Title :
Angular accuracy improvement for industrial grade pedestal
Author :
Grinberg, Boris ; Levin, Hanoch ; Brandes, Amit ; Fischler, Amit
Author_Institution :
Elbit Syst., Control & Navig. Dept., Electro-Opt. ELOP, Ltd., Rehovot, Israel
Abstract :
This paper describes a way of upgrading a low-cost industrial grade pedestal, based on a direct drive motor and a geared resolver, to a high accuracy system. The upgraded pedestal could be utilized as a platform for a narrow field of view (FOV) optical surveillance unit. The pedestal angular position error is analyzed and experimentally evaluated. Then a method for compensating the major error sources is presented. It addresses the gear and resolver systematic errors. Proper choice of the gear is also discussed. Finally, actual results of the compensation algorithm integration into the servo loops, which yields an angular accuracy of less than 100 ¿Rad RMS, are presented.
Keywords :
gears; motor drives; surveillance; angular accuracy; angular accuracy improvement; compensation algorithm integration; direct drive motor; field of view optical surveillance unit; geared resolver; industrial grade pedestal; resolver systematic errors; Ambient intelligence; Electrical equipment industry; Gears; Mechanical sensors; Optical devices; Optical feedback; Optical sensors; Shafts; Software algorithms; Surveillance; Gear accuracy; Pointing accuracy; Resolver;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 2008. IEEEI 2008. IEEE 25th Convention of
Conference_Location :
Eilat
Print_ISBN :
978-1-4244-2481-8
Electronic_ISBN :
978-1-4244-2482-5
DOI :
10.1109/EEEI.2008.4736680
