Opened 11 years ago
Last modified 5 years ago
#2664 reopened defect
Probelm with handling "when statement" in an FMU
| Reported by: | Owned by: | Willi Braun | |
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| Priority: | high | Milestone: | Future |
| Component: | FMI | Version: | trunk |
| Keywords: | Cc: | Lennart Ochel, Karim Adbdelhak, Andreas Heuermann |
Description
There has been a problem with models involving "when statements". The modelica code of these models work fine but the problem manifests itself once the model is exported as an FMU and then re-imported for simulation.
Running simulations after re-importing the FMU show that when conditions in the model never get fired at all.
Attachments (5)
Change History (24)
by , 11 years ago
| Attachment: | SimpleTest.mo added |
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by , 11 years ago
by , 11 years ago
| Attachment: | script.mos added |
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comment:1 by , 11 years ago
| Cc: | added |
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comment:2 by , 11 years ago
| Owner: | changed from to |
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| Status: | new → accepted |
The fmi-export doesn't work well at all i.e. testsuite/openmodelica/fmi/ModelExchange/testInOutTest.mos is totally wrong. We can't use the ringbuffer for the exported model, since we can't assure the correct handling by the calling programs.
But the issue here is mostly fmi-import, since the function fmiEventUpdate needs a call every time a discrete variable is changing.
Further there are serious problem, with the compile-time and simulation-time with our fmi-import.
comment:3 by , 11 years ago
in r20190 fixed some fmi export issues e.g. testsuite/openmodelica/fmi/ModelExchange/testInOutTest.mos works correctly again.
comment:5 by , 10 years ago
| Milestone: | 1.9.1 → 1.9.2 |
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This ticket was not closed for 1.9.1, which has now been released. It was batch modified for milestone 1.9.2 (but maybe an empty milestone was more appropriate; feel free to change it).
comment:6 by , 10 years ago
| Milestone: | 1.9.2 → 1.9.3 |
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Milestone changed to 1.9.3 since 1.9.2 was released.
comment:11 by , 8 years ago
| Milestone: | 1.11.0 → 1.12.0 |
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Milestone moved to 1.12.0 due to 1.11.0 already being released.
comment:12 by , 7 years ago
| Milestone: | 1.12.0 → Future |
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The milestone of this ticket has been reassigned to "Future".
If you think the issue is still valid and relevant for you, please select milestone 1.13.0 for back-end, code generation and run-time issues, or 2.0.0 for front-end issues.
If you are aware that the problem is no longer present, please select the milestone corresponding to the version of OMC you used to check that, and set the status to "worksforme".
In both cases, a short informative comment would be welcome.
comment:13 by , 7 years ago
| Milestone: | Future → 1.13.0 |
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| Resolution: | → fixed |
| Status: | accepted → closed |
This seems to be fixed in the meanwhile.
comment:14 by , 5 years ago
This problem seems not fixed. The problem can be seen in the 1.14 official release version.
by , 5 years ago
| Attachment: | test_res.png added |
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by , 5 years ago
| Attachment: | test_res.mat added |
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comment:15 by , 5 years ago
Tested it with 1.16.0~dev-95-g92c3b53 (nightly) and it seems to work fine (see attached files test_res.mat and test_res.png). At it least it does what i expected. Could you attach your results?
I downloaded the three files and just run it from terminal on ubuntu.
EDIT: Ah no ... i looked at the wrong line in the plot, you are right it seems wrong!
comment:16 by , 5 years ago
| Cc: | added; removed |
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| Milestone: | 1.13.0 → Future |
| Resolution: | fixed |
| Status: | closed → reopened |
follow-up: 19 comment:18 by , 5 years ago
The FMI import is deprecated, use OMSimulator instead.
We should add a warning for this, since it simply doesn't work.
But I am not completely sure how to do this with OMSimulator scripting and OMEdit keeps crashing when I try to use it (see #5785).
Replacing when change(u) then with when u > pre(u) or u < pre(u) then or when u>pre(u) then doesn't help here.
So it is probably no problem regarding the change key-word, or the combination of two condition literals.
comment:19 by , 5 years ago
Replying to AnHeuermann:
The FMI import is deprecated, use OMSimulator instead.
We should add a warning for this, since it simply doesn't work.
Absolutely!
However, please see the discussion starting in ticket:5621#comment:20
I don't think that banning FMI import is a good idea.
I have attached a test case.