Integrated System Build & Test
Table of Contents
Phase 3 Overview
Throughout the course of this phase the team was able to build and test all individual subsystems and components required for the whole system build. After testing, the full system was assembled and there were key attributes that require attention in order to proceed with the intended goal of measuring cable tensions at particular points throughout the build volume. In addition to the system build, the team was also able to reach the deliverables for this phase as shown below.
As shown below the entire system build can be observed.
MOTOR X Axis
MOTOR Y Axis
MOTOR Z Axis
Electrical System Pictures
Electrical Enclosure for Arduino and Motor Shield
Additional cooling fans to dissipate thermal heat
Power Supply Unit providing 24V, maximum 8.8A
Complete System PicturesFrame Assembly
Summarize test results and assess effectiveness of test plans to unambiguously demonstrate satisfaction of the engineering requirements
Link to complete system test here
Link to tech paper here
Link to CAD folder here
Link to risk mitgation here
For more documentation related to Phase 3 risk tracking, please click here
ElectricalThroughout the testing of subsystems there was a concern on the amount of current draw the motors would have and the impact that it would have on the motorsheild and the Arduino. Observation show that there was only a 0.3A current draw across all three motors, despite these motors having the ability to draw up to a maximum of 4.2A.
There was an issue that was preventing us from allowing these motors to draw more current for motor torque.
Top down approach was taken.
1. Observe all wiring.
2. Reference wiring schematic
3. Review of Arduino Motor Shield
Minor issues and Resolution:
- Motor shield was experiencing thermal shutdown (Control Drivers were getting hot). Solution was obtaining DC motor fans to blow cool air on the control drivers on the motor shield.
- Rollers on pulley are too tight, causing a pinch point on the cable and creating slack. Solution was to loosen the bolts on the rollers.
- Y axis spool uses two cables. When system in moving in Y direction, one cable was observed to be longer than the other. Solution was to re-crimp the cables to ensure equal length.
Link to detailed schedule here
- Putting together complete system is a long process.
- Start at subsystem level and test at subsystem level.
- Identify outstanding and find root cause of issue with problem resolution matrix/methods.
- Problems will happen, schedule for more problems than anticipated.
Phase 4 Overview
- Prototype handoff to customer with system documentation and documenting customer satisfaction.
- Testing complete and fully documented.
- Technical paper completed and submitted.
- Project poster completed and submitted.
- Objective evaluation of successes and failures.
- Team self-assessment.
- Project review presentation for gate review.
- All project documentation completed and uploaded on EDGE page.
- Ready for demonstration at IMAGINE RIT.
For a more detailed breakdown of the team plans, please click here