Speed Sensor-Less Control System of Surface-Mounted Permanent Magnet Synchronous Motor Based on Adaptive Feedback Gain Supertwisting Sliding Mode Observer

Table 6

Speed error and rotor position error.

Result	SMO	STA-SMO	AFG-STA-SMO	Unit
Error (a)	26	3.2	0.17	Rpm
Error (b)	35	3.2	0.4	Rpm
Position error (a)	0.3	0.03	0.0016	Deg
Position error (b)	0.8	0.2	0.006	Deg