Team Vision for System-Level Design Phase
The plans for the systems design phase of the development process were to focus on generating potential ideas for the design and to better understand the requirements of the project so that we could select the best systems for our product development.
In the system design phase our team completed research on different methods of modeling the elbow, the anatomy of the arm, and structure alternatives to PASCO units. We also began to create system designs to lead to our planned designed proposal. This was done by designing a functional decomposition, re-visiting our bench-marking plans, refining our concept development plans, creating a morphological chart of potential system ideas, considering the feasibility of potential system solutions, and deciding on our concept selection choices.
The full status of the action plans for this phase is:
- Review procedure of current lab (do a run through if possible) - Obtained lab, did not do run through
- Discuss access to lab space and material w/ Dr. Bailey - 100% Completed
- Get computer model from contact - 100% Completed
- Determine placement for electrodes on human subject - Dropped, decided EMG data was not necessary
- Collect human EMG data - Dropped, decided EMG data was not necessary
- Collect data on human dimensions, range of motion, etc. - 100% Completed
- Research literature, other universities' solutions - 100% Completed
- Research biomechanical principals of the arm - 100% Completed, will be ongoing as necessary
- Research other elbow/wrist modeling systems - 100% Completed
- Consult RIT athletic trainers for lesson on bicep biomechanics - 100% Completed
- Consult individuals w/ biomechanics experience (Professors, TA's, tutors, etc.) - 100% Completed, will be ongoing as necessary
- Consult PA students - Dropped, did not need additional reference
- Obtain air muscle to use and test - Dropped, through system analysis and communication with our customer we decided not to use air muscles
- Interview previous students & TA's about their experience - Dropped, will question in future if necessary
- Reverse engineer current model - Dropped, current system is simple enough and our BMEs have assembled/disassembled it before
- Research possible alt. to PASCO - 100% Completed
- Test strength limits, material properties of PASCO parts - Dropped, PASCO alternative was decided upon early in the phase
- Analyze budget, plan costs and expenses - 100% Completed for phase, ongoing
- Research and test PASCO sensors & software - 100% Completed
The anatomy of the system that was researched during this period is summarized below:
The Benchmarking assessment can be found in this document _Benchmarking Document P17082
Feasibility: Prototyping, Analysis, Simulation
- The Running Feasibility Analysis table can be found in this document_Feasibility analysis
Paper Prototype of Model
Morphological Chart and Concept Selection
Designs and FlowchartsDesigns and Flowcharts will be completed on Phase 3. Refer to Plans and Schedule.
- The Running risk assessment can be found in this document_Risk Assessment P17082
Design Review Materials
Issues and Concerns
- Anatomically accurate model (joints modeled properly and strings attached in correct locations)
- Material durability (able to withstand years of use without failure)
Plans for next phase
For the next review we plan on verifying and refining the prototype by standards and tests that we create. These standards will be developed from the re-visited risk assessment and solution plans we produce. Then we plan on developing and designing the plans for the joints of the arm. We hope to be able to answer the following questions: How do we plan on building the bones and joints? What are the largest risks for our selected systems? How will we verify our selected systems and prototypes?Project Plan Document P17082 The major points of the action items for this next planning sections are:
- Prototyping & Modeling, focusing on the bones, the joints, and the accurate ranges of human motion.
- Plan Updates, including the risks, risk responses, plan diagrams, and test plans.
- Subsystem checks and evaluations, focusing on the main subsystems of the project: the joints, the structure, and the motion systems