1. Autonomous Trunk Jui-Shan Grace Hsu· Andrew Ko · Ken Murray
Nathan Ng· Prashant Tatineni· David Yamagata
April 27, 2006
ME 102 Group 10 – The Loggers

2. Introduction The Problem Objectives Project Design Components
Mechatronic Integration
Advantages

3. The Problem
Items placed in trunks can slide around and are easily damaged
Basic nets help but are limited
Usually span the middle of the trunk, getting in the way
Often not the appropriate size

4. Design Objectives Accommodate objects of different sizes and fragility
Apply enough force to secure the object without damaging it
An “out of the way” system that allows for easy loading and unloading

5. Project Design Net that covers and tightens around the object
Two settings for different sizes
High tension
Secure heavy items
Prevent from moving and damaging smaller items
Low tension
Hold light objects in place
Fragile items might otherwise move around and be damaged by sides of trunk

6. Components
Net anchored at three set locations in the rear of the trunk
Connected to a rope that allows for adjustable positioning in the front by motor

7. Mechatronic Integration
Encoders are used to determine when proper tension has been reached
Based on speed of spool rotation and voltage

8. Advantages Keeps objects secured in a confined area
Flexible enough to handle multiple objects
Relatively inexpensive and lightweight
Allows easy loading and unloading