Basic functionality

[aytekinar]

Description

Below is a set of basic functionality needed:

• c2d,
• d2c,
• simulate,
• impulse,
• step (SystemsBase.jl),
• additional signals (SystemsBase.jl),
• dcgain,
• rootlocus,
• freqresp (SystemsBase.jl),
• bode (SystemsBase.jl),
• nyquist (SystemsBase.jl),
• sigma,
• plotting through RecipesBase,
• care,
• dare,
• lyap,
• dlyap,
• gram,
• observability,
• controllability,
• covar,
• norm,
• balance,
• lqr,
• dlqr,
• acker (no need, since place is implemented in robust way),
• place,
• rss,
• drss.

Perhaps of limited use:

• overshoot,
• undershoot,
• finalvalue,
• peak,
• peaktime,
• risetime,
• settlingtime,
• isstable,
• markovparam,
• damp,
• dampreport,
• phasemargin,
• gainmargin,

Need

To attract users.

References / Links

N/A.

Proposal

N/A.

[CristianRojas]

@aytekinar: It is being discussed whether we should move several of these functions to ControlCore.jl, such as freqresp, bode, nyquist. Regarding the rest, I have implemented/ported some of them for the new types of ControlCore.jl, like dcgain (well, your implementation actually :) ), c2d, d2c, isstable.

Should we move lsim, impulse, step to ControlCore.jl too?

Cc: @neveritt

[aytekinar]

I just moved those issues from GitLab here. I did not pay attention to those. We can just check the options we have already implemented, either here or in ControlCore :)

[CristianRojas]

Ok :)
By the way, I have separated freqresp, bode and nyquist, and added a few more, in #1 so we can check them individually.

[aytekinar]

Do we really want to have gangoffour and gangofseven?

[CristianRojas]

Mmm you're right... I have removed them, but instead I have added other functions that we used to have in ControlKTH.

[aytekinar]

Uhm... I think you wanted to teach me to shut my mouth up! I opposed two functions, and received 8 more, in return :)