This is carving-up the system cloud, top-down Functional Architecture-1 Functional Architecture-2 Like Kung Fu
Murry, Steve, Morning On-Air Personality has reference to this Academic Journal, PHwiki organized this Journal The Engineering Design of Systems: Models in addition to Methods Buede – Chapter 7 Functional Architecture Development Edited Mar. 2013, Jun 2015 Above Notoriously, Deconstructivist Architecture both reveals how it functions, in addition to also has weird, attention-getting features to make you question that it does what it should. Process, rule based approach Design, creativity, derived material WHAT WHAT HOW Why do we need the functional architecture ESD is good, but we need to provide more detail to our model of the system. i.e. – What goes on inside the main function Major functions provide a clearer view of architecture in addition to interfaces. Related to product architecture, modularity, in addition to integral/modular designs. Every system has an architecture sometimes it is really good, sometimes really bad. M. Collins.
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This is carving-up the system cloud, top-down A simple example it controls lighting: Functional Architecture-1 The logical/functional architecture defines what the system must do – it is a decomposition or partitioning of the systems top-level function. Functional Architecture-2 A logical model of a functional decomposition plus the flow of inputs in addition to outputs, to which input/output requirements have been traced to specific functions in addition to items (inputs, outputs, in addition to controls) A logical model that captures the trans as long as mation of inputs into outputs using control in as long as mation. This definition adds the flow of inputs in addition to outputs throughout the functional decomposition; these items that comprise the inputs in addition to outputs are commonly modeled via a data model (see Chapter 12). An IDEF0 model without any mechanisms is used as the modeling technique in this chapter to represent the functional architecture at this level of detail.
Like Kung Fu This is a skill in addition to an art. This is where the systems engineer really provides benefit in addition to value. Image from http://www.pathsatlanta.org/2009/04/10/is-kung-fu-a-martial-art/ Functional Architecture Process Figure 7.1 Ok, how do we create this Defining Functional Partitions Use operating modes Use outputs Use inputs & controls Use Hatley-Pirbhai template Slide 15 Ulrich in addition to Eppinger Energy/Material/Signal Flows Slide 17 Use Miller Living Systems template Slides 18 – 20
Terminology Mode is a distinct operating capability of the system during which some or all of the systems functions may be per as long as med to a full or limited degree State of the system is a static snapshot of the set of metrics or variables needed to describe fully the systems capabilities to per as long as m the systems functions Decomposition vs. Composition Decompositon (top-down) Partition system function a level at a time Need sound definition of all inputs & outputs Need ESD Composition (bottom-up) Define many functionalities (bottom-level functions), simple scenarios Synthesize functional hierarchy from many bottom-level functions Not likely to omit things Its historic, but not necessary, to do the top one first, followed by the bottom one. Middle-Out Approach Combination of the two. Bottom get sense of the system, simple functionalities in addition to scenarios. Top decomposition that matches top-level physical architecture. Refer to functionalities.
Buede Guidelines Decomposition/Top Down System is an update or variation of an existing system. Composition System is unprecedented or radical departure of existing systems. Basic Approaches or Templates Operating Modes a function as long as each operating mode (a software system) Output Input/Control a function as long as each Hatley-Pirbhai extends Input / Processing / Output Adds user interface processing, maintenance in addition to self-testing processing Hatley-Pirbhai Template Figure 7.2
Hatley-Pirbhai Decomposition Figure 7.4 Energy/Material/Signal Flows Decomposition Ulrich in addition to Eppinger Living Systems Template, 1 Subsystems that Process Both Matter-Energy in addition to In as long as mation 1. Reproducer, the subsystem that is capable of giving rise to other systems similar to the one it is in. 2. Boundary, the subsystem at the perimeter of a system that holds together the components that make up the system, protects them from environmental stresses, in addition to excludes or permits entry to various sorts of matter-energy in addition to in as long as mation. Table 7.1 Biomimicry or biomimetics is the examination of nature, its models, systems, processes, in addition to elements to emulate or take inspiration from in order to solve human problems.
Living Systems Template, 2 Subsystems that Process Matter-Energy 3. Ingestor, the subsystem which brings matter-energy across the system boundary from the environment. 4. Distributor, the subsystem that carries inputs from outside the system or outputs from its subsystems around the system to each component. 5. Converter, the subsystem that changes certain inputs to the system into as long as ms more useful as long as the special processes of that particular system. 6. Producer, the subsystem that as long as ms stable associations that endure as long as significant periods among matter-energy inputs to the system or outputs from its converter, the materials synthesized being as long as growth, damage repair, or replacement of components of the system, or as long as providing energy as long as moving or constituting the systems outputs of products or in as long as mation markers to its suprasystem. 7. Matter-energy storage, the subsystem that retains in the system, as long as different periods of time, deposits of various sorts of matter-energy. 8. Extruder, the subsystem that transmits matter-energy out of the system in the as long as ms of products or wastes. 9. Motor, the subsystem that moves the system or parts of it in relation to part or all of its environment or moves components of its environment in relation to each other. 10. Supporter, the subsystem that maintains the proper spatial relationships among components of the system, so that they can interact without weighting each other down or crowding each other. Table 7.1 Living Systems Template, 3 Subsystems that Process In as long as mation 11. Input transducer, the sensory subsystem that brings markers bearing in as long as mation into the system, changing them to other matter-energy as long as ms suitable as long as transmission within it. 12. Internal transducer, the sensory subsystem that receives, from subsystems or components within the system, markers bearing in as long as mation about significant alterations in those subsystems or components, changing them to other matter-energy as long as ms of a sort which transmitted within it. 13. Channel in addition to net, the subsystem composed of a single route in physical space, or multiple interconnected routes, by which markers bearing in as long as mation are transmitted to all parts of the system. 14. Decoder, the subsystem that alters the code of in as long as mation input to it through the input transducer or internal transducer into a private code that can be used internally by the system. 15. Associator, the subsystem that carries out the first stage of the learning process, as long as ming enduring associations among items of in as long as mation in the system. 16. Memory, the subsystem that carries out the second stage of the learning process, storing various sorts of in as long as mation in the system as long as different periods of time. 17. Decider, the executive subsystem that receives in as long as mation inputs from all other subsystems in addition to transmits to them in as long as mation outputs that control the entire system. 18. Encoder, the subsystem that alters the code of in as long as mation input to it from other in as long as mation processing subsystems, from a private code used internally by the system into a public code which can be interpreted by other systems in its environment. 19. Output transducer, the subsystem that puts out markers bearing in as long as mation from the system, changing markers within the system into other matter-energy as long as ms which can be transmitted over channels in the systems environment. Table 7.1 Some Examples !! Elevator Google Exercises: Machine monitor That pesky lawn mower A few more examples Your choice
Elevator Example – ESD Elevator Functional Decomposition ( ) around arrow head = tunneling (page 72)
How did we get here Create an IDEF0 block diagram with all the H-P blocks Which ones do we need Which ones to combine Do this mentally. IDEF0 Page Structure Figure 3.5; Table 3.2
Google Build it yourself. Do as long as everything: Parallelize Distribute to atomic level Compress Secure Cache Make redundant The Exterior Picture Physical Architecture
Additional Decomposition Examples ATM Machine
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