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Reimplementation of 2D phase plots #980

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Merged
murrayrm merged 4 commits into from
Mar 31, 2024
Merged

Reimplementation of 2D phase plots #980

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3ca12ff
initial reimplementation of phase plots
murrayrm Mar 21, 2024
c41d472
address @sliivingston, @sawyerbfuller comments
murrayrm Mar 30, 2024
edb444e
small updates to address @sawyerbfuller comments on updfcn
murrayrm Mar 30, 2024
748e36a
fix typos + other small fixes from @slivingston
murrayrm Mar 31, 2024
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5 changes: 5 additions & 0 deletions control/__init__.py
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Expand Up @@ -63,6 +63,7 @@
* :mod:`~control.flatsys`: Differentially flat systems
* :mod:`~control.matlab`: MATLAB compatibility module
* :mod:`~control.optimal`: Optimization-based control
* :mod:`~control.phaseplot`: 2D phase plane diagrams

"""

Expand Down Expand Up @@ -103,6 +104,10 @@
from .passivity import *
from .sysnorm import *

# Allow access to phase_plane functions as ct.phaseplot.fcn or ct.pp.fcn
from . import phaseplot
from . import phaseplot as pp

# Exceptions
from .exception import *

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3 changes: 3 additions & 0 deletions control/config.py
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Expand Up @@ -152,6 +152,9 @@ def reset_defaults():
from .timeplot import _timeplot_defaults
defaults.update(_timeplot_defaults)

from .phaseplot import _phaseplot_defaults
defaults.update(_phaseplot_defaults)


def _get_param(module, param, argval=None, defval=None, pop=False, last=False):
"""Return the default value for a configuration option.
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2 changes: 1 addition & 1 deletion control/flatsys/__init__.py
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Expand Up @@ -35,7 +35,7 @@
# Author: Richard M. Murray
# Date: 1 Jul 2019

r"""The :mod:`control.flatsys` package contains a set of classes and functions
r"""The :mod:`control.flatsys` module contains a set of classes and functions

@slivingston slivingston Mar 28, 2024

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The original is correct: flatsys is a package according to standard terms: https://docs.python.org/3/glossary.html#term-package

that can be used to compute trajectories for differentially flat systems.

A differentially flat system is defined by creating an object using the
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2 changes: 1 addition & 1 deletion control/freqplot.py
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Expand Up @@ -1070,7 +1070,7 @@ def gen_zero_centered_series(val_min, val_max, period):
_nyquist_defaults = {
'nyquist.primary_style': ['-', '-.'], # style for primary curve
'nyquist.mirror_style': ['--', ':'], # style for mirror curve
'nyquist.arrows': 2, # number of arrors around curve
'nyquist.arrows': 2, # number of arrows around curve
'nyquist.arrow_size': 8, # pixel size for arrows
'nyquist.encirclement_threshold': 0.05, # warning threshold
'nyquist.indent_radius': 1e-4, # indentation radius
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