P20006: BalanX Exercise Machine
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Systems Design

Table of Contents

Team Vision for System-Level Design Phase

During this phase our team planned to:

Accomplishments:

Functional Decomposition

Purpose

Define the total list of functions and subfunctions, based on the Customer and Engineering Requirements, that must be delivered by the final design. This will establish the need for specific concepts necessary to deliver the overall objectives of the project
Screenshot of Functional Decomposition

Screenshot of Functional Decomposition

Inputs and Source

  1. Template and Example.
  2. Project Objectives.
  3. Engineering Requirements.
  4. Benchmarking Data.

Outputs and Destination

  1. Complete list of functions that must be provided in order to satisfy the functional requirements of the entire project.
  2. Engineering Requirements are written to measure how well the functions are performed.
  3. Concepts are generated around functions identified here.

Benchmarking

Purpose

Avoid redundant work by identifying already available solutions and concept options
Benchmarking Table

Benchmarking Table

Inputs and Source

  1. PRP.
  2. Project Objective.
  3. Function Decomposition.
  4. Prior MSD EDGE sites.
  5. Customers.
  6. Vendors and users of existing or similar solutions.
  7. Literature search.
  8. Friends and associates.

Output and Destination

  1. List of best available concepts and embodiments.
  2. Criteria used for selection of best.

Concept Development

Purpose

Generate new concept options or combinations that can potentially exceed the benchmark concepts

The functional decomposition seen above helped us generate all of the high level and low level system functions that we created solutions for in the concept development exercise.

The end result of this exercise can be seen in all of the table entries of the morphological chart in the next section.

For example, see directly below for in-progress snapshots of individual concept development activities:

1. Type of exercise resistance 2. Type of workout 3. User security

1. Type of exercise resistance 2. Type of workout 3. User security

Comfortability

Comfortability

User Security

User Security

Adjustability for User

Adjustability for User

Input and Source

  1. Function Decomposition.
  2. Results of Benchmarking.
  3. Analysis and prototyping.

Outputs and Destination

List of multiple viable concept options to provide each function.

Feasibility: Prototyping, Analysis, Simulation

Purpose

  1. Confirm that the selected concepts can deliver functionality defined by the System Architecture.
  2. Define the optimal values of the most sensitive design parameters.
  3. Support the evaluation of your team's concepts with quantitative information.
CAD from Studio 9.30

CAD from Studio 9.30

CAD from Studio 9.30

CAD from Studio 9.30

Inputs and Source

  1. Engineering Requirements
  2. Concept Selection

Outputs and Destination

  1. A list of Design Parameters, Quantified Targets, and acceptable tolerances
  2. Sensitivity analysis
  3. Concept Selection

Morphological Chart and Concept Selection

Purpose

  1. Develop multiple concept options to deliver the required list of functions.
  2. Ensure that concepts (means) are available to deliver every required function.
  3. Select the optimal set of concepts that can be integrated to meet the project objectives.
Screenshot of Morph Chart

Screenshot of Morph Chart

  1. Alternative Solutions:
Screenshot of Original Solution

Screenshot of Original Solution

Screenshot of Solution 1

Screenshot of Solution 1

Screenshot of Solution 2

Screenshot of Solution 2

Screenshot of Solution 3

Screenshot of Solution 3

Screenshot of Solution 4

Screenshot of Solution 4

Screenshot of Solution 5

Screenshot of Solution 5

Concept Selection

Screenshot of Pugh Chart

Screenshot of Pugh Chart

Systems Architecture

Purpose

  1. Ensure flow of energy, info, material and structural forces as intended.
  2. Define subsystem functions, envelopes and interfaces.
Systems Architecture Chart

Systems Architecture Chart

Inputs and Source

  1. Engineering Requirements.
  2. Functional Decomposition.
  3. Concept Development.

Outputs and Destination

  1. High level description of the total system that support concept selection.
  2. Interface definition for subsystem design.

Designs and Flowcharts

Purpose

Define a high-level view of the elements required to build and operate the entire system
High Level View of Our System

High Level View of Our System

Risk Assessment

Risk Assessment

Risk Assessment

Design Review Materials

Plans for next phase


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