A method by which modern and classical control theory techniques may be integrated in a synergistic fashion and used in the design of practical flight control systems is presented. A general procedure is developed, and several illustrative examples are included. Emphasis is placed not only on the synthesis of the design, but on the assessment of the results as well. The first step is to establish the differences, distinguishing characteristics and connections between the modern and classical control theory approaches. Ultimately, this uncovers a relationship between bandwidth goals familiar in classical control and cost function weights in the equivalent optimal system. In order to obtain a practical optimal solution, it is also necessary to formulate the problem very carefully, and each choice of state, measurement and output variable must be judiciously considered. Once design goals are established and problem formulation completed, the control system is synthesized in a straightforward manner. Three steps are involved: filter-observer solution, regulator solution, and the combination of those two into the controller. Assessment of the controller permits and examination and expansion of the synthesis results.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Practical optimal flight control system design for helicopter aircraft. Volume 2: Software user's guide


    Contributors:

    Publication date :

    1979-03-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






    User's Guide for the Flight Design System (FDS)

    H. R. Ramsey / M. E. Atwood / W. G. Frisius et al. | NTIS | 1980


    User's guide for the Flight Design System (FDS)

    Ramsey, H. R. / Atwood, M. E. / Frisius, W. G. et al. | NTRS | 1980