An Adaptive Nonlinear Extended State Observer for the Sensorless Speed Control of a PMSM

Figure 8

Simulation waveforms of actual and estimated , when speed is 2000 r/min and the load torque is 1 Nm. (a) Actual and estimated obtained by the proposed ANLESO. (b) Actual and estimated obtained by the proposed ANLESO. (c) Actual and estimated obtained by the conventional SMO. (d) Actual and estimated obtained by the conventional SMO.

(a)

(b)

(c)

(d)