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ContentsContents
Length Motion MotorsLength Motion MotorsDrive Assembly Drive Assembly Length Rail SystemLength Rail SystemPlatform DesignPlatform DesignWidth & Depth MotionWidth & Depth MotionData AcquisitionData AcquisitionData TransferData Transfer
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Length Motion MotorsLength Motion Motors
Motor OptionsMotor Options1. Series Motor with Brushes1. Series Motor with Brushes
2. Brushless DC Servo Motor2. Brushless DC Servo Motor
3. Brushless AC Servo Motor3. Brushless AC Servo Motor
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Series Motor with BrushesSeries Motor with Brushes
Advantages +Advantages +–Lower costLower cost–Move platform quicklyMove platform quickly
Disadvantages -Disadvantages -–Less dependable (Brush failure)Less dependable (Brush failure)–Difficult to controlDifficult to control–Linear encoder needed to determine Linear encoder needed to determine position position
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Brushless DC MotorBrushless DC Motor
Advantages +Advantages +–High starting torqueHigh starting torque–Closed loop controlClosed loop control–Smooth operationSmooth operation–High resolutionHigh resolution
Disadvantages -Disadvantages -–Made for large scale applicationsMade for large scale applications–Expensive power supplyExpensive power supply–More costly than conventional More costly than conventional motorsmotors
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Brushless AC Servo MotorBrushless AC Servo Motor
AdvantagesAdvantages + +-High starting torque-High starting torque-High resolution-High resolution-Smooth operation-Smooth operation-Highly recommended for similar -Highly recommended for similar applicationsapplications-Easily controlled-Easily controlled
DisadvantagesDisadvantages - --High Cost-High Cost
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Drive AssemblyDrive Assembly
Rack and PinionRack and Pinion
Advantages +Advantages +–Low ProfileLow Profile–SafetySafety–Low CostLow Cost–DependableDependable
Disadvantages -Disadvantages -–Binding & torque Binding & torque considerationsconsiderations
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Length Rail SystemLength Rail System
Rail OptionsRail Options
1. Angle Aluminum1. Angle Aluminum
2. DualVee Linear Systems2. DualVee Linear Systems
3. Shaft and Rollers3. Shaft and Rollers
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Aluminum AngleAluminum Angle
Advantages +Advantages +–Low CostLow Cost–Easy to InstallEasy to Install
Disadvantages -Disadvantages -–No Vertical ConstraintNo Vertical Constraint–Dependent Upon Dependent Upon Flume Rail Flume Rail StraightnessStraightness
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DualVeeDualVee
Advantages +Advantages +–Vertical & Horizontal ConstraintVertical & Horizontal Constraint–Independent of Flume RailIndependent of Flume Rail–Package DealPackage Deal
Disadvantages -Disadvantages -–Complicated InstallationComplicated Installation–High CostHigh Cost
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Shaft and RollersShaft and Rollers
Advantages +Advantages +–Vertical and Horizontal Vertical and Horizontal ConstraintConstraint–Same Performance, Lower Same Performance, Lower CostCost–Independent of Flume Rail Independent of Flume Rail
Disadvantages -Disadvantages -–Some In-House ManufacturingSome In-House Manufacturing
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Platform DesignPlatform Design
Constraints:Constraints:–Mounting AreaMounting Area–Proximity of WaterProximity of Water–Accident SafeguardsAccident Safeguards–Easy Mounting & RemovalEasy Mounting & Removal–Cantilevering Concerns Cantilevering Concerns Square TubeSquare Tube
Concepts:Concepts:–Planar DesignPlanar Design–Hook DesignHook Design–Gantry StyleGantry Style
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Platform DesignPlatform Design
Hook Design
Planar Design
Support Rail Style
Support Rail Style (T-channel)
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Platform DesignPlatform Design
Gantry Style
Support Rail Style (C-channel)
Features:Features:Platform Elevated from WaterPlatform Elevated from WaterMotor & Shaft Easily AccessibleMotor & Shaft Easily AccessibleRestrained Vertically & Restrained Vertically & HorizontallyHorizontallyEasily Mounted & Removed from Easily Mounted & Removed from FlumeFlumeSides Guards Prevent Accidental Sides Guards Prevent Accidental Injury (Plexi-glass Window) Injury (Plexi-glass Window)
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Width & Depth MotionWidth & Depth Motion
Velmex SlidesVelmex SlidesAdvantagesAdvantages
–High AccuracyHigh Accuracy–PreassembledPreassembled–Motor Control PackageMotor Control Package–Easy Installation (plug & play)Easy Installation (plug & play)–Optional Way-CoversOptional Way-Covers
DisadvantagesDisadvantages–Slow TravelSlow Travel
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Velmex SlidesVelmex Slides
Mounted DownstreamMounted DownstreamEquipment:Equipment:
–80” Powered Slide (blue)80” Powered Slide (blue)–80” Free Slide (orange)80” Free Slide (orange)–50” Powered Slide 50” Powered Slide (green)(green)–50” Way-Cover (NS)50” Way-Cover (NS)–9090oo Gusset (red) Gusset (red)
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Data AcquisitionData Acquisition
Three Potential Methods:Three Potential Methods:–Computer mounted on Computer mounted on platform with separate Data platform with separate Data Acquisition unit Acquisition unit –Data Acquisition computerData Acquisition computer–Data Acquisition cards in a Data Acquisition cards in a computercomputer
Computer: A PC running windows XP Computer: A PC running windows XP
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PC and DAQPC and DAQ
Water Flume Platform
Datainterpreter
Laptop
Lab
Workstation
Sensors
Advantages +Advantages +– Easy to upgradeEasy to upgrade– Standard operating systemStandard operating system– User friendlyUser friendly
Disadvantages -Disadvantages -– Requires the most spaceRequires the most space– Unnecessary featuresUnnecessary features
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PC Data Acq. UnitPC Data Acq. Unit
Advantages +Advantages +– Standardized add-onsStandardized add-ons– Requires little space Requires little space
on platformon platform
Disadvantages -Disadvantages -– ExpensiveExpensive– Unnecessary featuresUnnecessary features
Water Flume Platform
Datainterpreter
Lab
Workstation
Sensors
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PC and PCI DAQ CardsPC and PCI DAQ Cards
Advantages +Advantages +– Least expensive solutionLeast expensive solution– Sensory equipment can Sensory equipment can
interface with PCinterface with PC
Disadvantages -Disadvantages -– Not compatible with high Not compatible with high
speed data acquisition speed data acquisition componentscomponents
– Unnecessary featuresUnnecessary features
Water Flume Platform
Laptop& Data
Acquisition
Lab
Workstation
Sensors
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Data Transfer: WirelessData Transfer: Wireless
Advantages +Advantages +– Transmits data the necessary Transmits data the necessary
distancedistance– Simple to implementSimple to implement
Disadvantages-Disadvantages-– Slow data transfer Slow data transfer – Security issuesSecurity issues
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Flume MockupFlume Mockup
Modular SystemModular System–Flume: 5 piecesFlume: 5 pieces–Wedge: 1 pieceWedge: 1 piece
FeaturesFeatures–Testing 0Testing 0oo Incline Incline–Testing 10Testing 10oo Incline Incline–Disassembly for Disassembly for Easy TransportEasy Transport