The invention discloses an electromotor dynamic / stable stage parameter identification method based on a
stator resistance observer. For the parameter identification at a dynamic stage of an electromotor, a
stator resistance T-S (Takagi-Sugeno)
fuzzy observer is introduced to obtain an actually-measured value of
stator resistance on the basis that the existing
MRAS (Model Reference
Adaptive System) method is still adopted, and dynamic correction is carried out on a rotating speed
reference model and a resistance
reference model according to the actually-measured value of the stator resistance; and for the parameter identification at a stable stage, the identification method for the rotating speed of a rotor is achieved by adopting the
MRAS method and the stator resistance T-S
fuzzy observer which are the same as those adopted in the parameter identification at the dynamic stage, and the identification method for the resistance of the rotor is achieved by adopting simple conversion. The electromotor dynamic / stable stage parameter identification method based on the stator resistance observer has the beneficial technical effects that the problem of inaccurate reference models is solved, the low-speed operating performance of the electromotor can be improved, the adoption of a current injection method is avoided, the current
injection equipment is saved, the complexity of a
system is lowered, the introduction of
torque ripple is avoided, and the like.