8000 Add ab04md by KybernetikJo · Pull Request #201 · python-control/Slycot · GitHub
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Merged
merged 8 commits into from
Aug 24, 2023
Merged

Add ab04md #201

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3598ac9
Add ab04md wrapper
KybernetikJo Jul 20, 2023
52cc0f8
Unittest added for ab04md.
KybernetikJo Jul 29, 2023
416b352
Add docstring, Change parameter name from type_bn to type_t
KybernetikJo Jul 29, 2023
6643167
Update slycot/analysis.py
KybernetikJo Aug 7, 2023
fe5c56a
Update docstring (remove input mark from int types)
KybernetikJo Aug 7, 2023
8ad0236
Improve docstring
KybernetikJo Aug 7, 2023
2289d93
Update docstring, minor fixes
KybernetikJo Aug 23, 2023
118bf58
cleanup test file
bnavigator Aug 24, 2023
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Unittest added for ab04md.
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@KybernetikJo
KybernetikJo committed Aug 23, 2023
commit 52cc0f8fae101ee03dd2013bb83e43cc51527a4c
1 change: 1 addition & 0 deletions slycot/tests/CMakeLists.txt
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Expand Up @@ -2,6 +2,7 @@ set(PYSOURCE

__init__.py
test_ab01.py
test_ab04md.py
test_ab08n.py
test_ag08bd.py
test_examples.py
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71 changes: 71 additions & 0 deletions 10000 slycot/tests/test_ab04md.py
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@@ -0,0 +1,71 @@
# ===================================================
# ab08n* tests

import unittest
from slycot import analysis
import numpy as np

from scipy.linalg import eig
from numpy.testing import assert_equal, assert_allclose


class test_ab04md(unittest.TestCase):
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unittest.TestCase not needed

"""Test ab04md.

Example data taken from
https://www.slicot.org/objects/software/shared/doc/AB04MD.html.
"""

Ac = np.array([[1.0, 0.5],
[0.5, 1.0]])
Bc = np.array([[0.0, -1.0],
[1.0, 0.0]])
Cc = np.array([[-1.0, 0.0],
[0.0, 1.0]])
Dc = np.array([[1.0, 0.0],
[0.0, -1.0]])

Ad = np.array([[-1.0, -4.0],
[-4.0, -1.0]])
Bd = np.array([[2.8284, 0.0],
[0.0, -2.8284]])
Cd = np.array([[0.0, 2.8284],
[-2.8284, 0.0]])
Dd = np.array([[-1.0, 0.0],
[0.0, -3.0]])

def test_ab04md_cont_disc_cont(self):
"""Test transformation from continuous - to discrete - to continuous time.
"""

n, m = self.Bc.shape
p = self.Cc.shape[0]

Ad_t, Bd_t, Cd_t, Dd_t = analysis.ab04md('C',n,m,p,self.Ac,self.Bc,self.Cc,self.Dc)

Ac_t, Bc_t, Cc_t, Dc_t = analysis.ab04md('D',n,m,p,Ad_t,Bd_t,Cd_t,Dd_t)

assert_allclose(self.Ac, Ac_t)
assert_allclose(self.Bc, Bc_t)
assert_allclose(self.Cc, Cc_t)
assert_allclose(self.Dc, Dc_t)

def test_ab04md_disc_cont_disc(self):
"""Test transformation from discrete - to continuous - to discrete time.
"""

n, m = self.Bc.shape
p = self.Cc.shape[0]

Ac_t, Bc_t, Cc_t, Dc_t = analysis.ab04md('D',n,m,p,self.Ad,self.Bd,self.Cd,self.Dd)

Ad_t, Bd_t, Cd_t, Dd_t = analysis.ab04md('C',n,m,p,Ac_t,Bc_t,Cc_t,Dc_t)

assert_allclose(self.Ad, Ad_t)
assert_allclose(self.Bd, Bd_t)
assert_allclose(self.Cd, Cd_t)
assert_allclose(self.Dd, Dd_t)


if __name__ == "__main__":
unittest.main()
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