Results

Pictured above is the Generation 3 prototype that we developed with the help of MWI. This the last of our cooperation with MWI on this project.
The picture was taken at the Undergraduate Symposium at Northern Arizona University.

Final Presentation

Succeses and failures

  • Primary Goal: Reduction in Harmonic Vibrations ............................ Success
  • Secondary Goal: Motor Driven Arms .............................................. Approximately 70% completed
  • Secondary Goal: Device Meets Certified European Standards ...... Success
  • Tertiary Goal: Increase Mobility ....................................................... Success

  • As our project wraps up, the reality of it is that we have constructed a Generation 3 prototype due to time constraints. The way that MWI prototypes and developes
    products is through stages of prototypes where generation 1 is considered to be a concept, like Solidworks, and a generation 5 is a production ready model. Our client
    was extremely satisfied with our work on the reduction of harmonic vibrations. We fell short on the motor controlled aspect of the project due to time constraint.
    It was challenging, being mechanical engineering students, to turn to coding arduino and learning how to control all the components of the motors. The lack of success for
    this goal ultimately stems from running out of time. The rest of our goals were met through the design process and the natural progression of the project.
    Moving forward, there are a few suggestions that we have for our client. We suggest that 90 degree gearboxes be substituted with the current gearbox to reduce interference with the arms.
    We recommend the use of water containers as adjustable weight counter balances for the arms. Finally, before the product is in production phase, a proper risk assesment should be completed.

    Knowledge Gained

    As a team we have learned a large amount from this project. First off, we learned a great deal about the NRL arch and its applications. We gained experience with the prototyping process in industry.
    We learned about coding with arduino and control systems involved with motors and encoders. Finite Element Analysis and vibrations were also heavily used in this project. As a team though, we strengthened
    our communication skills and responsibilty.

    Acknowledgments

    We would like to thank everyone who helped us along the way and give a special thanks to the following people:


  • Project Sponsor ........... Jeff Peebles
  • Machinists ................... Ron and Larry Frey
  • Electritian .................... Mike Bolar
  • Team Mentor ............... Dr. David Trevas
  • Graduate Assistant ...... Amy Swartz
  • Professor ..................... Alarick Reiboldt