Mathematical Problems in Engineering / 2015 / Article / Fig 12

Research Article

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

Figure 12

Operating waveforms of estimated back EMF in steady state when speed is 500 r/min and the load torque is 1 Nm: (a) obtained by the proposed ANLESO and (b) obtained by the conventional SMO.

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