Table of Contents
For all documents created and utilized by the team during the systems level design phase visit the following link:Systems Level Design Documents.
BenchmarkingThe team has been doing a great deal of benchmarking to generate ideas for our design. February 19th the team visited the dyno located in the GIS building on RIT's campus. Our main objective was to view the graphical user interface, the load varying application and other features that current dyno's feature. The photos below show a few of our findings.
The team has also found similar projects done on the web which is helping to generate design concepts for the containment and modeling of the bench itself as seen in the photo below:
A similar testing unit available for purchase: http://www.brusa.eu/en/products/measurement-test-equipment/test-benches/motor-test-bench.html
Illinois Institute of Technology EV Test Bench: http://share.iit.edu/handle/10560/3226
Schnieder Electric EV Motor Test Bench: http://www2.schneider-electric.com/documents/product-services/en/training-workstations/energy-control/powder-brake-speed-controller-bench.pdf
These are the functions the test bench is required to complete and will be used in further concept development
The team brainstormed possible solutions to the needed functions for the test bench and organized them into a Morphological Chart for further use in concept development.
Using the Morphological Chart,the team brainstormed four potential concepts utilizing different solutions.
Pugh ChartBased on the concept selection seen above the team developed criteria which could be used in a Pugh Chart to analyze the pros and cons of each concept, making sure to rotate the datum so that each concept was being compared to each other. Once the team discussed the options we circled in red the devices and methods we want to proceed with in the final concept selection.
Systems ArchitectureBased on the concept selection process the team narrowed down the options for a systems level design.
FeasibilityOne of the main constraints of the project is the ability to apply a variable load to the RIT Hot Wheelz powertrain system. In order to properly source a load varying method it is important to know the loads that need to be varied. Click here to view a summary of the feasibility analysis for a load varying device. All of the detailed calculations for the various loading situations can be found by clicking here.
Due to the high speeds the motors are expected to turn at the team also completed feasibility calculations to ensure the components could capture the data and display the data in near real time conditions. Click here to view a summary of the feasibility analysis for the electrical components.
Risk AssessmentOur team has identified possible risks that need to be accounted for in the design, build and use of the test bench. We have given each risk a different level of importance so that we know what to focus our efforts on in order to avoid to minimize error and accidents throughout the process. Click here to view our most current list of potential risks.
Systems Design ReviewOur team assembles a conclusive presentation at the end of each review to summarize our work. Phase 2: Systems Design Review Presentation
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