00000nam 2200000zi 4500 9.881271 CaOODSP 20221107170013 m o d f cr |n||||||||| 200211s1975 onca||| ob f000 0|eng d CaOODSP eng rda CaOODSP n-cn--- Co24-345/1975E-PDF Ruta, R., author. Technology survey of on-board programmable digital computers for satellite attitude control applications / prepared by R. Ruta. [Ottawa] : [Department of Communications], [1975] 1 online resource (1 volume (various pagings)) : figure text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references. "The implementation of attitude control system control functions is usually made by special electronics design comprising discrete electronics in which each individual function is performed by a distinct part of the electronics. Such systems are usually inflexible in design and difficult to implement when sophisticated control schemes are required. Digital control systems permit precise control function generation (elimination of drift and noise), implementation of complex control algorithms and high reliability. Digital control systems are best implemented by a programmable control system processor. This report, prepared under contract for the Department of Communications, presents the results of a study to determine the state-of-the-art of spaceworthy computer hardware and to make recommendations for an on-board computer for the multi-purpose bus satellite Attitude Control System"--Summary. Artificial satellites Attitude control systems. Airborne computers. Satellites artificiels Systèmes de commande d'orientation. Ordinateurs de bord (Instruments d'aéronautique) Canada. Department of Communications. Spar Aerospace Products Ltd. PDF 4.70 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-345-1975-eng.pdf