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WinBot II

WinBot II. AS-0.3200 Automaatio- ja systeemitekniikan projektityöt. WinBot II. Wind powered robot for winter conditions Attempt to improve WinBot I design Project split in to 4 main milestones : Initial planning and component ordering Defining robot dimensions

december
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WinBot II

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  1. WinBot II AS-0.3200 Automaatio- ja systeemitekniikan projektityöt

  2. WinBot II • Windpowered robot for winterconditions • Attempt to improveWinBot I design • Project split in to 4 mainmilestones: • Initial planning and componentordering • Defining robot dimensions • Creating initial structure • Testing and adjustingcreatedstructure

  3. Initial planning • Target was to work on the flaws of WinBot I: • Legostructure not verysturdy • Robot fell over with strongerwind • Desided to make structureout of carbon fiber with longerskis to try fix the problems in WinBot I • Consideredsome form of sailsizecontrol

  4. Componentordering • For controllingweordered RC servos and a radio controller for easy control of the robot without the need for a heavy controlunitonboard • Carbon fiber tubes and sheetswereordered for the chassis, however the deliveredsheetsweretoolowquality to use and wedecided to get glass fiber sheets of higherqualityinstead

  5. Defining the robot dimensions • WinBot II wasdesigned to be slightlywiderthanWinBot I for increasedstability • Longerskiswereselected to lower the chance for the robot falling over • The sailwasdecided to be made of some plastic or fabric with increasedsize to accomodate the slightlylarger robot structure

  6. Creating the initial structure • Initial chassis wasbuilt from glass fiber • Controlling servos weredirectlyconnected to theirtarget parts • Sail area controlwasbuilt with a hingeon the mast allowingverticaltilting • Sailwasbuiltout of a plastic sheetattached to twoverticalcarbon fiber beams that wereconnected to the mast via the hinge

  7. Testing and improvement • Early tests showed that oursailwastooweak, wehad to remake the sail with a sturdyframe • Sail turning and tilting servos weren’tgoodwhenconnecteddirectly, connectionsweremade with strings and reelsinstead • Later tests showed that oursailwaspossiblytoobig, high windswouldthrow the robot around in worstcase

  8. Testing and improvement • Verticaltilting of the sailwasscrapped, the designedtiltingmechanismwasn’tgoodenough for efficientuse • Weatherdidn’tpermit testing on snow, test on a parkinglot with wheelsshowed that the robot moved forward

  9. The Result • WinBotII motions

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  19. Whatweachieved / failed • Achieved: • Sturdierstructure for robot • Betterremotecontrols • Failed: • Sailsizecontrol

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