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Title: Add B-splines and solve_flat_ocp to flatsys by murrayrm · Pull Request #763 · python-control/python-control · GitHub

Open Graph Title: Add B-splines and solve_flat_ocp to flatsys by murrayrm · Pull Request #763 · python-control/python-control

X Title: Add B-splines and solve_flat_ocp to flatsys by murrayrm · Pull Request #763 · python-control/python-control

Description: This PR extends the flatsys module to include two new elements: flatsys.BSplineFamily adds B-splines as a new type of basis for solving trajectory generation problems (within flatsys or optimal). flatsys.solve_flat_ocp() allows solution of optimal control problems for differentially flat systems with trajectory and terminal costs and constraints, mirroring the functionality of optimal.solve_ocp(). In the process of making these additions, a few other changes: The flatsys.BSplineFamily introduces the ability to have multi-variable basis functions (where each flat output uses a different basis function from a selected family). This is useful if you have a differentially flat system in which you would like to have different degrees for different variables. Fixed a bug in the computation of derivatives for the Bezier family of basis functions with rescaled final time, and implemented a final time rescaling for the polynomial family of basis functions. Added a more descriptive __repr__ for basis functions (show the family + information on attributes). New documentation (sphinx + docstring) and units tests for the added functionality.

Open Graph Description: This PR extends the flatsys module to include two new elements: flatsys.BSplineFamily adds B-splines as a new type of basis for solving trajectory generation problems (within flatsys or optimal)....

X Description: This PR extends the flatsys module to include two new elements: flatsys.BSplineFamily adds B-splines as a new type of basis for solving trajectory generation problems (within flatsys or optimal)....

Opengraph URL: https://github.com/python-control/python-control/pull/763

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3dcad07 initial bspline implementation murrayrm Aug 4, 2022 https://github.com/python-control/python-control/pull/763/commits/3dcad07abdfe694fc6fbe480a3cab574e0abf3e9
0ab0d07 add support for multiple spline variables; update docstrings murrayrm Aug 9, 2022 https://github.com/python-control/python-control/pull/763/commits/0ab0d0703f22281aee4bf8d7db65bda8effeb372
78f7bbb initial implementation of solve_flat_ocp murrayrm Aug 13, 2022 https://github.com/python-control/python-control/pull/763/commits/78f7bbb4361b8c6118e938e6fff7946a23324500
05084f3 unit tests, bug fixes, algorithm improvements murrayrm Aug 19, 2022 https://github.com/python-control/python-control/pull/763/commits/05084f35c933f4a02112830271b23dd2d3fee198
e65c4f2 additional unit tests for coverage + bug fixes murrayrm Aug 20, 2022 https://github.com/python-control/python-control/pull/763/commits/e65c4f29e1e4a8fa096859a032337fa02f9ee20f
2901cbe updated flatsys documentation murrayrm Aug 20, 2022 https://github.com/python-control/python-control/pull/763/commits/2901cbe4e3863083dfbe9a674235ef7cdd01c267
47262f5 update coeff handling to allow multi-variable basis murrayrm Aug 29, 2022 https://github.com/python-control/python-control/pull/763/commits/47262f5ceaf5fc5a7d8c6947d9d24c03e3078fd6
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