MSU ECE 480 - Final Final Presentation - I said FINAL! - D1133117

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MSU ECE 480 - Final Final Presentation - I said FINAL!

School name Michigan State University

Course Ece 480- Senior Design

Pages 26

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Accessible Manufacturing Equipment Phase 2ContentsBackgroundSlide 4Slide 5Design SpecificationsSlide 7Final DesignSlide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Results and EvaluationsSlide 18Slide 19ConclusionSlide 21CostFuture ImprovementsSlide 24DemonstrationQuestionsAccessible Manufacturing EquipmentPhase 2Team 2Nicholas NeumannRalph PrewettJonathan BroukerFelix AdisaputraLi TianDecember 10th, 2010ECE 480 Senior Capstone DesignContentsBackgroundDesign SpecificationsFinal DesignResults and EvaluationsConclusionFuture ImprovementsDemonstrationBackgroundBasic Purpose of the ProjectFormer 2008 MachineBackgroundFormer 2008 Machine (Continued)PIC Programming•C Code•Timing LoopStepper Motors•Parallel Operation (Belt)Cam MotorsRotary CutterStationary and Movable ClampsBackgroundMajor ProblemsProgramming Interface•No C programmers on staff at location•Difficult MaintenanceStepper Motors•Inaccuracy•Slow OperationMotor Drivers•Overheat IssueDesign SpecificationsCritical Customer RequirementsSimple Programming Language•Easy MaintenanceHigh Level of Accuracy•Different Types of MotorVariable Speed Control•Higher Maximum Speed of OperationDesign SpecificationsSecondary ObjectivesVisual and Audio FeedbackReliability and Robustness•Reduce Occurrence of JammingSafety•Better Design of Safety GuardsReduce Noise During OperationCompact MachineAestheticsFinal DesignMechanical SystemsPneumatic Guillotine CutterValves AssemblyFinal DesignMechanical Systems (Continued)Two Capstans Design•Increases the Speed of OperationFinal DesignMechanical Systems (Continued)Adjustable FrameFinal DesignMechanical Systems (Continued)Tracking GuardFinal DesignHardwareLEGO NXT Brick as Microcontroller•LCD Screen for Speed Display•Limited I/O PortsLEGO Servo Motors•High Accuracy•CompatibilityI2C Serial Communication Bus•I/O Expander PCF8574Final DesignHardware (Continued)Input (Buttons)8-Segment LED Display•Length OutputFinal DesignHardware (Continued)Cutter Relay Control•Power TransistorLEGO NXT Brick Power Supply•Step-Down Converter Circuit–LM7809 Voltage RegulatorFinal DesignSoftwareLEGO Mindstorms NXT-GTimeFinal DesignAccepts User Input. Executes CommandsStarts or Stops Cutting ProcessContains Cutting ProcessDrives 8 Segment DisplayDisplays Length and Speed on NXT DisplayResults and EvaluationsImproved Accuracy2008: 13.24% defects2010: 1.46% defects Reduced Percentage Error2008: -12.99%2010: 2.7%Results and EvaluationsEnhanced Speed of OperationFor 100 Cycle Run:•2008: 7 min 49.7sec•2010: 2 min 27sec3.19 Times FasterResults and EvaluationsCapstan Feed DesignRemoved Drift FactorSmaller Size of the Machine4.7 Times Smaller in AreaLEGO Servo MotorsEliminated Overheating IssueSources of ErrorSusceptible to Ribbon Feed Method•Ribbon at Similar Elevation Improves Accuracy SignificantlyConclusionAccomplishmentsMaintain Simplicity of the Programming•LEGO Mindstorms NXT-GBetter Accuracy and Consistency•LEGO Servo MotorsVariable Speed Controller Implementation•Higher Maximum Speed of OperationConclusionAccomplishments (Continued)LED Display and SpeakerReliable and Robust•Tracking Guards Prevent JammingBetter Safety•Safety GuardsLess NoiseSmaller SizeAestheticsCostPart Number CostGuillotine Knife 1 $358.16IC LED Driver 1 $2.80LED Display 1 $1.674 digit LED Driver with I2C Bus interface 1 $3.20LED driver w/I2C 1 $1.540.33uF Capacitor 1 $0.83A Voltage Regulator 1 $0.70I2C interface 8 bit I/O Expander 2 $3.32IC I/O Expander 5 $9.30Tubing 1 $18.75Valve 1 $19.75Filter 1 $11.25Regulator 1 $17.00Pneumatic Lubricator 1 $12.25Male Straight1/4NPT*1/4 inch 1 $4.50Male Straight1/8NPT*1/4 inch 2 $5.00Male Elbow1/8NPT*1/4 inch 2 $12.00Shipping  $32.64*Lego Mindstorms NXT 2.0 1 $299.99Total Cost: $814.65*Sponsored by SponsorFuture ImprovementsWarning Message•Detects JamNumber Pad•Length•SpeedSpeed•Faster•More RangeFuture ImprovementsAudio (ISD 1400)Louder Adjustable Volume ControlA4 A5 A6 A70 0 0 10 0 1 00 0 1 10 1 0 01 1 0

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