P17503: Electrophotographic Test Bed
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Detailed Design

Table of Contents

Reference the Detailed Design Documents directory to view all files.

Team Vision for Detailed Design Phase

Progress Report

Progress Report

Prototyping, Engineering Analysis, Simulation

Custom Motor Controller

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Arduino Controller Functional Diagram: The PC (LabVIEW) talks directly to both the Arduino and the DAQ. The Arduino controls the motor driver which controls the motor. The motor triggers both a rotary encoder (read by the DAQ) and a magnetic home sensor (read by the Arduino), which allows for detection of both absolute and relative position.

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Timer Diagram: Timer0 is configured to oscillate pin 12 at a set frequency. Pin 12 is then fed directly to the motor driver to control the photoconductor motor. Pin 12 is also fed into pin 11, which acts as the clock source for Timer1. Timer1 is used as a counter, and will increment with every pulse. Once pin 12 has pulsed the desired number of times, Timer1 will trigger code to stop the motor. Pin 4 is used to read the magnetic home sensor and automatically stop the motor whenever it is triggered, even is a movement command is underway.

Drawings

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High Visibility Cover: Black portion blocks light for the light sensitive processes while the clear portion allows the transfer stage to be observed. A sheet of dark acrylic serves as the interface between the two "zones". The interface will have a small hinged door that allows the photoconductor to move through all of the processes.

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High Isolation Cover: The whole cover is made of dark, low gloss acrylic. This eliminates the possibility of light inadvertently entering the light-sensitive processes through the interface that is present in the High Visibility Cover.

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View of the structure without cover present.

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Back view of the structure without cover present. The oval holes in the top plate for all of the wiring can be seen.

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Structure with protective cover. Casters and levelers are also present on this view. The High Visibility cover may be swapped out for the High Isolation cover pending the results of the Detailed Design Review.

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Assembled structure with open doors. All of the voltage generators and computer are stored underneath the test bed.

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View of the assembled structure with the High Isolation cover present.

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View of the assembled structure with the High Isolation cover present with doors open.

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Exploded view of the assembled structure. The cover was not taken apart due to sub-assembly constraints in Solidworks.

Bill of Material (BOM)

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Bill of Materials for the Electrical Components

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Bill of Materials for the Mechanical Support Structure

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Bill of Materials for the High Visibility Cover option

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Bill of Materials for the High Isolation Cover option

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Current Budget Projection - To be refined after Design Review

Test Plans

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Click to Download Test Plan Tracker

Risk Assessment

Risk Analysis(Click to Download)

Design Review Materials

Click to View Presentation

Click to see notes from Design Review

Plans for next phase

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