Robust sensorless speed tracking controller for surface-mount permanent magnet synchronous motors subjected to uncertain load variations

L. T. Aguilar, R. Ramírez-Villalobos, A. Ferreira de Loza, L. N. Coria

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations

    Abstract

    We address a solution of the sensorless high-speed tracking control problem for surface-mount permanent magnet synchronous motors under load torque variations. Since the only available measurements are the stator currents, the proposed scheme consists of a second-order sliding-mode observer interconnected with an H controller. Thus, disregarding the use of additional sensors to measure the mechanical variables. The observer-controller interconnection is robust against uncertainties and unknown load torque variations. First, the observer estimates rotor angular position and speed variables, theoretically, in finite-time. Then, an H controller attenuates the effects of uniformly bounded disturbances. Sufficient conditions are provided to ensure that the closed-loop system is stable. Moreover, it is internally asymptotically stable in the absence of uncertainties and external disturbances. The analysis shows that the observer-controller system possesses an L2-gain less than a priori given disturbance attenuation level. Emulation trials showed the feasibility of the method.

    Original languageEnglish
    Pages (from-to)35-48
    Number of pages14
    JournalInternational Journal of Systems Science
    Volume51
    Issue number1
    DOIs
    StatePublished - 2 Jan 2020

    Keywords

    • -control
    • -gain analysis
    • second order sliding-mode observer
    • sensorless control
    • Surface-mounted PMSM

    Fingerprint

    Dive into the research topics of 'Robust sensorless speed tracking controller for surface-mount permanent magnet synchronous motors subjected to uncertain load variations'. Together they form a unique fingerprint.

    Cite this