance max est 2.5m, soit 250cm, il faut stocker un nombre allant jusqu'Ã 250, soit un bus de 8 bits (monte jusqu'Ã 255) | |
4.d s_dist va prendre les 8 bits de poids faible du signal s_d | |
Question 5 | |
library ieee; |
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PLL = | |
Passe bas + | |
comparateur phase + | |
VCO + | |
Suiveur | |
Kd = Vc/pi (gain comparateur phase) | |
hz -> rad.s^-1 -> rad | |
*2pi *1/p |
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from math import * |
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Vmag = Veff | |
THDfond = sqr(sum(In^2))/I1 | |
= sqr(I^2-I1^2-I0^2)/I1 | |
Indu : | |
(L + R) // Cpad | |
Condo : | |
Lpad + R + C | |
Res : | |
L + (Cpad // R // Cfuite) |
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<Uh> = 1/t * integrale(ut) | |
<Uh> = Vs(2£-1) | |
(a utilisé pour savoir quand | |
tension positive) | |
Uh = Ldi/dt + Ua | |
<Uh> = Ua | |
Tension moyenne induc = 0 | |
Ldi/dt = Vs - Ua |
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CC - AC | |
<i> = 0 dans certaine situation | |
ieff = rcin(<i²>) | |
i² = E²/R² | |
P = UI = RI² | |
i = E/R (graph) | |
ik1 = ik2 | |
ig = ik1+ik2 |
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F(p)*e^(-to*p) | |
F(p) = somme de signaux simples | |
retardés si possible | |
G static = | |
Valeur en régim permenant | |
Poles = | |
p qui annule déno |
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# This comment was added automatically to allow this file to save. | |
# You'll be able to remove it after adding text to the file. | |
to = L/Vc | |
Zc = sqr(l/c) | |
l = inductance | |
c = condo | |
Vc = 1/sqr(l*c) | |
= c/sqr(Er) |
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