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toolbox
WindEnergyToolbox
Commits
00c83d7a
Commit
00c83d7a
authored
6 years ago
by
Mads M. Pedersen
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test similar to matlab test at
https://se.mathworks.com/help/signal/ref/rainflow.html
parent
694dc264
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1 merge request
!75
test similar to matlab test at https://se.mathworks.com/help/signal/ref/rainflow.html
Pipeline
#5707
passed
6 years ago
Stage: test
Changes
1
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1 changed file
wetb/fatigue_tools/tests/test_fatigue.py
+51
-32
51 additions, 32 deletions
wetb/fatigue_tools/tests/test_fatigue.py
with
51 additions
and
32 deletions
wetb/fatigue_tools/tests/test_fatigue.py
+
51
−
32
View file @
00c83d7a
...
...
@@ -21,6 +21,7 @@ import os
testfilepath
=
os
.
path
.
join
(
os
.
path
.
dirname
(
__file__
),
'
test_files/
'
)
# test file path
class
TestFatigueTools
(
unittest
.
TestCase
):
def
test_leq_1hz
(
self
):
...
...
@@ -31,26 +32,26 @@ class TestFatigueTools(unittest.TestCase):
m
=
1
point_per_deg
=
100
for
amplitude
in
[
1
,
2
,
3
]:
for
amplitude
in
[
1
,
2
,
3
]:
peak2peak
=
amplitude
*
2
# sine signal with 10 periods (20 peaks)
nr_periods
=
10
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
neq
=
time
[
-
1
]
# mean value of the signal shouldn't matter
signal
=
amplitude
*
np
.
sin
(
time
)
+
5
r_eq_1hz
=
eq_load
(
signal
,
no_bins
=
1
,
m
=
m
,
neq
=
neq
)[
0
]
r_eq_1hz_expected
=
((
2
*
nr_periods
*
amplitude
**
m
)
/
neq
)
**
(
1
/
m
)
r_eq_1hz_expected
=
((
2
*
nr_periods
*
amplitude
**
m
)
/
neq
)
**
(
1
/
m
)
np
.
testing
.
assert_allclose
(
r_eq_1hz
,
r_eq_1hz_expected
)
# sine signal with 20 periods (40 peaks)
nr_periods
=
20
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
neq
=
time
[
-
1
]
# mean value of the signal shouldn't matter
signal
=
amplitude
*
np
.
sin
(
time
)
+
9
r_eq_1hz2
=
eq_load
(
signal
,
no_bins
=
1
,
m
=
m
,
neq
=
neq
)[
0
]
r_eq_1hz_expected2
=
((
2
*
nr_periods
*
amplitude
**
m
)
/
neq
)
**
(
1
/
m
)
r_eq_1hz_expected2
=
((
2
*
nr_periods
*
amplitude
**
m
)
/
neq
)
**
(
1
/
m
)
np
.
testing
.
assert_allclose
(
r_eq_1hz2
,
r_eq_1hz_expected2
)
# 1hz equivalent should be independent of the length of the signal
...
...
@@ -66,46 +67,44 @@ class TestFatigueTools(unittest.TestCase):
point_per_deg
=
100
nr_periods
=
10
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
time
=
np
.
linspace
(
0
,
nr_periods
*
2
*
np
.
pi
,
point_per_deg
*
180
)
signal
=
(
amplitude
*
np
.
sin
(
time
))
+
5
+
(
amplitude
*
0.2
*
np
.
cos
(
5
*
time
))
signal
=
(
amplitude
*
np
.
sin
(
time
))
+
5
+
(
amplitude
*
0.2
*
np
.
cos
(
5
*
time
))
cycles
,
ampl_bin_mean
,
ampl_edges
,
mean_bin_mean
,
mean_edges
=
\
cycle_matrix
(
signal
,
ampl_bins
=
10
,
mean_bins
=
5
)
cycles
.
sum
()
def
test_astm1
(
self
):
signal
=
np
.
array
([
-
2.0
,
0.0
,
1.0
,
0.0
,
-
3.0
,
0.0
,
5.0
,
0.0
,
-
1.0
,
0.0
,
3.0
,
0.0
,
-
4.0
,
0.0
,
4.0
,
0.0
,
-
2.0
])
ampl
,
mean
=
rainflow_astm
(
signal
)
np
.
testing
.
assert_array_equal
(
np
.
histogram2d
(
ampl
,
mean
,
[
6
,
4
])[
0
],
np
.
array
([[
0.
,
1.
,
0.
,
0.
],
[
1.
,
0.
,
0.
,
2.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
0.
,
1.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
1.
,
2.
]]))
np
.
testing
.
assert_array_equal
(
np
.
histogram2d
(
ampl
,
mean
,
[
6
,
4
])[
0
],
np
.
array
([[
0.
,
1.
,
0.
,
0.
],
[
1.
,
0.
,
0.
,
2.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
0.
,
1.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
1.
,
2.
]]))
def
test_windap1
(
self
):
signal
=
np
.
array
([
-
2.0
,
0.0
,
1.0
,
0.0
,
-
3.0
,
0.0
,
5.0
,
0.0
,
-
1.0
,
0.0
,
3.0
,
0.0
,
-
4.0
,
0.0
,
4.0
,
0.0
,
-
2.0
])
ampl
,
mean
=
rainflow_windap
(
signal
,
18
,
2
)
np
.
testing
.
assert_array_equal
(
np
.
histogram2d
(
ampl
,
mean
,
[
6
,
4
])[
0
],
np
.
array
([[
0.
,
0.
,
1.
,
0.
],
[
1.
,
0.
,
0.
,
2.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
0.
,
1.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
2.
,
1.
]]))
np
.
testing
.
assert_array_equal
(
np
.
histogram2d
(
ampl
,
mean
,
[
6
,
4
])[
0
],
np
.
array
([[
0.
,
0.
,
1.
,
0.
],
[
1.
,
0.
,
0.
,
2.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
0.
,
1.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
0.
,
2.
,
1.
]]))
def
test_windap2
(
self
):
data
=
Hawc2io
.
ReadHawc2
(
testfilepath
+
"
test
"
).
ReadBinary
([
2
]).
flatten
()
np
.
testing
.
assert_allclose
(
eq_load
(
data
,
neq
=
61
),
np
.
array
([[
1.356
,
1.758
,
2.370
,
2.784
,
3.077
,
3.296
]]),
0.01
)
def
test_astm2
(
self
):
data
=
Hawc2io
.
ReadHawc2
(
testfilepath
+
"
test
"
).
ReadBinary
([
2
]).
flatten
()
np
.
testing
.
assert_allclose
(
eq_load
(
data
,
neq
=
61
,
rainflow_func
=
rainflow_astm
),
np
.
array
([[
1.356
,
1.758
,
2.370
,
2.784
,
3.077
,
3.296
]]),
0.01
)
np
.
testing
.
assert_allclose
(
eq_load
(
data
,
neq
=
61
,
rainflow_func
=
rainflow_astm
),
np
.
array
([[
1.356
,
1.758
,
2.370
,
2.784
,
3.077
,
3.296
]]),
0.01
)
# def test_windap3(self):
...
...
@@ -118,20 +117,40 @@ class TestFatigueTools(unittest.TestCase):
# [ 0., 0., 0., 0.],
# [ 0., 1., 2., 0.]]) / 2)
def
test_astm3
(
self
):
data
=
Hawc2io
.
ReadHawc2
(
testfilepath
+
"
test
"
).
ReadBinary
([
2
]).
flatten
()
np
.
testing
.
assert_allclose
(
cycle_matrix
(
data
,
4
,
4
,
rainflow_func
=
rainflow_astm
)[
0
],
np
.
array
([[
24.
,
83.
,
53.
,
26.
],
[
0.
,
1.
,
4.
,
0.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
1.
,
2.
,
0.
]])
/
2
,
0.001
)
np
.
testing
.
assert_allclose
(
cycle_matrix
(
data
,
4
,
4
,
rainflow_func
=
rainflow_astm
)[
0
],
np
.
array
([[
24.
,
83.
,
53.
,
26.
],
[
0.
,
1.
,
4.
,
0.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
1.
,
2.
,
0.
]])
/
2
,
0.001
)
def
test_astm_weighted
(
self
):
data
=
Hawc2io
.
ReadHawc2
(
testfilepath
+
"
test
"
).
ReadBinary
([
2
]).
flatten
()
np
.
testing
.
assert_allclose
(
cycle_matrix
([(
1
,
data
),(
1
,
data
)],
4
,
4
,
rainflow_func
=
rainflow_astm
)[
0
],
np
.
array
([[
24.
,
83.
,
53.
,
26.
],
[
0.
,
1.
,
4.
,
0.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
1.
,
2.
,
0.
]])
,
0.001
)
np
.
testing
.
assert_allclose
(
cycle_matrix
([(
1
,
data
),
(
1
,
data
)],
4
,
4
,
rainflow_func
=
rainflow_astm
)[
0
],
np
.
array
([[
24.
,
83.
,
53.
,
26.
],
[
0.
,
1.
,
4.
,
0.
],
[
0.
,
0.
,
0.
,
0.
],
[
0.
,
1.
,
2.
,
0.
]]),
0.001
)
def
test_astm_matlab_example
(
self
):
# example from https://se.mathworks.com/help/signal/ref/rainflow.html
fs
=
512
X
=
np
.
array
([
-
2
,
1
,
-
3
,
5
,
-
1
,
3
,
-
4
,
4
,
-
2
])
Y
=
-
np
.
diff
(
X
)[:,
np
.
newaxis
]
/
2.
*
np
.
cos
(
np
.
pi
*
np
.
arange
(
0
,
1
,
1
/
fs
))[
np
.
newaxis
]
+
((
X
[:
-
1
]
+
X
[
1
:])
/
2
)[:,
np
.
newaxis
]
Y
=
np
.
r_
[
Y
.
flatten
(),
X
[
-
1
]]
range_lst
,
mean_lst
=
(
rainflow_astm
(
Y
))
np
.
testing
.
assert_array_equal
(
range_lst
,
[
3
,
4
,
4
,
4
,
8
,
9
,
8
,
6
])
np
.
testing
.
assert_array_equal
(
mean_lst
,
[
-
.
5
,
-
1
,
1
,
1
,
1
,
.
5
,
0
,
1
])
if
0
:
import
matplotlib.pyplot
as
plt
plt
.
plot
(
np
.
arange
(
0
,
len
(
X
)
-
1
+
1
/
fs
,
1
/
fs
),
Y
)
plt
.
plot
(
np
.
arange
(
len
(
X
)),
X
,
'
o
'
)
plt
.
show
()
if
__name__
==
"
__main__
"
:
#import sys;sys.argv = ['', 'Test.testName']
...
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