Satellite Loaded With AI For Self-Diagnosis

TheReckoning writes "NASA has loaded its E0-1 Satellite with Artificial Intelligence to diagnose on-board failures. The software 'works by comparing a computerized model of how the spacecraft's systems and software should perform against actual performance. If the spacecraft's behavior differs from the model, then the ... "reasoner" looks for the root cause of this difference and gives flight controllers several suggestions of what might have gone wrong.' Another NASA probe loaded with AI was Deep Space 1."

Comments

So this may be a simple question but...

[EvilSS]

..in all seriousness, what happens if the AI system malfunctions?

Re:So this may be a simple question but...

[Brett Buck]

Bingo - you have hit that nail on the head. These sorts of systems in aerospace applications are absolutely notorious for detecting proper (but off-nominal) operation as a failure, and then going off and reconfiguring a bunch of stuff unnecessarily. Or diagnosing real problems incorrectly, and either not helping or making things worse, or much worse.

Even more importantly, the testing associated with these systems is very expensive and time-consuming - which means they don't really test it very well at all.

I've seen similar systems in action in real space flights - and for the most part, it just makes things worse. If you were to limit yourself to simple things you really could detect, it would work out fine for the most part. But the tendency is to make it try to be a magic fixit device for any problem that comes up.

In one case, I saw such a system deploy an appendage in conditions that resulted in the spacecraft structure being severely damaged. In another, it reconfigured every spacecraft system to the redundant unit in response to a trivial problem - when all that would have been required would have been to wait 20 minutes, then correct the trivial problem.

Brett

Wouldn't obvious failures be detectable anyway?

[mind21_98]

Wouldn't obvious failures (like the failure of a sensor) be detected by Mission Control without LV2? Or is LV2 more along the lines of a troubleshooter application for your computer, where you specify the problem and it gives you advice?