A consortium consisting of Computer Resources International A/S, Matra Marconi Space, Progespace and AIAI was responsible for the development of the European Space Agency (ESA) knowledge based system for the planning and scheduling of activities for spacecraft assembly, integration and verification (AIV). The system supports the entire AIV life cycle, i.e. not only scheduling of the activities but also monitoring of plan execution and the plan repair phases. State of the art knowledge based techniques have been applied in the planning/scheduling process: preconditions and effects on the spacecraft configuration of individual activities can be stated and used for verification of the plan logic. The system allows scheduling of activities to be performed either manually or automatically using resource levelling. The system was delivered to ESA/ESTEC last year.

OPTIMUM-AIV is now being operationally applied to the strategic planning of the production of ARIANE IV equipment bays. This activity frequently requires the plans to be updated due to non-availability of equipment, test failures, etc.


Arentoft, M.M., Fuchs, J.J., Parrod, Y., Gasquet, A., Stader, J., Stokes, I. and Vadon, J. (1991) Optimum-AIV: A Planning and Scheduling System for Spacecraft AIV, Future Generation Computer Systems, Volume 7, Issue 4, May 1992, Pages 403-412. [PDF Format]

Arentoft, M.M., Parrod, Y., Stader, J., Stokes, I. and Vadon, J. (1991) OPTIMUM-AIV: A planning and scheduling system for spacecraft AIV, Telematics and Informatics, Volume 8, Issue 4, 1991, Space Applications of Artificial Intelligence, Pages 239-252. [http://www.sciencedirect.com/science/article/pii/S0736585305800516] [PDF Format]

Parrod, Y., Valera, S. (1993) Optimum-AIV, A Planning Tool for Spacecraft AIV, in Preparing for the Future, Vol. 3, No. 3, pp. 7-9, European Space Agency. [HTML Format]

Aarup, M., Arentoft, M.M., Parrod, Y., Stokes, I., Vadon, H. and Stader, J. (1994) Optimum-AIV: A Knowledge-Based Planning and Scheduling System for Spacecraft AIV, in Intelligent Scheduling (eds. Zweben, M. and Fox, M.S.), pp. 451-469, Morgan Kaufmann.

Responsive Planning and Scheduling Using AI Planning Techniques - Optimum-AIV - Austin Tate - in "Trends & Controversies - AI Planning Systems in the Real World", IEEE Expert: Intelligent Systems & their Applications, Vol. 11 No. 6, pp. 4-12, December 1996 - [Text Format]

Return to AIAI Home Page