Synchro Drive Robot Platform. Some years back I was talking with a friend at work about LEGO robots and he mentioned this synchro drive robot platfrom concept.
http://www.visi.com/~dc/synchro/index.htm

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http://questthejourney.com/products/NCProducts/DCSynchro.htm

0-7803-8808-9/05/$20.00 ©2005 IEEE Time Synchronization for ZigBee Networks Dennis Cox, Emil Jovanov, Aleksandar Milenkovic Electrical and Computer Engineering Department ...
http://www.ece.uah.edu/%7Emilenka/docs/dc_ssst05_synch.pdf

Dc-synchro converters drive torque receivers. A line of dc-to-synchro converters accept up to 100 Vdc and convert it to 11.8- and 90-V/400-MHz or 90-V/60-MHz synchro or resolver ...
http://www2.electronicproducts.com/Dc-synchro_converters_dri ...

Select Mouser Part # Mfr. Part # Mfr. Description Availability ... Texas Instruments: Controllers - DC/DC Synch Buck Cntrlr Class-AB Audio Amp Data Sheet
http://www.mouser.com/Search/Refine.aspx?Ne=254016&N=132 ...