Print Email Facebook Twitter Experimental and system study of Reaction Wheels. Part II: System study on wheel state feedback Title Experimental and system study of Reaction Wheels. Part II: System study on wheel state feedback Author Prins, J.J.M. Institution National Aerospace Laboratory NLR Date 1982-02-01 Abstract The increasing power of on-board processors allows more freedom in the design and operation of reaction wheel control systems. This report discusses several performance and implementation aspects of the operation of wheel systems which have their own internal feedback control system. A model following control concept is found to be superior. The reduction in wheel induced spacecraft attitude noise by employing wheel velocity or wheel attitude feedback is analysed in the continuous domain. The digital wheel controller implementation aspects discussed include conventional z-plane PD type designs, use of a Kalman filter for wheel state observation, controller pole placement and linear quadratic optimal control design. For most designs a wheel sensor of the pulse counting type is assTomed. Finally, autonomous wheel failure detection and reconfiguration is dealt with. Subject Satellite attitude controlFeedback controlPerformance predictionKalman filtersOptimal controlDigital systemsReaction wheelsError analysisTransfer functionsTorqueAngular momentumError signalsTorque motorsControllersNoise spectra To reference this document use: http://resolver.tudelft.nl/uuid:b77cb6f6-3843-4b2d-ba06-674ade495d15 Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR-TR 82003 U Part 2 Part of collection Aerospace Engineering Reports Document type report Rights (c)1982 National Aerospace Laboratory NLR Files PDF NLR_TR_82003_U_PART_II.pdf 36.43 MB Close viewer /islandora/object/uuid:b77cb6f6-3843-4b2d-ba06-674ade495d15/datastream/OBJ/view