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| import plotly
import math
from plotly.graph_objs import Scatter, Layout
t1 = 0
t2 = 0
t3 = 0
t4 = 0
g = 9.81
c = 12.5
m = 68.1
delta1 = 0.6
delta2 = 1.2
delta3 = 2.4
vel = 0
vel1 = 0
vel2 = 0
vel3 = 0
vel4 = 0
Ti1 = [0]
Ve1 = [0]
Ti2 = [0]
Ve2 = [0]
Ti3 = [0]
Ve3 = [0]
Ti4 = [0]
Ve4 = [0]
def velocity(vel, delta):
value = vel + (g - c * vel / m) * delta
return value
def realsol(t):
Value = 53.44*(1-math.exp(1)**(-0.18355*t))
return Value
def Error1():
Err1 = (realsol(12) - Ve1[20])*100 / realsol(12)
round(Err1, 1)
return Err1
def Error2():
Err2 = (realsol(12) - Ve2[10])*100 / realsol(12)
round(Err2, 1)
return Err2
def Error3():
Err3 = (realsol(12) - Ve3[5])*100 / realsol(12)
round(Err3, 1)
return Err3
for a in range(0, 80):
vel1 = velocity(vel1, delta1)
t1 = t1 + delta1
T1 = round(t1, 1)
VEL1 = round(vel1, 1)
Ti1 = Ti1 + [T1]
Ve1 = Ve1 + [VEL1]
for a in range(0, 40):
vel2 = velocity(vel2, delta2)
t2 = t2 + delta2
T2 = round(t2, 1)
VEL2 = round(vel2, 1)
Ti2 = Ti2 + [T2]
Ve2 = Ve2 + [VEL2]
for a in range(0, 20):
vel3 = velocity(vel3, delta3)
t3 = t3 + delta3
T3 = round(t3, 1)
VEL3 = round(vel3, 1)
Ti3 = Ti3 + [T3]
Ve3 = Ve3 + [VEL3]
for a in range(0, 4800):
vel4 = realsol(t4)
t4 = t4 + 0.01
T4 = round(t4, 1)
VEL4 = round(vel4, 1)
Ti4 = Ti4 + [T4]
Ve4 = Ve4 + [VEL4]
plotly.offline.plot({
"data": [Scatter(x=Ti1, y=Ve1)],
"layout": Layout(title="ODE 풀이, delta = 0.6")
})
plotly.offline.plot({
"data": [Scatter(x=Ti2, y=Ve2)],
"layout": Layout(title="ODE 풀이, delta = 1.2")
})
plotly.offline.plot({
"data": [Scatter(x=Ti3, y=Ve3)],
"layout": Layout(title="ODE 풀이, delta = 2.4")
})
plotly.offline.plot({
"data": [Scatter(x=Ti4, y=Ve4)],
"layout": Layout(title="ODE 풀이, realsol")
})
print(Error1())
print(Error2())
print(Error3())
|
