TY - JOUR
T1 - Robust sensorless speed tracking controller for surface-mount permanent magnet synchronous motors subjected to uncertain load variations
AU - Aguilar, L. T.
AU - Ramírez-Villalobos, R.
AU - Ferreira de Loza, A.
AU - Coria, L. N.
N1 - Publisher Copyright:
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2020/1/2
Y1 - 2020/1/2
N2 - 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.
AB - 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.
KW - -control
KW - -gain analysis
KW - Surface-mounted PMSM
KW - second order sliding-mode observer
KW - sensorless control
UR - http://www.scopus.com/inward/record.url?scp=85075446521&partnerID=8YFLogxK
U2 - 10.1080/00207721.2019.1692953
DO - 10.1080/00207721.2019.1692953
M3 - Artículo
AN - SCOPUS:85075446521
SN - 0020-7721
VL - 51
SP - 35
EP - 48
JO - International Journal of Systems Science
JF - International Journal of Systems Science
IS - 1
ER -