Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Design is currently a frame of 8020 extrusion bars, need to find a solution for the loosening of corner brackets
Analyze vendor wheelchair & our current design, brainstorm variations of existing models as well as new ideas
Acquiring work space near machine shop for our potential subsequent step of sawing off extrusion bars to more suitable lengths
Testing still remains where it was from last meeting, where we found decent component mounting locations
Accomplishments from Previous Week
Assembled 8020 frame and did a few runs
Experimentally found decent locations for components to be attached
Found that corner brackets became loose during runs, likely due to only being attached by one screw per bar
Proposed solution is to order larger, more secure brackets since size was found to not be an issue
Proposed several performance standards that can help reveal if functional requirements are being met (Ex: Eagerness to move can be a diagnostic for comfort)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Do purchase reimbursements for previous purchases to get them out of the way (Elias)
Brainstorm design ideas that adhere to current model (Ex: alternatives to harness, wheels, etc.) (All)
Brainstorm design ideas for different models (Ex: baby walker, stroller, 4-wheel dolly, . . .) (All)
Perform FBD for weight distributions across components (All)
Fill out Pugh Charts for each model idea (stretch goal) (All)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Work on adjustable extrusion frame before other ideas (email, Dec 4)
Positioning of components is key to the comfort aspect of this project (email, Dec 4)
Work on design & implementation in parallel (email, Dec 4)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Measure of success: how often our design is used (bad design if our wheelchair is set aside) (in person, week 10 meeting)
FR's: support weight of dog, allow dog to locomote & navigate, sit to stand mechanism (in person, week 10 meeting)
Analyze +/- of passive omnidirectional wheels (we have no prior knowledge) (in person, week 10 meeting)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Do more quantitative analysis (FEA, FBD) (from presentation peer review)
Affordances (from presentation peer review)
Focus on improving designs from here on out instead of looking at existing solutions (from presentation peer review)
Brainstorm design options (from presentation peer review)
Closer analysis of past options (from presentation peer review)
Single wheel option (Dyson vacuum?) (from presentation peer review)
Risks and Areas of Concern
our design not being comfortable for Bodie (are our current component positions the best we can do?)
The compatibility of parts on the frame- how they interact and if they are durable for daily usage.
Resources or Information Required but not Available
Schedule
Describe upcoming milestone
Update Gantt chart.
Potentially meet this week for brainstorming (1/10?)
meet with Dr. Yu at his convenience (email sent, awaiting reply)
Budget (list amount spent and amount remaining)
4x 8020 extrusion bars--$41.39
Loop Clamps--$12.00
corner brackets--$29.05
Home Depot trip for screws--$4.94
Amount Remaining: $2512.62 (out of $2600)
Progress on Report and Webpage