156B Week 5

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

• • Prototype of Rotary system design completed 

  • Prototype of Rotary system assembly completed

  • Decision on feeder bowl was made and parts were ordered 

  • Tests of electrical units was made to find the problem of overheating and oscillation

Accomplishments from Previous Week

• • Feeder bowl was ordered

  • Assembly of Rotary system has been done

  • Overheating of the motor driver has been found

  • Printer head sensor has been discussed with sponsor

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

• • Solve the problem of overheating motor driver and oscillation of stepper motor

  • Finish CAD of Feeder Bowl design and wait for drive unit to perform further tests

  • Make decision on Printer head sensor

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

• • Discussion between two types of sensor, Retro flex and Fiber optic with sponsor

  • Preference of Fiber optic which is recommended by the Markem Imaje company (via email) 

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

• • Suggested to use alternative motor driver to solve the problem of overheating such as polulu to adjust current (in person)

  • Suggested to use any cooling method to reduce heat (in person)

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

• • The overheating problem of the driver might cause malfunction for long time use in the circuit

  • The Oscillation of the Stepper motor might cause the printing to become difficult

  • The feeder bowl might need further adjustment to be compatible with tubes

Resources or Information Required but not Available

• • N/A

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • $ 0 spent

Progress on Report and Webpage

• • Complete weekly report for week 5

  • First draft of final report complete

  • Developing Webpage