[python-control-developers] [python-control/python-control] 126355: Added 5 test for step_info:

[Ben G. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/python-control/python-control
  Commit: 12635500e42d89cb4abfbb0fed88d2d6b5594e72
      https://github.com/python-control/python-control/commit/12635500e42d89cb4abfbb0fed88d2d6b5594e72
  Author: jpp <jua...@gm...>
  Date:   2021-03-12 (Fri, 12 Mar 2021)

  Changed paths:
    M control/tests/timeresp_test.py

  Log Message:
  -----------
  Added 5 test for step_info:
1) System Type 1 - Step response not stationary:  G(s)=1/s(s+1)
2) SISO system with under shoot response and positive final value G(s)=(-s+1)/(s²+s+1)
3) Same system that 2) with k=-1
4) example from matlab online help https://www.mathworks.com/help/control/ref/stepinfo.html G(s)=(s²+5s+5)/(s^4+1.65s^3+6.5s+2)

with stepinfo output:

        RiseTime: 3.8456
    SettlingTime: 27.9762
     SettlingMin: 2.0689
     SettlingMax: 2.6873
       Overshoot: 7.4915
      Undershoot: 0
            Peak: 2.6873
        PeakTime: 8.0530

5) example from matlab online help https://www.mathworks.com/help/control/ref/stepinfo.html
A = [0.68 -0.34; 0.34 0.68];
B = [0.18 -0.05; 0.04 0.11];
C = [0 -1.53; -1.12 -1.10];
D = [0 0; 0.06 -0.37];
sys = StateSpace(A,B,C,D,0.2);
examine the response characteristics for the response from the first input to the second output of sys.

with stepinfo output:

        RiseTime: 0.4000
    SettlingTime: 2.8000
     SettlingMin: -0.6724
     SettlingMax: -0.5188
       Overshoot: 24.6476
      Undershoot: 11.1224
            Peak: 0.6724
        PeakTime: 1


  Commit: f9641709f8f4b647715ad1e71a2533a8d3757ec0
      https://github.com/python-control/python-control/commit/f9641709f8f4b647715ad1e71a2533a8d3757ec0
  Author: jpp <jua...@gm...>
  Date:   2021-03-12 (Fri, 12 Mar 2021)

  Changed paths:
    M control/timeresp.py

  Log Message:
  -----------
  Solve issue #337,  #565  and #564


  Commit: 018d12818b7ab19924eca82a71124d9dbb9835b1
      https://github.com/python-control/python-control/commit/018d12818b7ab19924eca82a71124d9dbb9835b1
  Author: jpp <jua...@gm...>
  Date:   2021-03-16 (Tue, 16 Mar 2021)

  Changed paths:
    M control/timeresp.py

  Log Message:
  -----------
  optimize the code  and solve problems with MIMO
systems converting to SISO systems from input=0 to output =0
solve problems with non stationary systems doing
SteadyStateValue= nan when  y_final is inf


  Commit: 81ae64f80222f97338af3b52d53b42a993300e3c
      https://github.com/python-control/python-control/commit/81ae64f80222f97338af3b52d53b42a993300e3c
  Author: Ben Greiner <co...@bn...>
  Date:   2021-03-17 (Wed, 17 Mar 2021)

  Changed paths:
    M control/tests/timeresp_test.py

  Log Message:
  -----------
  fix comment format


  Commit: 258c9c2f02e79ad4cd5a04328ddfa435d30b1d18
      https://github.com/python-control/python-control/commit/258c9c2f02e79ad4cd5a04328ddfa435d30b1d18
  Author: Ben Greiner <co...@bn...>
  Date:   2021-03-17 (Wed, 17 Mar 2021)

  Changed paths:
    M control/tests/timeresp_test.py
    M control/timeresp.py

  Log Message:
  -----------
  Merge pull request #567 from juanodecc/step_info_improve_jpp

Step info improve jpp


Compare: https://github.com/python-control/python-control/compare/0f951e19fc36...258c9c2f02e7