This study follows a previous author's work (Ref. 1) where a new laser probe was presented as a detector of air mass wind shear perturbation ahead of the vehicle; the probe informations are applied to a lateral digital autopilot input generating the necessary sideslip corrections minimizing trajectory errors due to the wind shear effects. Here the results of the state variable decoupling theory are applied to decouple the roll and yaw lateral motion as required to satisfy independently maneuvering and trajectory following specifications. The rudder channel gains, yielding the decoupling process and forcing the vehicle transient behaviour to reproduce the desidered response, are computed and the resulting multi-input-multi-out-put autopilot feedback structure is described. The software and hardware aspects of the digital autopilot, including the laser package and microprocessors resolving the desidered control laws, are presented and the system simulation results are shown for the evaluation of the system dynamical behaviour in response to a wind shear perturbation. The present study indicates the feasibility of a flight control system made active in controlling the wind shear effects with the contribution of a laser doppler velocimeter which, when judged on the basis of the data available at this phase of the research, looks very promising as a predictor sensor of the airmass dynamics ahead of the vehicle.


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    Title :

    Digital implementation of a laser active flight control system with processes decoupled states


    Additional title:

    Digitale Realisierung eines aktiven Laser-Flugkontrollsystems mit prozessorgesteuerten, entkoppelten Zustaenden


    Contributors:
    Danesi, A. (author)

    Published in:

    Publication date :

    1983


    Size :

    14 Seiten, 10 Bilder, 1 Tabelle, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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