v1.7.4

ControlSystems v1.7.4

Diff since v1.7.3

Closed issues:

• Allow place to handle multi input systems (#384)
• zpk view of NamedStateSpace structure (#845)
• sigmaplot -- possible to just plot largest and smallest singular values? (#846)

Merged pull requests:

• add differentiable versions of are and hinf (#844) (@baggepinnen)
• handle Int in conversion to tf (#847) (@baggepinnen)
• allow plotting of only largest and smallest sigmas (#848) (@baggepinnen)
• simplify AD examples (#850) (@baggepinnen)
• Make continuous-time lyapunov solver differentiable (#851) (@baggepinnen)
• optimize performance of balance_statespace (#852) (@baggepinnen)
• make PD lyap solver differentiable (#853) (@baggepinnen)
• Implementation of place for MIMO systems (#854) (@baggepinnen)
• remove wrong imports (#855) (@baggepinnen)

v1.7.3

ControlSystems v1.7.3

Diff since v1.7.2

Closed issues:

• Polynomials with very small coefficients gets rounded to 0 (#123)
• lsim not working for systems that are not strictly proper (#195)
• iscontinuous function not found (#199)
• Adjustment to dlqr and dlyap (#222)
• Non-positive Ts for continuous types (#447)
• Converting "identity" transfert function with ss results in BoundsError (#828)
• delay*tf being recognized as improper even if it is not. (#830)
• Julia v1.9: ControlSystems/-MTK error message (#834)
• minreal works -- but gives "wrong" result (#835)
• bodeplot... is the magnitude given in dB? (#839)

Merged pull requests:

• handle breaking change in Polynomials (#829) (@baggepinnen)
• better error message for improper delay conversion (#831) (@baggepinnen)
• remove instance with h where it should be Ts (#832) (@albheim)
• apply numerical balancing before plotting (#836) (@baggepinnen)
• make balance_statespace work for more system types (#837) (@baggepinnen)
• add precompilation workload (#838) (@baggepinnen)
• optimize performance of sigma (#840) (@baggepinnen)
• try harder to return the correct type from matrix comps (#841) (@baggepinnen)
• add AD to lqr opt (#842) (@baggepinnen)
• Add interface to DSP (#843) (@baggepinnen)

v1.7.2

ControlSystems v1.7.2

Diff since v1.7.1

Closed issues:

• wrong frequency response of systems with delay (#824)

Merged pull requests:

• add note on how to obtain Riccati solution to docstring (#821) (@baggepinnen)
• Autolqr (#822) (@baggepinnen)
• add simple robustness analysis (#823) (@baggepinnen)
• add more examples to time response (#825) (@baggepinnen)
• Update Project.toml (#826) (@baggepinnen)

v1.7.1

ControlSystems v1.7.1

Diff since v1.7.0

Merged pull requests:

• fix import warnings (#820) (@baggepinnen)

v1.7.0

ControlSystems v1.7.0

Diff since v1.6.1

Closed issues:

• ControlSystemIdentification and ControlSystems failed to precompile in Julia 1.8.5 (#812)
• feedback_control causes a stackoverflow on DelayLtiSystem (#815)

Merged pull requests:

• Charpoly computation improved (#804) (@stepanoslejsek)
• use inplace exp! to save allocs (#806) (@baggepinnen)
• apply statespace balancing in pid constructor (#807) (@baggepinnen)
• add notes on linearizing dynamics using AD (#808) (@baggepinnen)
• Fixes for c2d for polynomials (#809) (@baggepinnen)
• Add ControlSystemsBase compat for Polyester 0.7 (#810) (@jaakkor2)
• fix tests for nightly (#813) (@baggepinnen)
• Missing backticks (#814) (@mzaffalon)
• prevent stackoverflow on feedback with kwargs (#816) (@baggepinnen)
• improve feedback docs (#818) (@baggepinnen)
• add system_name function and use in plots (#819) (@baggepinnen)

v1.6.1

ControlSystems v1.6.1

Diff since v1.6.0

Closed issues:

• Docstrings for Bode and Nyquist plot functions specify incorrect indexing (#797)
• marginplot + setPlotScale("dB") = no magnitude plot (#798)

Merged pull requests:

• fix pid with Ts keyword (#755) (@baggepinnen)
• Use yscale --> _PlotScaleFunc in some plot recipes (#799) (@baggepinnen)
• warn more against high-order transfer functions (#800) (@baggepinnen)
• handle Infinite delay margins (#801) (@baggepinnen)
• plot the phase guide at the correct phase (#802) (@baggepinnen)
• add stepinfo (#803) (@baggepinnen)
• relax some conversion signatures (#805) (@baggepinnen)

v1.6.0

ControlSystems v1.6.0

Diff since v1.5.4

Merged pull requests:

• RootLocusResult recipe (#792) (@mzaffalon)
• add analysis examples to the docs (#793) (@baggepinnen)

v1.5.4

ControlSystems v1.5.4

Diff since v1.5.3

Closed issues:

• Improved default frequency vector for frequency plots (#5)
• gain is not working (#15)
• Transfer function notation in gangoffour and in general (#78)
• Implement zpk with specified user dcgain (#105)
• Improve efficiency of freqresp for state space systems (#108)
• Deprecate function pole and rename to poles (#117)
• Promoting the ControlSystems package (#201)
• Integration with ModelingToolkit.jl (#395)
• Test error on 1.6 beta (#423)
• Docs not updated by new release (#459)
• rlocusplot shows a very long warning with Plots (#785)
• bodeplot not showing plot after 10^2 (#787)

Merged pull requests:

• add option to disable u dims check in lsim (#786) (@baggepinnen)
• CompatHelper: bump compat for Hungarian to 0.7, (keep existing compat) (#788) (@github-actions[bot])
• extended_gangoffour sign fix (#789) (@baggepinnen)
• better default time vector heuristic (#790) (@baggepinnen)

v1.5.3

ControlSystems v1.5.3

Diff since v1.5.2

Closed issues:

• Stable docs not linking correctly? (#570)

Merged pull requests:

• make docs examples strict (#777) (@baggepinnen)
• Improve error message for wrong u dimension in lsim (#778) (@baggepinnen)
• even better error messages for wrong u in lsim (#779) (@baggepinnen)
• provide an error hint on plotting (#780) (@baggepinnen)
• fix delaymargin for systems with multiple gain crossings (#781) (@baggepinnen)
• add methods to are, lyap taking system (#782) (@baggepinnen)
• add extended_gangoffour (#783) (@baggepinnen)
• Fix links in README file. (#784) (@pietrop88)

v1.5.2

ControlSystems v1.5.2

Diff since v1.5.1

Closed issues:

• Lsim docstring update (#758)
• rlocus method (#764)
• lsim, error message for single input system (#767)
• lsim, error when input is a matrix (#769)
• Crating discreate delay system is not allowed as delay is continues (#773)

Merged pull requests:

• Notify user what vector/matrix size is expected for x0, u (#768) (@mzaffalon)
• Restrict size of input parameters (#770) (@mzaffalon)
• improve default limits for nyquistplot (#772) (@baggepinnen)
• add discrete-time delay constructor (#774) (@baggepinnen)
• Implement getpoles for a vector K passed as a parameter (#775) (@mzaffalon)
• try get stable docs to deploy (#776) (@baggepinnen)