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Permanent magnet synchronous motors (PMSM) are widely used due to theirnumerous benefits. It is critical to get rotor position and speed informationin order to operate the motor accurately. Sensorless control techniques haveemerged as a popular study area both at home and overseas. The sliding modeobserver (SMO) may indirectly detect rotor position and has the benefits ofeasy implementation and efficient algorithms. In this study, a mathematicalmodel for sensorless control of a PMSM is developed using SMO, vector control,and other techniques. With a surface-mounted PMSM as the study object, amathematical model for sensorless control of PMSM is developed. PMSM's slidingmode observer model is built in the matlab/simulink environment. Experimentsdemonstrate that the system can track the rotor position and speed of the motorprecisely and fulfill the requirements of sensorless vector control of PMSM.

Simulation of Non-inductive Vector Control of Permanent Magnet Synchronous Motor Based on Sliding Mode Observer