In general, autopilots are applied to improve the performance of missiles, which may be possibly contradictory to system robustness. This paper focuses on design and stability radius computation of the two-loop autopilot. At first, based on output feedback, two-loop autopilot is introduced and designed specifically using pole placement method. A criterion about poles selection is given as follow: the real part of autopilot poles should be no more than a third of fin poles. Secondly, in order to validate robustness of the designed autopilot, a lemma in the sense of Holder 2-norm is derived with the theory of polynomials family, by which stability radius for two-loop autopilot is obtained easily. Finally, an example of autopilot design is offered in great detail. Four different designs are compared for discussing the relationship of performance and robustness. Stability radius is computed by the new lemma, and stability regions are obtained respectively. The analysis and simulation results verify the feasibility of robustness validation. Moreover, it indicates that actuator bandwidth should be three times the autopilot bandwidth. It is proved to be a reasonable compromise between performance and robustness.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Computation of stability radius for a third-order control system


    Contributors:
    Fan, Shipeng (author) / Qinghai Gong (author) / Kunfeng Lu (author) / Sun, You (author) / Li, Ling (author)


    Publication date :

    2016-08-01


    Size :

    333333 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Vehicle stability control method based on wheel radius self-learning

    QIN LONG / ZHANG FANWU / WANG KAI et al. | European Patent Office | 2021

    Free access

    FPGA Based Parallel Architecture for the Computation of Third-Order Cross Moments

    Syed Manzoor Qasim / Shuja Abbasi / Saleh Alshebeili et al. | BASE | 2008

    Free access

    Stability and strength of undercarriage radius rod

    Person, P. | Engineering Index Backfile | 1954


    Computation of Steady Flow in a Turbomachinery Stage by a Third-Order Accurate Scheme

    Yao, J. / Ji, S. / Liu, F. et al. | British Library Conference Proceedings | 1998