[python-control-developers] [python-control/python-control] 38514c: Correct docstrings in matlab time response functio...

[Clancy R. <cwr...@pr...>]

  Branch: refs/heads/master
  Home:   https://github.com/python-control/python-control
  Commit: 38514c9c3f57f80d332bb13b8ef71e401c94407a
      https://github.com/python-control/python-control/commit/38514c9c3f57f80d332bb13b8ef71e401c94407a
  Author: Clancy Rowley <cwr...@pr...>
  Date:   2014-08-16 (Sat, 16 Aug 2014)

  Changed paths:
    M control/matlab.py

  Log Message:
  -----------
  Correct docstrings in matlab time response functions

Fixes #35


  Commit: 8c1fdeb2b401866777a2f9c22a968e13199fdf0b
      https://github.com/python-control/python-control/commit/8c1fdeb2b401866777a2f9c22a968e13199fdf0b
  Author: Clancy Rowley <cwr...@pr...>
  Date:   2014-08-16 (Sat, 16 Aug 2014)

  Changed paths:
    M control/tests/mateqn_test.py

  Log Message:
  -----------
  Improve readability of matrix equation tests


  Commit: 7cf9630146a961c28c38817d48794525d22c6287
      https://github.com/python-control/python-control/commit/7cf9630146a961c28c38817d48794525d22c6287
  Author: Clancy Rowley <cwr...@pr...>
  Date:   2014-08-16 (Sat, 16 Aug 2014)

  Changed paths:
    M control/mateqn.py
    M control/tests/mateqn_test.py

  Log Message:
  -----------
  Fix bug in dare so that it returns a stabilizing solution

The new implementation calls the routine
    scipy.linalg.solve_discrete_are(A, B, Q, R)
which is included in scipy versions >= 0.11.  The old implementation
using slycot did satisfy the Riccati equation, but did not return a
stabilizing solution.  The scipy implementation apparently works
correctly, though.  This change fixes #8.

Unit tests now make sure closed-loop eigenvalues lie inside
the unit circle.

Note: the scipy implementation handles only the case S = 0, E = I,
the default values.  If S and E are specified, the old routine (using
slycot) is called.  This passes the existing tests, but the tests
include only one simple case, so it would be good to test this more
extensively.


Compare: https://github.com/python-control/python-control/compare/b798bfa1cbd9...7cf9630146a9