Hey all, About http://psas.pdx.edu/rollcontrol/
If i were doing it i'd use 4 mechanically independent servos. I estimate the reliability of doing this is about 1/2 of the single servo system being proposed. (Can we put the cool linkage drawing on the wiki page?) Despite the reduced reliability, i still think the 4 independent scheme is a winner. * Reliability is still very high * Mechanically ready for full flight control * Mechanically simpler * Same system that must be developed down the road anyway In the 4 independent scheme, the servos must be individually trimmed. To do this i would consider an absolute magnetic shaft encoder: http://www.austriamicrosystems.com/eng/Products/Magnetic-Encoders/Linear-Encoders/AS5311 http://www.rls.si/default.asp?prod=am8192B1 There is firmware involved in slaving the servos, which has reliability implications, however, we need to evolve some best practices on this anyway. Mechanical stops can be added to the servo design to limit the potential for damage in the event of servo or controller malfunction. -------------------------------------------------------------------------- The White Rabbit put on his spectacles. "Where shall I begin, please your Majesty ?" he asked. "Begin at the beginning,", the King said, very gravely, "and go on till you come to the end: then stop." -- Lewis Carroll _______________________________________________ psas-airframe mailing list [email protected] http://lists.psas.pdx.edu/mailman/listinfo/psas-airframe
