Skip to content

Refactored matrix inversions (see #85 and #91) #101

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
slivingston merged 14 commits into from
Dec 31, 2016
Merged

Refactored matrix inversions (see #85 and #91) #101

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
14 commits
Select commit Hold shift + click to select a range
4d70d00
Replaced a loop with a map
mp4096 Jun 13, 2016
8285cbf
Removed redundant numpy.linalg.solve calls
mp4096 Jun 13, 2016
29e7f95
Numerical improvements in statefbk.py
mp4096 Jun 13, 2016
443a7e3
Replaced `inv` with `solve` in mateqns
mp4096 Jul 3, 2016
af36e84
Added a test case for the reachable canon. form
mp4096 Jul 3, 2016
b9e4455
Replaced `inv` with `solve` in canonical forms class
mp4096 Jul 3, 2016
1fad4c6
Added a check for unreachable systems to canonical
mp4096 Jul 3, 2016
863538f
Replaced `inv` with `solve` and LSQ in modelsimp
mp4096 Jul 3, 2016
d5cb4f1
Fixed "compatability" typo
mp4096 Jul 3, 2016
6a2d96f
Removed rank check with a det in a statefbk test
mp4096 Jul 12, 2016
7b8c9f0
Added singularity check to the residualization method
mp4096 Jul 13, 2016
860cbe8
Added a unit test for residualization of unstable systems
mp4096 Jul 13, 2016
9a33509
Refactored code to be more pythonic
mp4096 Jul 13, 2016
71fef4b
Check eigenvalues' real part using NumPy
mp4096 Aug 25, 2016
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Added singularity check to the residualization method 
* Changed the unit test in matlab_test.py so that no error is thrown
  • Loading branch information
@mp4096
mp4096 committed Nov 20, 2016
commit 7b8c9f02c591106bf3c37a4b15f3d0976d7c9229
4 changes: 2 additions & 2 deletions control/modelsimp.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -181,8 +181,8 @@ def modred(sys, ELIM, method='matchdc'):
# if matchdc, residualize

# Check if the matrix A22 is invertible
# if np.linalg.matrix_rank(A22) != len(ELIM):
# raise ValueError("Matrix A22 is singular to working precision.")
if np.linalg.matrix_rank(A22) != len(ELIM):
raise ValueError("Matrix A22 is singular to working precision.")

# Now precompute A22\A21 and A22\B2 (A22I = inv(A22))
# We can solve two linear systems in one pass, since the
Expand Down
2 changes: 1 addition & 1 deletion control/tests/matlab_test.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -386,7 +386,7 @@ def testBalred(self):

def testModred(self):
modred(self.siso_ss1, [1])
modred(self.siso_ss2 * self.siso_ss3, [1, 2])
modred(self.siso_ss2 * self.siso_ss3, [0, 1])
modred(self.siso_ss3, [1], 'matchdc')
modred(self.siso_ss3, [1], 'truncate')

Expand Down