Research on Permanent Magnet Synchronous Motor Rotor Information Control Based on MRAS Algorithm
Gu Chunlei
Journal of Digital Information Management, Vol. 12, No. 6, 2014.
DOI: 
Link: http://dline.info/fpaper/jdim/v12i6/13.pdf
Abstract:
Because of its excellent performance and
combination with high precision control method,
permanent magnet synchronous motor (PMSM) has wider applications in such areas as industry, social life, aerospace and national defense. This paper introduces the structure of the PMSM. Then, it gets the mathematical model that PMSM rotates on the x âˆ’ y coordinate system under the stator flux linkage according to the theory of
direct torque analysis coordinate systems which involves the coordinate transformation, combined with the coordinate system and a mathematical model of PMSM in a three-phase PMSM stationary coordinate system. Afterwards, it analyses the basic principles of MRAS control, and designs an adaptive location identifier based on stator flux reference to realize identification of rotor
speed and position, which can avoid the  introduction of the speed sensor with complex system and high maintenance costs.