Week 6

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

Finished manufacturing Design 1. Some testing was done, we need a different size linkage, the bearings need to be fitted better. Need to figure out a way to get servo to work the way we need it to work.

Accomplishments from Previous Week

CAD Finalized
Bill of Materials completed.
Final Report draft finished
All purchases were made and all components have been received.
Finished manufacturing design 1, started testing, found changes necessary for it to function better. Specifically the linkage needs to be adjusted, and needs a different servo.
Started manufacturing scotch yoke design

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

Purchase additional components for later design: Paul
Finish manufacturing of finalized scotch yoke design: Paul, Allyson, Wei, Jack
Assemble manufactured Parts, scotch yoke : Paul, Allyson, Wei, Jack
Manufacture/test different linkage for design 1: Paul, Allyson, Wei, Jack
Write arduino code to test servo/motor: Wei
Find way to either adjust the current servo or purchase new one: Wei,Jack
Find way to mount the encoder onto design 1: Allyson
Finalize design 1 and start testing: Paul, Allyson, Wei, Jack

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

Sponsor wants a functional 1D stable kapitza’s pendulum by the next meeting 5/12 .
Daniel showed the theoretical model of how the pendulum will behave at different angles

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

In-Person, 4/24:

Look into vibration dampers -> We will test with just clamps, if dampers are needed, then we will purchase them.
Look into making a slot out of delrin with teflon incorporated for both strength and low friction coefficient. The material has been researched, but the design has not fully been incorporated into CAD.
Decide on a lubricant for various slots.
Use shim stock to line the aluminum track.

In-Person, 5/1 was a presentation.

Make sure to use nylon locking nuts and blue loctite on design to reduce vibration.

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

No Presentations feedback received yet

Risks and Areas of Concern

The main risk and concern that prevent you from accomplishing your goal. Try not to put minor concerns in here.

High friction in the slot-slider system could cause issues, including jamming.
Temporary mounting system (clamps) may not be stable enough, causing the machine to walk.
The servo motor holds the weight of the entire mechanism, which may cause damage to the servo or instability.
Vibration of the mechanism could cause fatigue and noise.
The servo needs to be able to turn to any angle of 360 degrees but the servo we bought is a continuous servo that is not made for specific angle turning. The servos that can turn to any angle are only 180 and 270 degrees
Design 1 does not create perfect sinusoidal vibration. It is close, but not exact, and may cause issues for implementing control theory in the future.

Velocity (mm/s) vs time (s)

Resources or Information Required but not Available

List them here and the instructor will try to help you.

Schedule

Describe upcoming milestone, Update Gantt chart, Budget (list amount spent and amount remaining)