A Two-stage Kalman Filter for Sensorless Direct Torque Controlled PM Synchronous Motor Drive
Figure 5
Simulation results for parameters estimation. (a) Actual rotor speed and estimated rotor speed (OTSEKF). (b) OTSEKF speed error. (c) Difference of rotor speed estimation between EKF and OTSEKF. (d) Actual rotor position and estimated rotor position (OTSEKF). (e) OTSEKF position error. (f) Difference of rotor position estimation between EKF and OTSEKF. (g) Estimated torque. (h) Estimated stator flux linkage.
