An integrated design optimisation approach for systems with dependencies
Jelena Riauke
Lisa Jackson
2134/9303
https://repository.lboro.ac.uk/articles/conference_contribution/An_integrated_design_optimisation_approach_for_systems_with_dependencies/9221357
The design of a safety system is critical if functionality is to be maximised and
consequences reduced. There is often a trade off between the performance
obtainable and the resources available. To address these balancing issues,
which are usually impractical by hand for a designer, multi-objective
optimisation techniques can be used. When considering safety systems there
is often the situation of dependencies between components, for example with
regard to maintenance. To evaluate the system behaviour in these situations
an appropriate analysis method is required. The aim of this paper is to
present an optimisation approach which integrates traditional methods of
system failure evaluation. The combined method uses the fault tree analysis
technique to represent the causes of failure on demand of the system, the
binary decision diagram and Markov methods for system quantification (for
independent and dependent sections of the fault tree respectively), and the
Improved Strength Pareto Evolutionary Approach (SPEA2) to find the most
optimal design solution. The end product is a mechanism to yield the best
design option for safety systems incorporating dependencies. The paper
presents the principles of the method and a case study to illustrate how the
method is applied. The results produced, along with conclusions are
provided.
2012-01-23 13:33:21
untagged
Engineering not elsewhere classified