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RoboCoaster Powered by Windows XP and Commercial RTOS on Single Computer


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  • WMV (WMV Video)

Thanks to everyone who submitted a video for the first-ever Show Off event at PDC05. We had 25 submissions in the space of just a few weeks. To view all of the submissions, look for videos tagged with showoff.

RoboCoaster Powered by Windows XP and Commercial RTOS on Single Computer
KUKA Controls GmbH

Length: 5:31
Shown at PDC05: Yes

Vacationers enjoying an exciting ride on a RoboCoaster controlled by a dual operating system technology, using Windows XP and a commercial off-the-shelf real-time operating system on a single x86 industrial computer. The audio portion explains the selection process, functionality, and the advantages of real-time dual operating system technology.


  • Gerd Lammers, Director Sales and Marketing KUKA Controls GmbH

Tools used

  • Microsoft Visual Studio .NET
  • Microsoft Target Designer
  • Wind River Tornado 2.2



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  • Those people have no idea how "exciting" this ride really is. The Kuka people who organized this stunt should be locked up for a while.

    In these systems there will typically be a separate watchdog process monitoring the servo to see if it isn't lagging too far behind. If it is lagging too far, the system will brake and the kids would remain hanging upside down until someone can be bothered to reset the controller and bring them down. So let's assume that kind of fail-safety is there. Then still you cannot safeguard against plain mechanical failures. The head may brake, the chairs are likely not designed for shaking people upside down, it is a temporary exhibition setup so the base fixtures will not be tested properly and the whole thing may tumble. If the controling software flips a bit or has a bug, the watchdog process will not complain because the programmed path (into the concrete) is being followed just nicely.

    While the robot brake system is likely to be fail-safe (it brakes when the power drops), the chairs did not seem to be designed that way at all. They are one-size-fits-nobody-but-your-200-pound-6-feet-bloke-type of chairs. The smaller children they apparently did let in didn't seem to have any kind of support and could even slip out.

    "No worry, we use interrupts!" Yeah, right. Idiots.

  • This submission was voted #5 at the PDC05 Show Off event.

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