Accession Number : ADA577582


Title :   Characterization of Small DC Brushed and Brushless Motors


Descriptive Note : Final rept. Oct 2011-Sep 2012


Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD VEHICLE TECHNOLOGY DIRECTORATE


Personal Author(s) : Harrington, Aaron M ; Kroninger, Christopher


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA577582


Report Date : Mar 2013


Pagination or Media Count : 48


Abstract : Micro brushed and brushless motors of the size typically used on micro-ground vehicles and micro-air vehicles have been found to have very low efficiencies. This lack of efficiency not only stems from low manufacturing tolerances, but is also because motors at these scales are generally operated over a large range of loading conditions causing them to operate off design point. This technical report: (1) provides a basis for a simple motor analysis, comparing analysis with actual motor test data, (2) examines the efficiencies of many of the off-the-shelf brushed and brushless motors used in micro vehicle applications, and (3) provides a methodology for proper motor selection, emphasizing the importance in ensuring motor loading conditions are matched to the motor design in order to maximize power efficiency.


Descriptors :   *AIRCRAFT , *ENGINES , *GROUND VEHICLES , ACTUATORS , DIRECT CURRENT , EFFICIENCY , PERFORMANCE(ENGINEERING) , PROPULSION SYSTEMS


Subject Categories : Aircraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE