S. Benaggoune  , S. Belkacem  , R. Abdessemed  , 
    Comparative Study of Direct Torque and Nonlinear Controls of a Permanent Magnet Synchronous Motor,
    International Journal of Electrical and Power Engineering,
    Volume 1,Issue 2,
    2007,
    Pages 189-195,
    ISSN 1990-7958,
    ijepe.2007.189.195,
    (https://makhillpublications.co/view-article.php?doi=ijepe.2007.189.195)
    Abstract: We present in this study, a comparative study between two structures of control, the Direct Torque Control (DTC) and the Non-Linear Control (NLC) of the Permanent Magnet Synchronous Motor (PMSM). To illustrate the performance and the robustness of these two control techniques, simulation results are presented.
    Keywords: Direct Torque Control (DTC);Permanent Magnet Synchronous Motor (PMSM);Nonlinear Control (NLC);input-output linearization;differential geometry theory;robustness