The digital model following controller for multivariable systems consists of a linear P-I-controller, nonlinear control laws, and a controller output optimization. To meet the physical limits of the helicopter, especially the rotor speed, a special actuator simulation is developed. A low order model and a helicopter simulation model are used for the investigations. The effectiveness of the control system in model following as well as in disturbance rejection is tested in numerical simulations. Limits of the model following control system are shown by model parameter variation. The influence of a decoupled model on the handling qualities of a helicopter are investigated in piloted simulations. Selected flight test results show the performance of the control system in model following and flying a helicopter in gusty environment. The simulation of two different helicopters in flight demonstrates the possibilities of in-flight simulation.


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    Title :

    Robust Digital Model Following Controller for Helicopters


    Contributors:
    G. Bouwer (author)

    Publication date :

    1988


    Size :

    157 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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