Research on Permanent Magnet Synchronous Motor Rotor Information Control Based on MRAS Algorithm

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 − 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. Subject Categories and Descriptors B.1.2 [Control Structure Performance Analysis and Design Aids]: Hardware Control B.2 [Arithmetic and Logic Structures] General Terms : Mathematical Model, Hardware Control