JuliaControl / JuliaControl/ControlSystems.jl

c2d of improper transfer function

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#128 2 comments 0 reactions 0 assignees View on GitHub

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bug decision-needed
Dominant language
Julia
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Forks
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Avg merge
1h 12m
Merged PRs (30d)
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Description

c2d of improper transfer function breaks silently since it goes through state-space, and isproper is broken, see https://github.com/JuliaControl/ControlSystems.jl/issues/85
Should we enable some way of discretizing a transferfunction other than going through state-space form?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the linked ControlSystems.jl issue 85 and then trace the c2d and isproper entry points mentioned here. Determine how improper transfer functions currently pass through state-space conversion and what alternative discretization behavior should be supported. Done means the failure is no longer silent and the chosen behavior is clearly validated.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
tooling
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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