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FINAL DESIGN PRESENTATION UAV PROPULSION UAV Propulsion Control System For Commercial Applications
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MEET THE TEAM Drew Kirkwood ( Team Lead) Jonathan Sandlin Nandita GuptaDarius Brooks
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FACULTY ADVISOR DR. G. MARSHALL MOLEN, P.E. Education: ● Ph.D., Electrical Engineering, Texas Tech University, 1974 ● M.S., Electrical Engineering, Texas Tech University, 1969 ● B.S., Electrical Engineering, Texas Tech University, 1968 Research: ● Pulsed Power ● High Voltage ● High Energy Lasers
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OVERVIEW ● Problem ● Solution ● Practical Constraints ● Testing of Technical Constraints ● Timeline ● Progress ● Conclusion
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PROBLEM ● Interest in UAVs is on the rise. ● Companies are looking to incorporate UAVs in their current solutions. ● Researching possible solutions is a time consuming process.
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SOLUTION ● Our product will provide a basis for UAVs that will allow for the addition of multiple subsystems. ● This can help companies jumpstart the design process.
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SYSTEM OVERVIEW MOTOR DRIVE MOTORMICROCONTROLLER CAN BUS HOST PC
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PRACTICAL CONSTRAINTS Safety Health
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SAFETY ● Selection of load. ● Motor should be able to handle the load. ● Risk of injury to self or fellow workers with certain loads. https://www.flickr.com/photos/diabloazul/5608946195
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HEALTH ● High current can be dangerous or fatal. ● This system can draw up to 3A. ● Care must be taken to avoid electrical shock. https://ownersrepny.files.wordpress.com/2011/07/electric_shock.jpg
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TESTING OF TECHNICAL CONSTRAINTS COMMUNICATIONCAN BUS CONNECTS SUBSYSTEMS SAMPLE RATEMUST TAKE DATA SAMPLES AT A MINIMUM RATE OF 100 SAMPLES/S OPERATING VOLTAGEOPERATES WITHIN 18V - 26V SPEED CONTROLCONSTANT ROTATIONAL SPEEDS FAULT DETECTIONIDENTIFY AND RESPOND TO SYSTEM ERRORS
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COMMUNICATION : CAN BUS CAN analyzer (Kvaser) used to listen to the CAN bus BOOT UP MSG NMT MSG ENABLE DRIVE VELOCITY MODE SET: 100 RPM SET 200 RPM SET 300 RPM SET 100 RPM SET 0 RPM DISABLE
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SAMPLE RATE 0 1 2 3 4 5 6 7 8 9 10
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OPERATING VOLTAGE ● Operates between 18V to 26V. ● Voltage divider with predefined voltage levels. ● System voltage measured using ADC. ● Throws flag when voltage is above 26V and below 18V.
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SPEED CONTROL ● Set RPM. ● Check RPM. ● Adjust Values. Drive reset Drive Response NMT ENABLE DRIVE SYNC MSG Response PDO MODE: Velocity SET VELOCITY: 400RPM SYNC MSG Response PDO HOST PC: Set 800 RPM SYNC MSG Response PDO SET VELOCITY: 800 RPM SYNC MSG Response PDO
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FAULT DETECTION ● Voltage ○ Overvoltage and Under- voltage error handling. ● Current ○ Insufficient Current Error if task requires more current than current available. ● Unable to Connect ○ Cannot communicate with motor drive.
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INSUFFICIENT CURRENT Set Current and VoltageMonitored Current and Voltage Bridge being disabled after an inability to draw current for the specific task.
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RESET DRIVE ERROR:No response from drive Host requests reset (03) Clear error RESET DRIVE ERROR: no response MANUAL DRIVE POWER UP Host requests reset (03) Clear error RESET DRIVE BOOT UP MSG UNABLE TO CONNECT
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August Research September Research Part Selection Microcontroller Setup TIMELINE November Sub system Testing Prototype Finalization Present Material October CAN Setup Software Development Motor Drive Setup
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EFFECTIVE TEAMING NANDITADREWJONATHANDARIUS MOTOR & MOTOR DRIVE SUB SYSTEM CAN COMMUNICATION BUS MICROCONTROLLER & MOTOR DRIVE MOTOR & ALTERNATOR SUB-SYSTEM
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PROGRESS
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FUTURE WORK Create a new frame (preferably metal). New coupler - LoveJoy. Current Mode.
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QUESTIONS?
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