156A Weeks 9 & 10

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Still researching individual components and design options.

  • Contacting sponsor, applications engineer, and lab where spectrometer is located to determine size constraints

Accomplishments from Previous Week

• • Researched individual components, narrowed design choices

    • Arduino microcontroller

    • Ball screw and stepper motor for precise linear motion

    • Two guiding rails and linear bearings for support and precision

    • LabVIEW software interface

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Complete Risk Reduction Presentation

  • Clint - Problem Definition, Constraints and Functional Requirements

    • Javad - High Risk Areas, Team Risk Achievements

    • Nick - Spring Quarter Work Breakdown, Milestones + Gantt Chart 

    • Andrew - Outline, Set up Team Website

    • Nathan - Preliminary Design Solutions, Remaining Questions and Unresolved Issues

• Practice Presentation on 3/15

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Dynamic Control of System (2/26, in person)

    • Looked at microcontrollers and feedback options

  • Ideal Finished Product: Working Hardware Prototype with Digital Software Control and User Interface (2/26, in person)

  • Began researching individual components

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Individual Component Analysis Overview (3/1, in person)

    • Distance Verification/Control

      • Nathan Cohen

    • Controller/Interface

      • Clint Luna

    • Motor and Ball Screw

      • Javad Safavi

    • Grips and Frame

      • Andrew Keohane

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • N/A

Risks and Areas of Concern

• • Interference with spectrometer

  • Frame bending/deforming under stress

    • Inaccuracies in distance measurement

  • Holding torque of motor to keep constant strain

  • Commercial grips potentially too large for spectrometer chamber

Resources or Information Required but not Available

• • Still need final size constraints

  • Confused about resolution requirement

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • We have not spent any of our budget yet.

Progress on Report and Webpage

• • N/A