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Team Vision for Build & Test Prep Phase
Summarize:
- What did your team plan to do during this phase?
- Our team planned to receive orders and inventory them. We then planned to come up with a more detailed plan for the coming phases.
- Our team planned to receive orders and inventory them. We then planned to come up with a more detailed plan for the coming phases.
- What did your team actually accomplish during this phase?
- Our team inventoried our many purchase orders, and determined what was missing. We ordered more parts based off of research. We talked with Gary about our design, and received feedback that will require redesign and further purchasing.
Inventory
Electrical BOM
A large majority of the parts needed for the electrical subsystem have been received. A few recent purchases constitute the orange region. All parts are expected to be received within the course of a week or two.
Mechanical BOM
The mechanical BOM has all parts required to start manufacturing as of last phase. With new changes being implemented, the mechanical BOM will be updated to reflected the changes made.
Test Plan Summary
| Engineering Requirement | Importance | Source | Name | Method | Units | Lowest Value | Ideal Value | Max Value | Test Plan |
| 4 | Medium | CR1, CR8 | Switching Test | Electrical Test | Time (ms) | 0 | 0 | 20 | 1 |
| 11 | Medium | CR 1 | Power Test | Power | W | 120 | 300 | 500 | 2 |
| 1,2,15,16 | Medium | CR9, CR12 | Tilt Test | Degree of Tipping | Degrees | 5 | 10 | 20 | 3 |
| 9 | Medium | CR10, CR11 | Module Pick Up and Move | Manual Lift | Pounds | 30 | 40 | 50 | 4 |
| 6 | Medium | CR9 | Standing | Observation | Binary | Fail | Pass | Pass | 5 |
| 7 | Medium | CR6, CR3 | Assembly From Packaging | Time Study | Time | 10 | 15 | 30 | 6 |
| 8 | Medium | CR6, CR4 | Assembly From Transport | Time Study | Time | 3 | 5 | 10 | 7 |
| 17 | Medium | CR2, CR9 | Physical Load Test | Applying Loads | Pounds | 50 | 100 | 200 | 8 |
| 5 | Medium | CR12 | Vibratory Test | Modeling | Binary | Fail | Pass | Pass | 9 |
| 10 | Medium | CR11 | Sizing Test | Modeling | Binary | Fail | Pass | Pass | 10 |
| 13 | Medium | CR9, CR16 | Weatherproofing Test | Water Spray | Standards | IP12 | IP23 | IP23 | 11 |
| 18 | Medium | CR19 | Modular, Replaceable Parts | Physical Testing | Time | 10 | 15 | 20 | 12 |
Our team has the space required to start the electrical testing, rows 1 and 2. The rest of the tests require the cart to be fully assembled.
Budget
Risk and Problem Tracking
Risks
One risk was modified, 9, and one risk was added, 35. These changes can be seen below and the rest of the risks in the following document: Updated Risks MSD II .
The risk of us going over budget was lowered to a 1 for likelihood and a 1 for severity. We have all of our parts ordered and the required design changes are projected to only be around $20. We added a risk for deliverables being too late. This was added to account for any delays we may experience due to required design changes. This is a 3 likelihood, since redesigns were required, and a 1 severity because they should not set us back too much.
Problem Tracking
The only problem that requires corrective action at this point is a re-design of some of the welded assemblies that need some changes to make them easier to fabricate.
Problem Tracking Live Document
The re-design will change the upper assembly of the scissor module to be welded in sections. The sections highlighted in the same color below will be welded (if there are multiple connected parts in the section) and then those sections will be bolted to each other instead of the entire assembly being welded.
Design Review Materials
Include links to:
- Notes from review
- Action Items
Plans for next phase
- As a team, where do you want to be in three weeks at your next review?
- As a team we hope to have a working solar module subsystem. With this finished system we will be able to carry out test plans for power switching. While we are doing this, hopefully the machine shop will be processing our materials for the other subassemblies.