SYSTEM LIFE-CYCLE - SYSTEM LIFE - THE MODEL - BASED TECHNICAL DIAGNOSTICS - A VIEW ON HOLISTIC MODELING

Man-made systems are becoming more and more complex, so there is a nec essity to analyse and simulate their dynamic behaviour over their whol e life. To deal with these problems we require a holistic model of the operating system which includes the concept of life. This is defined on the basis of energy internally dissipated in the system, when it is treated as open and energy-transforming. The holistic model of a syst em can be very useful for the space-time-life simulation of its condit ion at the design stage and for a model-based diagnosis at the life st age. This procedure will substantially increase the reliability of ope rating systems and reduce the total life cycle costs.