Using linear-optimal estimation and control techniques, digital-adaptive control laws have been designed for a tandem-rotor helicopter which is equipped for fully automatic flight in terminal area operations. Two distinct discrete-time control laws are designed to interface with velocity-command and attitude-command guidance logic, and each incorporates proportional-integral compensation for non-zero-set-point regulation, as well as reduced-order Kalman filters for sensor blending and noise rejection. Adaptation to flight condition is achieved with a novel gain-scheduling method based on correlation and regression analysis. The linear-optimal design approach is found to be a valuable tool in the development of practical multivariable control laws for vehicles which evidence significant coupling and insufficient natural stability.


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    Title :

    Digital controllers for VTOL aircraft


    Contributors:

    Conference:

    Conference on Decision and Control ; 1976 ; Clearwater, FL, US


    Publication date :

    1976-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Digital controllers for VTOL aircraft

    Stengel, R.F. / Broussard, J.R. / Berry, P.W. | Tema Archive | 1978


    Digital Controllers for VTOL Aircraft

    Stengel, Robert F. / Broussard, John R. / Berry, Paul W. | IEEE | 1978


    The design of digital-adaptive controllers for VTOL aircraft

    Stengel, R. F. / Broussard, J. R. / Berry, P. W. | NTRS | 1976


    The Design of Digital-Adaptive Controllers for VTOL Aircraft

    R. F. Stengel / J. R. Broussard / P. W. Berry | NTIS | 1976


    Minimum Sensitivity Controllers with Application to VTOL Aircraft

    Gourishankar, V. / Zackowski, G. V. | IEEE | 1980