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SE case 3 – product architectures

example A

A simple example of how product architectures can be created, analysed and maintained.

The assignment is as follows:

  1. identify the architectures for system sys (with has architecture as relation)

    sys –ha–> { FSA, PSA, FuSy }
    * functional system architecture (FSA)
    * physical system architecture (PSA)
    * functional safety architecture (FuSy)
  2. create the functional system architecture (use relation type consists of)

    (default system variant)
    FSA —co-x–> {
    FSA_el_01 –co–> { FSA_el_05 –co–> { comp_A, comp_B, comp_C, comp_D }},
    FSA_el_02 –co–> { comp_E, comp_F, comp_G, comp_H },
    FSA_el_03 –co–> { FSA_el_06 –co–> { comp_I, comp_J }},
    FSA_el_04 –co–> { comp_L, comp_K },
    FSA_el_07a –co–> { comp_M, comp_N, comp_O } }

    (variant 07b and optional comp_O)
    FSA –co-x-var_07b–>
    FSA_el_07b –co–> { comp_N, comp_P },
    FSA_el_07b –co-opt_comp_O–> { comp_O }
  3. create the physical system architecture (PSA) with relation type is assembled from:

    PSA –iaf–> {
    PSA_el_01 –iaf–> {
    PSA_el_03 –iaf–> { comp_A, comp_B, comp_C, comp_D },
    PSA_el_05 –iaf–> { comp_E, comp_F, comp_G, comp_H }},
    PSA_el_02 –iaf–> {
    PSA_el_06 –iaf–> { comp_M },
    { comp_I, comp_J, comp_K, comp_L }},
    { comp_M, comp_N, comp_O, comp_P }};
  4. create the functional safety architecture (FuSy), using fusy related to as relation type

    FuSy –frt–> {
    FuSy_el_01 –frt–> {
    FuSy_el_02 –frt–> { comp_D, comp_H },
    FuSy_el_03 –frt–> { comp_L },
    },
    FuSy_el_04 –frt–> { comp_O },
    { comp_P },
    };

Instructions Configueres:

Default configuration

  • select “consists of” from the relations dropdown (button bottom right);
  • select “functional system architecture” (on the left side of the graph); the default configuration of the system is shown. This includes FSA element var 07a and excludes comp_P.
Default system configuration, by selecting functional system architecture as viewpoint and consists of as relation type. The elements in the configuration have an orange background.

Assemble the default configuration in the physical system architecture

To see where the individual components (building blocks) fit in the physical architecture, follow these steps:

  1. Select consists of from the relation types dropdown list
  2. Double-click functional system architecture to set the viewpoint
  3. Select the configure tab (this will show the Configuration table, including the intermediate elements (green background) and the selected elements (orange background)
  4. In the Select assembly item dropdown, select physical system architecture, and is assembled from in the select assembly relations dropdown list.
  5. Select radio button Distinction to get the image below
The image shows the location of the individual components in the physical architecture. E.g. comp C is assembled in PSA element 03, which in turn is assembled in PSA element 01, which in turn is assembled in the overall system architecture.

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