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IFG Challenges


IFG members were invited to contribute with challenge problems from their specific domain, which we can use as inspiration to develop multi-disciplinary models using DESTECS technology. The best challenges will be carried out by the consortium members in 2011. During the consortium meeting in Haarlem, the four best challenges have been chosen. Among the criteria for the selection, the most important ones were the scope (can it be done in two man-months) and the domain (is it complementary to what we already do in the project). The challenge winners are listed below.

Crisplant (DK) Tilt-Tray Sortation System


Crisplant delivers integrated and automated sortation solutions for customers within the airport, postal, parcel, warehouse and distribution industries. The goal is to be able to simulate a part of a sortation machine to see how good the model will be able to simulate the functionality of a real challenge problem.

Terma (DK) Flare dispenser for a fighter pilot to distracting heat seeking missiles


To counter enemy threats like incoming missiles, a fighter pilot can dispense a sequence of flares, which are burning magnesium balls, to distract heat seeking missiles. The sequence of flares is specially designed to “draw” a thermal picture of the aircraft that the missile will target instead. What happens if the aircraft is doing a manoeuvre during the dispensing of flares?

ESA-ESTEC (NL) Planetary Rover


The ESA automation robotics section wants an investigation of the planetary rover locomotion modes.

ASML (NL) Machine and material damage control


In the semi-conductor industry, Moore’s law tells us that the feature size of electrical devices is decreasing for the past 25 years. The lithography tools of ASML contribute to this trend by offering increasingly detailed features. On the other hand to keep cost within an acceptable level, the throughput of the lithography systems has to be increased also. This results in technical solutions with higher dynamic behaviour and very complex interactions between different machine sub-systems. Mechanical passive devices like for example springs are gradually changed to active dampening devices that are fully controlled by hardware and software. To prevent damage and to ensure safety on these active systems machine and material damage control (MMDC) has proofed to be essential. The engineering patterns for this rapidly growing domain are new and the best architectural patterns and implementations are subject of investigation.

The ASML case is positioned at safety systems that protect the area of the Wafer Stage (WS) and the Projection Optics. The planar motor, which is used for the WS long stroke movements, is servo controlled in 6 degrees of freedom. Therefore it has the capability to accelerate at least as much in vertical as in horizontal direction. Vertical travel is limited due to nearby static objects on the metro frame. A set of damage control measures is required to prevent the WS from crashing in one of these objects.

Some questions that have to be researched are:

  • The line of reasoning from business cases to architectural solutions?
  • The trade-off between the engineering disciplines mechanics, electronics and software?
  • The reaction time of the solutions?
  • The potential margin that is available? Can we optimize the current solutions?
  • The impact of (partly) failing sensors and actuators on the safety mechanism itself. What is the impact of these types of failures on the reliability of the safety mechanism?