Transcript PDR9 - University of Notre Dame

Bangarang Musical
Engineering
University of Notre Dame
Department of Aerospace and Mechanical Engineering
Group Members: Roberto Ayala, Ryan Bradley, Pat Fox,
Matt Medlock, Mike Tieu
11.7.2006
Status of Design Concept
Design currently visualized:
Status of Design Concept
Status of Design Concept

Project Scheduling
- On schedule according to group and class deadlines

Showstoppers
-
? System Response Time ?
Solenoid Output Force at Lower Voltages
Last Week’s Action Items

Item:

Machine all components for the design
Action:
-
Group coordinated efforts and traveled to machine shop on
11/2/06

Outcome:
-
All parts machined for assembly
- Only part remaining to be CNC machined is frame top
Last Week’s Action Items
Last Week’s Action Items

Item:
- Build the frame used to support the drums and actuator

Action:
- 80/20 Aluminum selected as material for base frame
- Wood chosen as the material for the top cover
- Group members met on 11/5 and 11/6 to complete frame

Outcome:
- Frame completed – 3’ x 2’ x 1¼’
- Only CNC left to perform on wood
Last Week’s Action Items

Item:
- Build and test the voltage regulator circuit

Action:
- Gather electronic components and assemble by 11/7/06

Outcome:
- Initial design for regulator circuit failed due to complications with
transistors
- Different, more simple circuit proposed
- Simple circuit created and tested
- able to output four different voltages – success
Last Week’s Action Items
This Week’s Action Items

Item:
- Assemble the prototype

Action:
- Wooden cover machined by end of class 11/07
- Other parts can be assembled and interfaced with
microcontroller since circuitry is complete
This Week’s Action Items

Item:
- Complete the computer program that interfaces the microcontroller,
circuitry, and prototype assembly

Action:
- Utilize programming flow-chart already created as guide for
function
- Assistance will be sought from Mr. Brownell in ISALL
- Intended completion date: 11/12
This Week’s Action Items

Item:
- Begin prototype testing and select desired voltage drop across
solenoid for four different volumes

Action:
- Two variable resistors per solenoid ( 0 – 3 Ω )
Able to create four different voltage drops through basic parallel and series
wiring
 Resistance value selection paramount in design
 Current design values: R1 = 1 Ω
R2 = 2 Ω
 Four predicted voltage drops: 12.00 V, 9.82 V, 9.00 V, 6.80 V

Questions????