p11213: modular student attachment to the land vehicle for education jared wolff, andrew komendat,...
Post on 19-Dec-2015
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P11213: Modular Student Attachment to the Land Vehicle for Education
Jared Wolff, Andrew Komendat, Oyetunde Jolaoye, Dylan Rider
Contents Project Goals Customer Needs Engineering Specifications Concept Selection Design Considerations Student Project Prototype Testing Results and Status Future Plans and Suggestions
Project Goals Attachment to Land Vehicle for Education
(LVE) Introduce freshman engineers to design tools
and processes Removable and interchangeable Modular
Student Attachment (MSA) Utilize RIT facilities Hands on example Team project
Customer NeedsSome significant customer needs:• The MSA must teach first year RIT Mechanical
Engineering students design principles.• MSA must also utilize in house facilities for the
manufacturing of MSA components. • MSA must be of a low cost so that more would be
purchased,• MSA must be easy to store in the allocated storage
and it must also be safe to use.• MSA must be impressive such that other schools and
faculty would want to emulate it.
Engineering SpecificationsSome engineering specifications: MSA shall require each student to design, model,
and manufacture 1 to 3 parts MSA shall required assembly in CAD of 5 to 15 parts MSA shall include at least 5 components MSA shall have less than 10 customable parts MSA shall require between 0.5 and 2 hours to teach
per class MSA shall have not exceed 5 pounds, including
payload MSA shall require less than 5 repairs during its
lifetime
Design Considerations Feasibility and user friendliness Detailed motor and torque analysis Budget limitations LVE integration and attachment Control interfacing and communication Power consumption analysis
Torque Analysis Calculator in Matlab Finds geometric angles based on 90 degree
rotation Uses 9x9 matrix to solve for torque required Checking tool for professors to validate
student design Help visualize real world limitations
Torque Analysis
Standard square geometry
Full range of motion
No inflection point No added range in
the reach
Power Consumption 72.2 oz in at 4.8V 90.3 oz in at 6V Worse Case Transients ~0.700 mA Normal Under Load Current ~0.500 mA
5V provided by the Buck Circuitry Power = 2*0.500 * 5V = 5W Current = 1 A
Control Communication USART Interface
115200 BAUD 1 stop bit Normal Inverted Operation No parity
Data protocol
All data is sent via UART from the LVE controller.
Structural Analysis
Subject to drop requirements Limited payload weight Finite Element Analysis (FEA)
LVE Mounting
Quick attachment and removal
Easy to use Robust to repeated
use Press fit with cotter
pin
Component Selection
Standardized bolt and nut sizes
Off the self gripper, motors
Less customized parts when possible
Budget restrictions
Student Components and Analysis Geometric analysis Computer Aided Drafting (CAD) modeling of
designed parts CAD assemblies using parts library available Manufacturing Assembly and test
Testing Test plan includes 18 tests Passed all tests
Survey Feedback from ME Professors
P11211-P11213 Land Vehicle for Education (LVE)
Megan Ott and Andrew Komendat
Response # Question #1 Question #2 Question #3 Question #4 Question #5
1 5 4 - 4 2
2 4 5 4 4 5
3 4 5 3 3 4
4 3 5 4 - 3
5 4 4 5 5 3.5
6
TOTALS 80.00% 92.00% 80.00% 80.00% 70.00%
GRAND TOTAL 80.43%
Results and Conclusions Working prototype Lacks robustness in strength and durability Budget restrictions were overlooked Fun project Room for improvement Contains potential multidisciplinary projects
Future Suggestions and Improvements Better material selection color for aesthetics Manufacture gripper in house (cost reduction) More robust and capable drive servo Decrease size and capability of MSA Improve multidisciplinary projects