NEIL MUNROE, GIFF MEZEY, TIM JAFFE, IAN BUBB Improved Velocity Measurement Device
Table of Contents 1. Description of the Design Task 2. Design Process 3. Design Assessment 4. Prototype/Model 5. Engineering Analysis 6. Summary and Conclusions
Problem Statement The nominal speed of the rollers may not be accurate enough. For maximum control the actual speed of the paper must be known. Design Task
Mission Statement Create a device that can measure the actual velocity of the paper in the printer Minimize cost Maximize sustainability
Design Task Customer Needs Assessment Interview of iGen4 consultant Highest possible quality of picture Consistent quality High speed printing
Design Task Design Specifications Measurement of actual speed of the paper Detection of an 8.5” x 11” sheet of paper Moving at a velocity of 250 to 750 mm/s Measure within a tolerance of.25% System cannot impact speed of the sheet Minimize cost
Design Process Concept Generation Velocity measurement Devices Lever Wheel Laser
Design Process Lever Velocity Measurement Device
Design Process Wheel Velocity Measurement Device
Design Process Laser Velocity Measurement Device Δx V=Δx/Δt
Design Process Screening Matrix LasersWheelsLevers Cost-++ Ease of Production 0++ Accuracy+-- Sustainability+00 Total:111
Design Process WeightLasersWheelLevers Cost14%145 Ease of Production 7%354 Accuracy70%422 Sustainabil ity 9%433 Total:100% Weighted Matrix
Design Process Best Design: Laser Velocity Measurement Device Accurate Does not affect paper speed Cost effective Meets all requirements Falls within constraints
Prototype CAD rendering
Prototype CAD Animation
Engineering Analysis Cost: Varies with number of sensors Cost estimates: $ plus installation Cost varies with size and accuracy All accuracy within.2% Ease of use and installation Reliability Sustainability
Summary and Conclusion Through detailed research, we concluded the laser velocity system was the most cost effective method that fell within the constraints.
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