Sensorless Field Oriented Control for a Permanent Magnet Synchronous Motor Using Sliding Mode Observer

1 Permanent Magnet Synchronous Motors

1.1 Mathematical Model

2 Field Oriented Control

2.1 FOC Based Variable Frequency PMSM Drive

3 Rotor Position and Speed Estimation

3.1 Start Up Procedure

3.2 Sliding Mode Observer

3.3 Rotor Angle Calculation

3.4 Rotor Speed Calculation

4 Field Oriented Control (FOC) Implementation

4.1 SAME70 MCU Features and Peripheral Settings

6 Appendix: Architectural Highlights of 32-bit MCUs for Motor Control Applications

8 Revision History

Microchip Information

Microchip Devices Code Protection Feature