Design and Fabrication of Mobile Platform for Pavement Surface Texture Profiler

Photo of Michael Pratte, Jeffrey Stasyszen, Lyndon Zvonek Students: Michael Pratte, Jeffrey Stasyszen, Lyndon Zvonek

Sponsor: The Transtec Group

Date: Fall 2011

Requirements:
The RoboTex III mobility platform provides a carriage for a line laser that takes measurements of pavement frequencies. The RoboTex III is required to provide a smooth ride at a steady speed of 1 mph for the laser and have tight and easy-to-control steering. Additionally it must satisfy requirements to be checked as baggage on airlines, including having a weight less than 80 lbs., a width of less than 22", and a length of less than 32".

Problem:
The Transtec Group tasked the senior design team with designing and building a new mobile platform for their surface profile measurement equipment.

Solution:
To keep the weight of the prototype low, the RoboTex III employs a light weight modular frame material from 80/20 and is powered by three 12 V NiMH battery packs. The new design uses front wheel steering powered by a linear servo and rear wheel drive with LabVIEW powered cruise control. While the total width of the prototype is 24", the wheels can be removed to reduce it to 22" for transport.

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