Show simple item record

dc.contributor.authorRoa, Christian Raphaelen_US
dc.date.accessioned2016-01-17T07:00:32Z
dc.date.available2016-01-17T07:00:32Z
dc.date.issued2014-07-25en_US
dc.identifier.othervt_gsexam:3415en_US
dc.identifier.urihttp://hdl.handle.net/10919/64467
dc.description.abstractEnergy efficiency is a driving factor in modern electronic design particularly in power conversion where conversion losses directly set the upper limit of system efficiency. A wide variety of commercially available DC-DC conversion elements have inefficiencies in the 90-97% range. The efficiency range of most common commercial-off-the-shelf (COTS) power supplies is 75-85%, highlighting the fact that COTS power supplies have not kept pace with efficiency improvements of modern conversion elements. Unmanned ground vehicles (UGVs) is an application where efficiency can be crucial in extending tight power budgets. In autonomous ground vehicles, geographic diversity with regard to sensor location is inherent because sensor orientation and placement are crucial to performance. Sensor power, therefore, is also distributed by nature of the devices being supplied. This thesis presents the design and evaluation of a smart power module used to implement a distributed power network in an autonomous ground vehicle. The module conversion element demonstrated an average efficiency of 96.7% for loads from 1-4A. Current monitoring and an adjustable output current limit were provided through a second circuit board within the same module enclosure. The module processing element sends periodic updates and receives commands over a CAN bus. The smart power modules successfully supply critical sensing and communication components in an operational autonomous ground vehicle.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectunmanned ground vehicleen_US
dc.subjectsensor poweren_US
dc.subjecthigh efficiencyen_US
dc.subjectcurrent limitingen_US
dc.subjectcurrent sensingen_US
dc.subjectinternal compensationen_US
dc.titleSmart Power Module for Distributed Sensor Power Network of an Unmanned Ground Vehicleen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairWicks, Alfred L.en_US
dc.contributor.committeememberSouthward, Steve C.en_US
dc.contributor.committeememberMeehan, Kathleenen_US


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record