Modellering av kontrollenhet för JAS39 Gripens hjälpkraftsystem
Sammanfattning: Simulation is an important tool for verification and validation. Time and money can be saved using simulation instead of flight tests. Achieving satisfying results demands precise models. A new model for JAS39 Gripen’s auxiliary power and engine starting system, APESS, is presented. The objective of this thesis is to develop a more accurate model of APESS and its control unit, APECU. The model was created in MATRIXX. Models are created in MATRIXX using a graphical interface. In MATRIXX, it is possible to generate C-code which is a useful feature. Models for the APECU, APU, valves and sensors has been created. The models are then tested and verified using data from test flights. The result is a more accurate model for SYSIM. The created control unit model can be used in Easy5. Simulation in MATRIXX has become a useful educational tool. One model for three purposes will decrease the amount of nesesary work each system or model update brings. Keeping the model description up to date is also easier.
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