Functional vs. Physical Physical Architecture Functional Allocation Goal Functional Allocation Goal

Functional vs. Physical Physical Architecture Functional Allocation Goal Functional Allocation Goal www.phwiki.com

Functional vs. Physical Physical Architecture Functional Allocation Goal Functional Allocation Goal

Hicks, Cortney, Morning Show Co-Host has reference to this Academic Journal, PHwiki organized this Journal Week 6 – Systems Engineering in addition to Analysis Buede ch 8 & Wasson ch 40 – Physical Architecture Believe it or not – we’ll even apply this topic to the “Newton free” world of software! Image of “Second Life” from http://secondlifetalk.com/. Functional vs. Physical Functional What the system must do. Physical How the system will do it. Buede starts here – as long as Wasson, see slide 47! Physical Architecture Provides system resources as long as every function in the Functional Architecture Resource types : Hardware Software Facilities People Procedures

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Physical Architecture-2 Must be a Physical Architecture as long as each system associated with the system life cycle. Two types of Physical Architectures : Generic in addition to Instantiated. Physical Architecture-3 For software: We are used to having a design experience that feels free of physical limitations! Don’t like the way the world actually looks Add/change/delete your own features! Image from http://www.indiamike.com/india/chai- in addition to -chat-f73/nasa-world-wind-software-t12187/ Physical Architecture-4 For software: “Physical” means “real” – like: What families of components would we choose What “bottom up” characteristics would fit Without going all the way to naming those pieces But this is systems engineering, in addition to we also can learn from design work that does have some physical reality

Generic Physical Architecture as long as Elevator Figure 8.2 Elevator First Level Functional Model Functional Allocation: 1-1 in addition to ‘Onto’ Figure 8.4

Functional Allocation Goal Allocate Functions Components. There is great advantage to having Functional in addition to Physical Architectures match (one-to-one in addition to onto). Functional Allocation Goal There is great advantage to having Functional in addition to Physical Architectures match (one-to-one in addition to onto). When does this happen When does this not happen Product or system architecture decisions

Two Levels of Physical Architecture Generic physical architecture: description of the partitioned elements of the physical architecture without any specification of the per as long as mance characteristics of the physical resources that comprise each element Instantiated physical architecture: generic physical architecture to which complete definitions of the per as long as mance characteristics of the resources have been added The Process Generic Physical Architecture provides ‘common designators’ as long as physical resources. (No real physical items). Morphology Box to create in addition to list instantiated architectures – options as long as choice. Create many alternate instantiations to choose from. Morphological Box as long as Hammer Table 8.3 (Top row – generic components, 320 possible combinations)

Morphological Box as long as Auto Navigation Support System Figure 8.5 We can use morphological boxes with software, too Image from http://hcil2.cs.umd.edu/trs/2004-17/2004-17.html Pairwise Infeasible Combinations within a Morphological Box Hammer Example Figure 8.6

Compare lower levels to functional decomposition Is it 1-to-1 Matches first level Functional decomposition Block Diagrams of Physical Architecture (Most common graphical representation) Figure 8.7 Block diagram as long as software Image from http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgicoll=hdwr&db=bks&fname=/SGI-EndUser/RASC-UG/ch04.html.

Issues in Physical Architecture Development Functional per as long as mance, availability (cost, safety, fault tolerance), in addition to other system-wide traits. Commercial in addition to ‘product line’ factors. Operational architecture finishes this process. Looking ahead – physical architecture elements are added as mechanisms on the Functional Architecture to produce the Operational Architecture. Vehicle Theft Deterrence It’s fairly easy to underst in addition to conceptually how an effective system could work See https://www.youtube.com/watchv=Ee3L9BQQ4Gs Example- Vehicle Theft

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Vehicle Theft Example Major Concepts as long as Physical Architecture Centralized vs. Decentralized Modular vs. Integral St in addition to ardization, Serviceability ‘COTS’ components Mostly Software Example : FBI Fingerprint Identification System IAFIS: Integrated Automated Fingerprint Identification System ITN/FBI: Identification Tasking in addition to Networking segment – focus of this case study III/FBI: Interstate Identification Index segment AFIS/FBI: Automated Fingerprint Identification System segment

ITN/FBI: Identification Tasking in addition to Networking RFP identified subelements TPS: Ten-print Processing Subelement was key Processed paper cards with 10 fingerprints Organized as work stations within a workgroup (distributed system) Processed ~ 30,000 per day Scanned, converted to binary data, in addition to analyzed Images had to be compressed by at least 10 to 1 Average time to per as long as m a fingerprint image comparison was 60 seconds Time allowed as long as display of human-machine interface was 1 second from time of request Critical Design Issues as long as TPS Implementation of wavelet scalar quantization (WSQ) algorithm (hardware vs. software) Workstation capabilities Server capabilities Workflow management capabilities Communications interface Alternate Design Allocation Options Studied Figure 8.8

Development Process as long as the Physical Architecture Figure 8.3 Functional Allocation: 1-1 in addition to onto Figure 8.4 Option Creation Techniques Table 8.4

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