Autonomous Autonomous TrunkTrunk

Jui-Shan Grace Hsu· Andrew Ko · Ken Murray Jui-Shan Grace Hsu· Andrew Ko · Ken Murray Nathan Ng· Prashant Tatineni· David YamagataNathan Ng· Prashant Tatineni· David Yamagata

April 27, 2006April 27, 2006ME 102 Group 10 – The LoggersME 102 Group 10 – The Loggers

Autonomous Trunk

IntroductionIntroduction

The ProblemThe Problem ObjectivesObjectives Project DesignProject Design

ComponentsComponents Mechatronic IntegrationMechatronic Integration AdvantagesAdvantages

Autonomous Trunk

The ProblemThe Problem

Items placed in trunks can slide Items placed in trunks can slide around and are easily damagedaround and are easily damaged

Basic nets help but are limitedBasic nets help but are limited Usually span the middle of the trunk, Usually span the middle of the trunk,

getting in the waygetting in the way Often not the Often not the

appropriate sizeappropriate size

Autonomous Trunk

Design ObjectivesDesign Objectives

Accommodate objects of different Accommodate objects of different sizes and fragilitysizes and fragility

Apply enough force to secure the Apply enough force to secure the object without damaging itobject without damaging it

An “out of the way” system that An “out of the way” system that allows for easy loading and unloadingallows for easy loading and unloading

Autonomous Trunk

Project DesignProject Design

Net that covers and tightens around Net that covers and tightens around the objectthe object

Two settings for different sizesTwo settings for different sizes High tensionHigh tension

Secure heavy itemsSecure heavy items Prevent from moving and damaging smaller Prevent from moving and damaging smaller

itemsitems Low tensionLow tension

Hold light objects in placeHold light objects in place Fragile items might otherwise move around Fragile items might otherwise move around

and be damaged by sides of trunkand be damaged by sides of trunk

Autonomous Trunk

ComponentsComponents

Net anchored at Net anchored at three set three set locations in the locations in the rear of the trunkrear of the trunk

Connected to a Connected to a rope that allows rope that allows for adjustable for adjustable positioning in the positioning in the front by motorfront by motor

Autonomous Trunk

Mechatronic IntegrationMechatronic Integration

Encoders are used Encoders are used to determine when to determine when proper tension has proper tension has been reachedbeen reached

Based on speed of Based on speed of spool rotation and spool rotation and voltagevoltage

Autonomous Trunk

AdvantagesAdvantages

Keeps objects secured in a confined Keeps objects secured in a confined areaarea

Flexible enough to handle multiple Flexible enough to handle multiple objectsobjects

Relatively inexpensive and Relatively inexpensive and lightweightlightweight

Allows easy loading and unloadingAllows easy loading and unloading