Testing the accuracy of machine guidance in road construction

Kiongoli, Said (2010) Testing the accuracy of machine guidance in road construction. [USQ Project]


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[Abstract]: 3D Machine Control and Guidance Systems first appeared on the market in the late 1990's. These systems put a small computer within the cab of earthwork machines that utilized Global Positioning System (GPS) satellites to relay position information to the computer. The computer evaluates the actual position relative to its location in the proposed model. The operator uses the information from the onboard computer to control the machine's equipment. In advanced cases, the onboard computer can be directly linked to the machine hydraulics, controlling their operation with minimal input from operator.

Automated machine guidance using RTS was the major new application of this advancement in technology. Robotic Total Stations (RTSs) were first introduced by Geodimeter in 1990. These instruments incorporated servomotors and advanced tracking sensors which allowed the instrument to track a target. RTS's are now utilized in the construction and extractive industries for the guidance of major earthworks machinery as well as in agriculture industry for the guidance of machinery such as tractors and harvesters.

In today's world, with the application of RTS, ATSs and now moving into real time AMG. The accuracies and latency of both operations are still not well understood, it has become critical to understand the exact accuracies that these instruments are capable of achieving whilst operating in the field. Thus upon the completion of this project my aim is to have a better understanding of both operational accuracies of several instruments, as well as their performances.

The working specification in most of road construction are general requires the tolerance of ±0.02m. In order to achieve this tolerance required for such work we need to determine if these technologies are capable of meeting such accuracies.

Upon the completion of this project, we will have a better understanding of how the accuracies of the machine guidance works and under what conditions the contractor, engineers or surveyors can understand the performance of the AMG works better.

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Item Type: USQ Project
Refereed: No
Item Status: Live Archive
Additional Information: Bachelor of Spatial Science (Surveying) project.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Surveying and Land Information
Supervisors: Chong, Albert
Date Deposited: 04 Mar 2011 03:50
Last Modified: 19 Jul 2018 00:25
Uncontrolled Keywords: road construction; earthworks machinery; global positioning system; GPS; machine guidance and control; robotic total station (RTS); 3D machine guidance systems; Advanced tracking sensors
Fields of Research : 09 Engineering > 0909 Geomatic Engineering > 090906 Surveying (incl. Hydrographic Surveying)
09 Engineering > 0909 Geomatic Engineering > 090903 Geospatial Information Systems
URI: http://eprints.usq.edu.au/id/eprint/18562

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