A Two-stage Kalman Filter for Sensorless Direct Torque Controlled PM Synchronous Motor Drive
Figure 6
Experimental results for parameters estimation. (a) Real speed, estimated speed (OTSEKF), and estimated speed error. (b) Real rotor position, estimated rotor position (OTSEKF), and estimated position error. (c) Difference of speed estimation between EKF and OTSEKF. (d) Difference of rotor position estimation between EKF and OTSEKF. (e) Estimated torque. (f) Estimated stator flux linkage.
