Complexity Measurement Of Cyber Physical Systems

abstract: Modern automotive and aerospace products are large cyber-physical system involving both software and hardware, composed of mechanical, electrical and electronic components. The increasing complexity of such systems is a major concern as it impacts development time and effort, as well as, i...

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Other Authors: Singh, Gurpreet (Author)
Format: Dissertation
Language:English
Published: 2011
Subjects:
Online Access:http://hdl.handle.net/2286/R.I.14512
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spelling ndltd-asu.edu-item-145122018-06-22T03:02:28Z Complexity Measurement Of Cyber Physical Systems abstract: Modern automotive and aerospace products are large cyber-physical system involving both software and hardware, composed of mechanical, electrical and electronic components. The increasing complexity of such systems is a major concern as it impacts development time and effort, as well as, initial and operational costs. Towards the goal of measuring complexity, the first step is to determine factors that contribute to it and metrics to qualify it. These complexity components can be further use to (a) estimate the cost of cyber-physical system, (b) develop methods that can reduce the cost of cyber-physical system and (c) make decision such as selecting one design from a set of possible solutions or variants. To determine the contributions to complexity we conducted survey at an aerospace company. We found out three types of contribution to the complexity of the system: Artifact complexity, Design process complexity and Manufacturing complexity. In all three domains, we found three types of metrics: size complexity, numeric complexity (degree of coupling) and technological complexity (solvability).We propose a formal representation for all three domains as graphs, but with different interpretations of entity (node) and relation (link) corresponding to the above three aspects. Complexities of these components are measured using algorithms defined in graph theory. Two experiments were conducted to check the meaningfulness and feasibility of the complexity metrics. First experiment was mechanical transmission and the scope of this experiment was component level. All the design stages, from concept to manufacturing, were considered in this experiment. The second experiment was conducted on hybrid powertrains. The scope of this experiment was assembly level and only artifact complexity is considered because of the limited resources. Finally the calibration of these complexity measures was conducted at an aerospace company but the results cannot be included in this thesis. Dissertation/Thesis Singh, Gurpreet (Author) Shah, Jami (Advisor) Runger, George (Committee member) Davidson, Joseph (Committee member) Arizona State University (Publisher) Mechanical engineering Complexity eng 222 pages M.S. Mechanical Engineering 2011 Masters Thesis http://hdl.handle.net/2286/R.I.14512 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2011
collection NDLTD
language English
format Dissertation
sources NDLTD
topic Mechanical engineering
Complexity
spellingShingle Mechanical engineering
Complexity
Complexity Measurement Of Cyber Physical Systems
description abstract: Modern automotive and aerospace products are large cyber-physical system involving both software and hardware, composed of mechanical, electrical and electronic components. The increasing complexity of such systems is a major concern as it impacts development time and effort, as well as, initial and operational costs. Towards the goal of measuring complexity, the first step is to determine factors that contribute to it and metrics to qualify it. These complexity components can be further use to (a) estimate the cost of cyber-physical system, (b) develop methods that can reduce the cost of cyber-physical system and (c) make decision such as selecting one design from a set of possible solutions or variants. To determine the contributions to complexity we conducted survey at an aerospace company. We found out three types of contribution to the complexity of the system: Artifact complexity, Design process complexity and Manufacturing complexity. In all three domains, we found three types of metrics: size complexity, numeric complexity (degree of coupling) and technological complexity (solvability).We propose a formal representation for all three domains as graphs, but with different interpretations of entity (node) and relation (link) corresponding to the above three aspects. Complexities of these components are measured using algorithms defined in graph theory. Two experiments were conducted to check the meaningfulness and feasibility of the complexity metrics. First experiment was mechanical transmission and the scope of this experiment was component level. All the design stages, from concept to manufacturing, were considered in this experiment. The second experiment was conducted on hybrid powertrains. The scope of this experiment was assembly level and only artifact complexity is considered because of the limited resources. Finally the calibration of these complexity measures was conducted at an aerospace company but the results cannot be included in this thesis. === Dissertation/Thesis === M.S. Mechanical Engineering 2011
author2 Singh, Gurpreet (Author)
author_facet Singh, Gurpreet (Author)
title Complexity Measurement Of Cyber Physical Systems
title_short Complexity Measurement Of Cyber Physical Systems
title_full Complexity Measurement Of Cyber Physical Systems
title_fullStr Complexity Measurement Of Cyber Physical Systems
title_full_unstemmed Complexity Measurement Of Cyber Physical Systems
title_sort complexity measurement of cyber physical systems
publishDate 2011
url http://hdl.handle.net/2286/R.I.14512
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