Team Vision for System-Level Design PhasePhase Summary:
- Created a functional decomposition that outlines the key functions of the standing wheelchair
- Incorporated Customer and Engineering Requirements to come up with ideas for each 5-10 key functions
- Created concepts from these ideas
- Used a Pugh Chart to compare each concept to the current prototype
- Updated the risk assessment
- Identified subsystems and how they are all related
- Continued to be in contact with customers, PT, and wheelchair specialists
- Updated the overall schedule to better outline the rest of the semester
- Created 3 week plans for each member to outline tasks until the next phase review
Functional DecompositionTo view the latest updated version of the Functional Decomposition, click on the following link Functional Decomposition
To view the previous version, click on the following link Functional Decomposition
To view the latest updated version of the Systems Benchmarking, click on the following link Systems Benchmarking
Morphological ChartTo view the latest updated version of the Morphological Chart, click on the following link Morphological Chart
To view the previous version, click on the following link Morphological Chart
The original concepts that were used in the first version of the Pugh Chart Analysis are seen below:
After performing a Pugh Chart Analysis and Benchmarking each option, the concepts were narrowed down to the following:
Selection Criteria (in order of most important to least important):
- Ease of use
- Availability of Resources
- Time to complete
To view version 1 of the Pugh Chart (sheet 1) and the latest updated Pugh Chart (sheet 2), click on the following link Pugh Chart
Pugh Chart Concept 1 SketchesThe main parts of Concept 1 are: The hoyer swing incorporated into the chair, and the desk tray concept. The images of these concepts are shown below.
Pugh Chart Concept 3 SketchesThe main parts of Concept 3 are: Gear and Chain mechanism for seat and back support movement, Touch Screen for PT Input Angle and Voice Controlled Lift Mechanism, Angle sensors to limit movement, Wireless second controller Modified Hoyer Sling for standing restrains.
Systems Architecture FlowchartsTo view the latest updated version of the Systems Architecture Flowcharts, click on the following link: Systems Architecture. To navigate this file, click on the desired subsystem from the first page and you will be directed to the detailed version.
The subsystem overview is seen below:
Feasibility: Prototyping, Analysis, Simulation
Hoyer Lift Swing Incorporation Feasibilty
Safety Restrains Feasibilty
Angle Limit Feasibility
Risk AssessmentTo view the latest updated version of the Risk Assessment chart, click on the following link Risk Assessment
Design Review Materials
To view the Systems Design Review Presentation, click on the following link Systems Design Review Presentation
Plans for next phase
Questions for Next Phase
- What are the critical subsystems?
- How are we going to test the critical subsystems?
- Have we demonstrated a proof-of-concept?
- Has each subsystem been adequately reviewed?
- Do the subsystems come together to form a complete system?
- What analysis can we perform to support each subsystem?
- Are the engineering and customer requirements meant?
- Are there additional feasibility tests we can perform or existing tests we should examine more?