step ınfo

Busra Akdag — Sun, 03 Jul 2022 16:00:01 -0000

Hello,
Can I ask question about step_info in https://github.com/python-control/python-control/blob/main/control/timeresp.py

According to this link
sys = TransferFunction([-1, 1], [1, 1, 1])
S = step_info(sys)
for k in S:
print(f"{k}: {S[k]:3.4}")

How is the transfer function S[k] in the for loop determined?
For example, what would S[k] be if my system was sys = TransferFunction(2, [1, 1, 2])
or how can I get information of stepinfo from the system

How to calculate the transfer function of a block diagram with Python Control Library?

Lucas Vizzotto Bellinaso — Wed, 13 Jan 2021 11:57:20 -0000

Hello, I just signed up in this community. I teach control systems in Federal University of Santa Maria (Brazil). I teach a computational solution for solving block diagrams. It is not in the Control Package yet. If you understand or can translate from portuguese, here is the solution:
https://colab.research.google.com/drive/1_tOSk_abTRI0Eh2x292nnjjWY5EuiGT1
My class in Youtube (Portuguese): https://www.youtube.com/watch?v=SPf44CqArd0

How to calculate the transfer function of a block diagram with Python Control Library?

Lucas Gagneten — Fri, 20 Jul 2018 12:50:52 -0000

Hello, I have the following Block Diagram:

I would like to know, how to use Python Control Library to obtain the transfer function from this block diagram.
Thank you for your help.

SciPy and SciKits

Thomas Haslwanter — Sat, 26 Mar 2016 21:29:12 -0000

I think an active control system toolkit would be immensely valuable for the scientific and engineering popularity of Python. I also agree that "control" is too large/specialized to be incorporated into scipy.signal. As I see it, the current definitions (e.g. of "transfer functions - tf") of scipy.signal and of the "control" package are incompatible, and an incorporation of "control" into a scipy.signal compatable format ("scikits-control") would be much appreciated.
If Richard Murray agrees (and supports it), I might be able to come up with some manpower for such a project. Please let me know what you think about it.

Specifying bode_plot range of frequencies

Esteban — Sat, 30 Jan 2016 02:53:12 -0000

Answer: use numpy.arange()

Specifying bode_plot range of frequencies

Esteban — Mon, 25 Jan 2016 22:27:02 -0000

Hello,

I would like to know how to set the lower and upper limits of the frequency range in bode_plot() .
I'm new to Python. I tried using the range() function, as well as other syntax, without success.

Thank you.

Regards,

Esteban

Problem importing library: 'module' has no attribute 'tf'

Matthew Kennedy — Tue, 27 Oct 2015 16:43:35 -0000

Thanks for the response!

Using Ipython I am able to generate the Root locus plots. Yay!

Found out what my issue was: The filename I used for testing out the library was titled 'control.py'. so "import control as cnt" was simply importing the file into itself...

The script will compile now but won't display a graph but that shouldn't be to hard to figure out.

Thanks again for your response and for writing this sweet library.

Problem importing library: 'module' has no attribute 'tf'

Richard Murray — Sun, 25 Oct 2015 17:11:56 -0000

Not sure why things are not working in the script. Is the python-control package installed in the system directory (this would be the default, but usually requires root priviledge) or in your user directory? Perhaps there is something in that path that works different in command line versus interactive mode?

In terms of running things interactively, you need to run python in a way that supports graphical output. The easiest way to do that is to use 'ipython -pylab' rather than just 'python'. ipython is an interactive version of python and the -pylab option tells it to load up the right graphics packages (mainly matplotlib, I think). I ran the commands you listed and got the attached (graphical) output.

Problem importing library: 'module' has no attribute 'tf'

Matthew Kennedy — Sun, 25 Oct 2015 16:42:19 -0000

Hey,

I had a question about how to get python-control library up and running. I'm a mechanical engineering student studying controls and I would love to be able to do my work in python so I don't have to buy matlab.

Problem
I can't get the control library to import and compile in my script but I can import the library when in terminal but certain commands don't work properly.

import control as cnt

sys = cnt.tf([1,5],[1,3,2,0])

When I run python through the terminal I can import the library just fine, but the rlocus command doesn't return a plot.

import control as cnt
sys = cnt.tf([1,5],[1,3,2,0])
cnt.rlocus(sys)
(array([[ -2.00149589e+00 +0.j , -9.95995932e-01 +0.j ,
-2.50817443e-03 +0.j ],
[ -2.00198136e+00 +0.j , -9.94689965e-01 +0.j ,
-3.32867365e-03 +0.j ],
[ -2.00262363e+00 +0.j , -9.92957230e-01 +0.j ,
-4.41914331e-03 +0.j ],
[ -2.00347277e+00 +0.j , -9.90657610e-01 +0.j ,
-5.86961909e-03 +0.j ],
[ -2.00459446e+00 +0.j , -9.87604433e-01 +0.j ,
-7.80110937e-03 +0.j ],
[ -2.00607447e+00 +0.j , -9.83548520e-01 +0.j ,
-1.03770058e-02 +0.j ],
[ -2.00802439e+00 +0.j , -9.78156293e-01 +0.j ,
-1.38193191e-02 +0.j ],
[ -2.01058842e+00 +0.j , -9.70979274e-01 +0.j ,
-1.84323083e-02 +0.j ],
[ -2.01395155e+00 +0.j , -9.61410535e-01 +0.j ,
-2.46379146e-02 +0.j ],
[ -2.01834869e+00 +0.j , -9.48620276e-01 +0.j ,
-3.30310380e-02 +0.j ],
[ -2.02407432e+00 +0.j , -9.31455252e-01 +0.j ,
-4.44704322e-02 +0.j ],
[ -2.03149171e+00 +0.j , -9.08269091e-01 +0.j ,
-6.02391993e-02 +0.j ],
[ -2.04104005e+00 +0.j , -8.76602367e-01 +0.j ,
-8.23575832e-02 +0.j ],
[ -2.05323736e+00 +0.j , -8.32475884e-01 +0.j ,
-1.14286760e-01 +0.j ],
[ -2.06867685e+00 +0.j , -7.68403377e-01 +0.j ,
-1.62919774e-01 +0.j ],
[ -2.08801476e+00 +0.j , -6.64566411e-01 +0.j ,
-2.47418829e-01 +0.j ],
[ -2.11194900e+00 +0.j , -4.44025498e-01 +0.13547235j,
-4.44025498e-01 -0.13547235j],
[ -2.14119022e+00 +0.j , -4.29404889e-01 +0.31211473j,
-4.29404889e-01 -0.31211473j],
[ -2.17642905e+00 +0.j , -4.11785477e-01 +0.44494365j,
-4.11785477e-01 -0.44494365j],
[ -2.21830469e+00 +0.j , -3.90847657e-01 +0.57034623j,
-3.90847657e-01 -0.57034623j],
[ -2.26737946e+00 +0.j , -3.66310269e-01 +0.6970401j ,
-3.66310269e-01 -0.6970401j ],
[ -2.32412173e+00 +0.j , -3.37939137e-01 +0.82929677j,
-3.37939137e-01 -0.82929677j],
[ -2.38889672e+00 +0.j , -3.05551642e-01 +0.97002418j,
-3.05551642e-01 -0.97002418j],
[ -2.46196261e+00 +0.j , -2.69018695e-01 +1.12166375j,
-2.69018695e-01 -1.12166375j],
[ -2.54346804e+00 +0.j , -2.28265982e-01 +1.28655803j,
-2.28265982e-01 -1.28655803j],
[ -2.63344762e+00 +0.j , -1.83276188e-01 +1.46714306j,
-1.83276188e-01 -1.46714306j],
[ -2.73181320e+00 +0.j , -1.34093398e-01 +1.66607344j,
-1.34093398e-01 -1.66607344j],
[ -2.83833945e+00 +0.j , -8.08302742e-02 +1.88632145j,
-8.08302742e-02 -1.88632145j],
[ -2.95264400e+00 +0.j , -2.36780004e-02 +2.13126951j,
-2.36780004e-02 -2.13126951j],
[ -3.07416297e+00 +0.j , 3.70814855e-02 +2.40480651j,
3.70814855e-02 -2.40480651j],
[ -3.20212394e+00 +0.j , 1.01061968e-01 +2.71143481j,
1.01061968e-01 -2.71143481j],
[ -3.33551935e+00 +0.j , 1.67759674e-01 +3.05639328j,
1.67759674e-01 -3.05639328j],
[ -3.47308494e+00 +0.j , 2.36542469e-01 +3.44580028j,
2.36542469e-01 -3.44580028j],
[ -3.61328897e+00 +0.j , 3.06644486e-01 +3.88682015j,
3.06644486e-01 -3.88682015j],
[ -3.75433990e+00 +0.j , 3.77169948e-01 +4.38785551j,
3.77169948e-01 -4.38785551j],
[ -3.89422065e+00 +0.j , 4.47110326e-01 +4.95876619j,
4.47110326e-01 -4.95876619j],
[ -4.03075727e+00 +0.j , 5.15378635e-01 +5.61111365j,
5.15378635e-01 -5.61111365j],
[ -4.16172588e+00 +0.j , 5.80862938e-01 +6.35842753j,
5.80862938e-01 -6.35842753j],
[ -4.28499502e+00 +0.j , 6.42497508e-01 +7.21648951j,
6.42497508e-01 -7.21648951j],
[ -4.39868964e+00 +0.j , 6.99344821e-01 +8.20363039j,
6.99344821e-01 -8.20363039j],
[ -4.50135177e+00 +0.j , 7.50675883e-01 +9.34104011j,
7.50675883e-01 -9.34104011j],
[ -4.59206571e+00 +0.j , 7.96032856e-01+10.65309887j,
7.96032856e-01-10.65309887j],
[ -4.67051854e+00 +0.j , 8.35259271e-01+12.1677475j ,
8.35259271e-01-12.1677475j ],
[ -4.73698047e+00 +0.j , 8.68490235e-01+13.91692366j,
8.68490235e-01-13.91692366j],
[ -4.79221141e+00 +0.j , 8.96105703e-01+15.93709384j,
8.96105703e-01-15.93709384j],
[ -4.83731904e+00 +0.j , 9.18659519e-01+18.26990743j,
9.18659519e-01-18.26990743j],
[ -4.87360242e+00 +0.j , 9.36801210e-01+20.96299174j,
9.36801210e-01-20.96299174j],
[ -4.90241127e+00 +0.j , 9.51205633e-01+24.07089972j,
9.51205633e-01-24.07089972j],
[ -4.92503918e+00 +0.j , 9.62519588e-01+27.65621911j,
9.62519588e-01-27.65621911j],
[ -4.94265590e+00 +0.j , 9.71327951e-01+31.79085406j,
9.71327951e-01-31.79085406j]]), array([ 1.00000000e-03, 1.32571137e-03, 1.75751062e-03,
2.32995181e-03, 3.08884360e-03, 4.09491506e-03,
5.42867544e-03, 7.19685673e-03, 9.54095476e-03,
1.26485522e-02, 1.67683294e-02, 2.22299648e-02,
2.94705170e-02, 3.90693994e-02, 5.17947468e-02,
6.86648845e-02, 9.10298178e-02, 1.20679264e-01,
1.59985872e-01, 2.12095089e-01, 2.81176870e-01,
3.72759372e-01, 4.94171336e-01, 6.55128557e-01,
8.68511374e-01, 1.15139540e+00, 1.52641797e+00,
2.02358965e+00, 2.68269580e+00, 3.55648031e+00,
4.71486636e+00, 6.25055193e+00, 8.28642773e+00,
1.09854114e+01, 1.45634848e+01, 1.93069773e+01,
2.55954792e+01, 3.39322177e+01, 4.49843267e+01,
5.96362332e+01, 7.90604321e+01, 1.04811313e+02,
1.38949549e+02, 1.84206997e+02, 2.44205309e+02,
3.23745754e+02, 4.29193426e+02, 5.68986603e+02,
7.54312006e+02, 1.00000000e+03]))

A python application starts up but doesn't have any windows.

I'm on Mac Yosemite, installed python-control via pip, and I've ran the setup.py test, results below:

Test Output
Matthews-MBP:control-0.7.0 Marek$ python setup.py test
running test
running egg_info
writing requirements to control.egg-info/requires.txt
writing control.egg-info/PKG-INFO
writing top-level names to control.egg-info/top_level.txt
writing dependency_links to control.egg-info/dependency_links.txt
reading manifest file 'control.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'tests/*.py'
writing manifest file 'control.egg-info/SOURCES.txt'
running build_ext
testSSSS1 (control.tests.bdalg_test.TestFeedback)
State space system with state space feedback block. ... ok
testSSSS2 (control.tests.bdalg_test.TestFeedback)
State space system with state space feedback block, including a ... ok
testSSScalar (control.tests.bdalg_test.TestFeedback)
State space system with scalar feedback block. ... ok
testSSTF (control.tests.bdalg_test.TestFeedback)
State space system with transfer function feedback block. ... ok
testScalarSS (control.tests.bdalg_test.TestFeedback)
Scalar system with state space feedback block. ... ok
testScalarScalar (control.tests.bdalg_test.TestFeedback)
Scalar system with scalar feedback block. ... ok
testScalarTF (control.tests.bdalg_test.TestFeedback)
Scalar system with transfer function feedback block. ... ok
testTFSS (control.tests.bdalg_test.TestFeedback)
Transfer function system with state space feedback block. ... ok
testTFScalar (control.tests.bdalg_test.TestFeedback)
Transfer function system with scalar feedback block. ... ok
testTFTF (control.tests.bdalg_test.TestFeedback)
Transfer function system with transfer function feedback block. ... ok
testConvert (control.tests.convert_test.TestConvert)
Test state space to transfer function conversion. ... ok
testAddition (control.tests.discrete_test.TestDiscrete) ... ok
testCopyConstructor (control.tests.discrete_test.TestDiscrete) ... ok
testFeedback (control.tests.discrete_test.TestDiscrete) ... ok
testMultiplication (control.tests.discrete_test.TestDiscrete) ... ok
testSimulation (control.tests.discrete_test.TestDiscrete) ... ok
testSystemInitialization (control.tests.discrete_test.TestDiscrete) ... ok
testTimebaseEqual (control.tests.discrete_test.TestDiscrete) ... ok
test_discrete_bode (control.tests.discrete_test.TestDiscrete) ... ok
test_sample_ss (control.tests.discrete_test.TestDiscrete) ... ok
test_sample_system (control.tests.discrete_test.TestDiscrete) ... ok
test_sample_tf (control.tests.discrete_test.TestDiscrete) ... ok
test_timebase (control.tests.discrete_test.TestDiscrete) ... ok
testisctime (control.tests.discrete_test.TestDiscrete) ... ok
testisdtime (control.tests.discrete_test.TestDiscrete) ... ok
testAgainstOctave (control.tests.frd_test.TestFRD) ... ok
testAuto (control.tests.frd_test.TestFRD) ... ok
testBadInputType (control.tests.frd_test.TestFRD)
Give the constructor invalid input types. ... ok
testFeedback (control.tests.frd_test.TestFRD) ... ok
testFeedback2 (control.tests.frd_test.TestFRD) ... ok
testInconsistentDimension (control.tests.frd_test.TestFRD) ... ok
testMIMO (control.tests.frd_test.TestFRD) ... ok
testMIMOMult (control.tests.frd_test.TestFRD) ... ok
testMIMOSmooth (control.tests.frd_test.TestFRD) ... ok
testMIMOfb (control.tests.frd_test.TestFRD) ... ok
testMIMOfb2 (control.tests.frd_test.TestFRD) ... ok
testNyquist (control.tests.frd_test.TestFRD) ... ok
testOperators (control.tests.frd_test.TestFRD) ... ok
testOperatorsTf (control.tests.frd_test.TestFRD) ... ok
testSISOtf (control.tests.frd_test.TestFRD) ... ok
testbdalg (control.tests.frd_test.TestFRD) ... ok
test_phase_crossover_frequencies (control.tests.margin_test.TestMargin) ... ok
test_stability_margins (control.tests.margin_test.TestMargin) ... ok
test_care (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_care_g (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_dare (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_dare_g (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_dlyap (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_dlyap_g (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_dlyap_sylvester (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_lyap (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_lyap_g (control.tests.mateqn_test.TestMatrixEquations) ... ok
test_lyap_sylvester (control.tests.mateqn_test.TestMatrixEquations) ... ok
testBalred (control.tests.matlab_test.TestMatlab) ... ok
testBode (control.tests.matlab_test.TestMatlab) ... ok
testCombi01 (control.tests.matlab_test.TestMatlab) ... SKIP: need to update margin command
testConnect (control.tests.matlab_test.TestMatlab) ... ok
testConnect2 (control.tests.matlab_test.TestMatlab) ... ok
testCtrb (control.tests.matlab_test.TestMatlab) ... ok
testDamp (control.tests.matlab_test.TestMatlab) ... ok
testDcgain (control.tests.matlab_test.TestMatlab) ... ok
testDrss (control.tests.matlab_test.TestMatlab) ... ok
testEvalfr (control.tests.matlab_test.TestMatlab) ... ok
testFRD (control.tests.matlab_test.TestMatlab) ... ok
testFeedback (control.tests.matlab_test.TestMatlab) ... ok
testFreqresp (control.tests.matlab_test.TestMatlab) ... ok
testGram (control.tests.matlab_test.TestMatlab) ... ok
testHsvd (control.tests.matlab_test.TestMatlab) ... ok
testImpulse (control.tests.matlab_test.TestMatlab) ... ok
testInitial (control.tests.matlab_test.TestMatlab) ... ok
testLQR (control.tests.matlab_test.TestMatlab) ... ok
testLsim (control.tests.matlab_test.TestMatlab) ... ok
testMIMOssdata (control.tests.matlab_test.TestMatlab) ... ok
testMargin (control.tests.matlab_test.TestMatlab) ... ok
testMinreal (control.tests.matlab_test.TestMatlab)
Test a minreal model reduction ... ok
testModred (control.tests.matlab_test.TestMatlab) ... ok
testNichols (control.tests.matlab_test.TestMatlab) ... ok
testNyquist (control.tests.matlab_test.TestMatlab) ... ok
testObsv (control.tests.matlab_test.TestMatlab) ... ok
testOpers (control.tests.matlab_test.TestMatlab) ... ok
testPZmap (control.tests.matlab_test.TestMatlab) ... /usr/local/lib/python2.7/site-packages/numpy/ma/core.py:3895: UserWarning: Warning: converting a masked element to nan.
warnings.warn("Warning: converting a masked element to nan.")
ok
testPade (control.tests.matlab_test.TestMatlab) ... ok
testParallel (control.tests.matlab_test.TestMatlab) ... ok
testPlace (control.tests.matlab_test.TestMatlab) ... ok
testPoleZero (control.tests.matlab_test.TestMatlab) ... ok
testRlocus (control.tests.matlab_test.TestMatlab) ... ok
testRss (control.tests.matlab_test.TestMatlab) ... ok
testSISOssdata (control.tests.matlab_test.TestMatlab) ... ok
testSISOtfdata (control.tests.matlab_test.TestMatlab) ... ok
testSS2cont (control.tests.matlab_test.TestMatlab) ... ok
testSeries (control.tests.matlab_test.TestMatlab) ... ok
testStep (control.tests.matlab_test.TestMatlab) ... ok
testUnwrap (control.tests.matlab_test.TestMatlab) ... ok
control.tests.matlab_test.test_suite ... ok
testMinrealBrute (control.tests.minreal_test.TestMinreal) ... ok
testMinrealSS (control.tests.minreal_test.TestMinreal)
Test a minreal model reduction ... ok
testMinrealtf (control.tests.minreal_test.TestMinreal)
Try the minreal function, and also test easy entry by creation ... ok
testBalredTruncate (control.tests.modelsimp_test.TestModelsimp) ... ok
testHSVD (control.tests.modelsimp_test.TestModelsimp) ... ok
testMarkov (control.tests.modelsimp_test.TestModelsimp) ... ok
testModredMatchDC (control.tests.modelsimp_test.TestModelsimp) ... ok
testModredTruncate (control.tests.modelsimp_test.TestModelsimp) ... ok
testNgrid (control.tests.nichols_test.TestStateSpace)
Generate a Nichols plot. ... ok
testNicholsPlain (control.tests.nichols_test.TestStateSpace)
Generate a Nichols plot. ... ok
testInvPendAuto (control.tests.phaseplot_test.TestPhasePlot) ... ok
testInvPendLogtime (control.tests.phaseplot_test.TestPhasePlot) ... ok
testInvPendNoSims (control.tests.phaseplot_test.TestPhasePlot) ... ok
testInvPendSims (control.tests.phaseplot_test.TestPhasePlot) ... ok
testInvPendTimePoints (control.tests.phaseplot_test.TestPhasePlot) ... ok
testOscillatorParams (control.tests.phaseplot_test.TestPhasePlot) ... ok
testRootLocus (control.tests.rlocus_test.TestRootLocus)
Basic root locus plot ... ok
test_without_gains (control.tests.rlocus_test.TestRootLocus) ... ok
control.tests.rlocus_test.test_suite ... ok
testFreqResp (control.tests.slycot_convert_test.TestSlycot)
Compare the bode reponses of the SS systems and TF systems to the original SS ... ok
testTF (control.tests.slycot_convert_test.TestSlycot)
Directly tests the functions tb04ad and td04ad through direct ... ok
testAcker (control.tests.statefbk_test.TestStatefbk) ... ok
testCtrbMIMO (control.tests.statefbk_test.TestStatefbk) ... ok
testCtrbObsvDuality (control.tests.statefbk_test.TestStatefbk) ... ok
testCtrbSISO (control.tests.statefbk_test.TestStatefbk) ... ok
testGramWc (control.tests.statefbk_test.TestStatefbk) ... ok
testGramWo (control.tests.statefbk_test.TestStatefbk) ... ok
testGramWo2 (control.tests.statefbk_test.TestStatefbk) ... ok
testGramsys (control.tests.statefbk_test.TestStatefbk) ... ok
testObsvMIMO (control.tests.statefbk_test.TestStatefbk) ... ok
testObsvSISO (control.tests.statefbk_test.TestStatefbk) ... ok
test_LQR_3args (control.tests.statefbk_test.TestStatefbk) ... ok
test_LQR_integrator (control.tests.statefbk_test.TestStatefbk) ... ok
control.tests.statefbk_test.test_suite ... ok
testPole (control.tests.statesp_test.TestDrss)
Test that the poles of drss outputs have less than unit magnitude. ... ok
testShape (control.tests.statesp_test.TestDrss)
Test that drss outputs have the right state, input, and output ... ok
testPole (control.tests.statesp_test.TestRss)
Test that the poles of rss outputs have a negative real part. ... ok
testShape (control.tests.statesp_test.TestRss)
Test that rss outputs have the right state, input, and output ... ok
testAdd (control.tests.statesp_test.TestStateSpace)
Add two MIMO systems. ... ok
testAppendSS (control.tests.statesp_test.TestStateSpace)
Test appending two state-space systems ... ok
testAppendTF (control.tests.statesp_test.TestStateSpace)
Test appending a state-space system with a tf ... ok
testArrayAccessSS (control.tests.statesp_test.TestStateSpace) ... ok
testEvalFr (control.tests.statesp_test.TestStateSpace)
Evaluate the frequency response at one frequency. ... ok
testFreqResp (control.tests.statesp_test.TestStateSpace)
Evaluate the frequency response at multiple frequencies. ... ok
testMinreal (control.tests.statesp_test.TestStateSpace)
Test a minreal model reduction ... ok
testMul (control.tests.statesp_test.TestStateSpace)
Multiply two MIMO systems. ... ok
testPole (control.tests.statesp_test.TestStateSpace)
Evaluate the poles of a MIMO system. ... ok
testSub (control.tests.statesp_test.TestStateSpace)
Subtract two MIMO systems. ... ok
testZero (control.tests.statesp_test.TestStateSpace)
Evaluate the zeros of a SISO system. ... ok
test_check_convert_shape (control.tests.test_control_matlab.TestControlMatlab) ... SKIP: skipping test_check_convert_shape, need to update test
test_convert_MIMO_to_SISO (control.tests.test_control_matlab.TestControlMatlab)
Convert mimo to siso systems ... ok
test_dcgain (control.tests.test_control_matlab.TestControlMatlab)
Test function dcgain with different systems ... ok
test_dcgain_2 (control.tests.test_control_matlab.TestControlMatlab)
Test function dcgain with different systems ... ok
test_impulse (control.tests.test_control_matlab.TestControlMatlab) ... ok
test_initial (control.tests.test_control_matlab.TestControlMatlab) ... ok
test_lsim (control.tests.test_control_matlab.TestControlMatlab) ... SKIP: skipping test_lsim, need to update test
test_step (control.tests.test_control_matlab.TestControlMatlab)
Test function step. ... ok
test_forced_response (control.tests.timeresp_test.TestTimeresp) ... ok
test_impulse_response (control.tests.timeresp_test.TestTimeresp) ... ok
test_initial_response (control.tests.timeresp_test.TestTimeresp) ... ok
test_initial_response_no_trim (control.tests.timeresp_test.TestTimeresp) ... ok
test_lsim_double_integrator (control.tests.timeresp_test.TestTimeresp) ... ok
test_step_response (control.tests.timeresp_test.TestTimeresp) ... ok
testAddInconsistentDimension (control.tests.xferfcn_test.TestXferFcn)
Add two transfer function matrices of different sizes. ... ok
testAddMIMO (control.tests.xferfcn_test.TestXferFcn)
Add two MIMO systems. ... ok
testAddSISO (control.tests.xferfcn_test.TestXferFcn)
Add two SISO systems. ... ok
testAddScalar (control.tests.xferfcn_test.TestXferFcn)
Add two direct feedthrough systems. ... ok
testBadInputType (control.tests.xferfcn_test.TestXferFcn)
Give the constructor invalid input types. ... ok
testConvertToTransferFunction (control.tests.xferfcn_test.TestXferFcn)
Test for correct state space to transfer function conversion. ... ok
testDivSISO (control.tests.xferfcn_test.TestXferFcn)
Divide two SISO systems. ... ok
testDivScalar (control.tests.xferfcn_test.TestXferFcn)
Divide two direct feedthrough systems. ... ok
testEvalFrMIMO (control.tests.xferfcn_test.TestXferFcn)
Evaluate the frequency response of a MIMO system at one frequency. ... ok
testEvalFrSISO (control.tests.xferfcn_test.TestXferFcn)
Evaluate the frequency response of a SISO system at one frequency. ... ok
testFeedbackSISO (control.tests.xferfcn_test.TestXferFcn)
Test for correct SISO transfer function feedback. ... ok
testFreqRespMIMO (control.tests.xferfcn_test.TestXferFcn)
Evaluate the magnitude and phase of a MIMO system at multiple ... SKIP: skipping, known issue with Python 3
testFreqRespSISO (control.tests.xferfcn_test.TestXferFcn)
Evaluate the magnitude and phase of a SISO system at multiple ... ok
testInconsistentColumns (control.tests.xferfcn_test.TestXferFcn)
Give the constructor inputs that do not have the same number of ... ok
testInconsistentDimension (control.tests.xferfcn_test.TestXferFcn)
Give the constructor a numerator and denominator of different ... ok
testMIMO (control.tests.xferfcn_test.TestXferFcn)
Test conversion of a single input, two-output state-space ... ok
testMatrixMult (control.tests.xferfcn_test.TestXferFcn)
MIMO transfer functions should be multiplyable by constant ... ok
testMinreal (control.tests.xferfcn_test.TestXferFcn)
Try the minreal function, and also test easy entry by creation ... ok
testMinreal2 (control.tests.xferfcn_test.TestXferFcn)
This one gave a problem, due to poly([]) giving simply 1 ... ok
testMulInconsistentDimension (control.tests.xferfcn_test.TestXferFcn)
Multiply two transfer function matrices of incompatible sizes. ... ok
testMulMIMO (control.tests.xferfcn_test.TestXferFcn)
Multiply two MIMO systems. ... ok
testMulSISO (control.tests.xferfcn_test.TestXferFcn)
Multiply two SISO systems. ... ok
testMulScalar (control.tests.xferfcn_test.TestXferFcn)
Multiply two direct feedthrough systems. ... ok
testNegMIMO (control.tests.xferfcn_test.TestXferFcn)
Negate a MIMO system. ... ok
testNegSISO (control.tests.xferfcn_test.TestXferFcn)
Negate a SISO system. ... ok
testNegScalar (control.tests.xferfcn_test.TestXferFcn)
Negate a direct feedthrough system. ... SKIP: skipping, known issue with Python 3
testPoleMIMO (control.tests.xferfcn_test.TestXferFcn)
Test for correct MIMO poles. ... ok
testSubMIMO (control.tests.xferfcn_test.TestXferFcn)
Add two MIMO systems. ... ok
testSubSISO (control.tests.xferfcn_test.TestXferFcn)
Add two SISO systems. ... ok
testSubScalar (control.tests.xferfcn_test.TestXferFcn)
Add two direct feedthrough systems. ... ok
testTruncateCoeff1 (control.tests.xferfcn_test.TestXferFcn)
Remove extraneous zeros in polynomial representations. ... ok
testTruncateCoeff2 (control.tests.xferfcn_test.TestXferFcn)
Remove extraneous zeros in polynomial representations. ... ok
testZeroDenominator (control.tests.xferfcn_test.TestXferFcn)
Give the constructor a transfer function with a zero denominator. ... ok

Ran 190 tests in 5.609s

OK (skipped=5)

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