kevin's website

Theme 3


3.1.1 Advanced Development

  1. reduce risk by analysis, simulation, development, prototyping.
  2. risk managemnt requires a well-defined system concept
  3. Concept definition -specs concept-> Adcvanced Development -validated developmental model-> engineering design
  4. The Systems Engineering Method!

3.1.2 Requirements Analysis

Translate system spec to critical subsystems/components spec and identify high risk components for advanced development.

  1. look at system functional specifications first
  2. identify components requiring advanced development
  3. what type of development is appropriate

3.1.3 Functional Analysis and Design

Analysis and simulation to resolve exactly what is required of components.

  1. refine from concepot defnition
  2. look for:
  3. Redo functional design with th eaboveanalysis in place

3.1.4 Prototype Development

Identify inpolementation issues. design, develop, build critical components.

  1. where cant simulate/analyse; design build and test
  2. identify problem areas in selecting what to prototype
  3. choose level of development carefully
  4. apply concurrent engineering. bring logistics, produciton & maintenance experts into advanced development
  5. use rapid prototyping
  6. test only what you need ot validate

3.1.1 Development Testing

Test plan for critical element testing. Conducting tests. Feedback deficiencies.

  1. have a sound test plan, procedures and analysis lna in place
  2. create asuitable test environment
  3. conduct tests
  4. analysis of test results
  5. plan for correcting deficiencies or relaxing requirements


3.2.1 Engineering Design

  1. Implementing the system buildiung blocks. all about DESIGN!
  2. All components must be materialized at the end of this phase

3.2.2 Requirements Analysis

Verify requirements for consistency and completeness. Identify requirements for interanl and external interactions.

  1. start with the system specs and reevaluate for completeness, relevance, consistency etc.
  2. focus on medium risk requirements not developed during advanced development.
  3. consider user and environmental interface requirements
  4. assembly and installation requirements now important (no design alterations on site)

3.2.3 Functional Analysis and Design

Analyse component interactions. Analyse detailed user interactions. Design and prototyping interfaces.

  1. focus on components
  2. modular configuration
  3. sectioning functional elements/units
  4. user interface functionality

3.2.4 Component Design

Preliminary and Detailed hardware designs (with reviews and interfaces). Prototype engineered components.

  1. Preliminary Design
  2. Detail Design


Test components, correct deficiencies and document.

3.2.5 More Component Design Considerations

how does SE fit into this stage?

3.2.1 More Detail Design Considerations

design for production 1. reasonable tolerances 1. common manufacturing processes 1. use OTS componernst as much as possible - lets other tak erisk and development costt - not wise for proprietary IP specific stuff 1. design for automated manufacturing 1. stadardized circuitry 1. minimal "hand tuning" 1. software progrmmable where possible


3.3.1 Integration and Evaluation

engineering desing -> integration and evaluation -> produciton and development

  1. test engineers take lead in conducting and analysis of tests
  2. design engineers involved in test equipment requierements
  3. SE involved in test planning
  4. All are involved in test architecture

HIGH pressure!

3.3.2 Test Planning and Preparation

3.3.3 System Integration

  1. integrate bottom up (components inbto subsystems then subsystems into systems)
  2. incremental testing needs equipment to "simulate" the missing parts
  3. make sure everything is qualified (hardware, software, people, equipment)

3.3.4 Subsystem Integeration

start with the subsystems that only use external inputs and simulate these inputs with equipment. Qualify the output then use as test equipment

3.3.5 Developmental Subsystem Testing

3.3.6 Operational Teset and Evaluation