Dual high-frequency signal injection resolves quadrant ambiguity to improve PMSM rotor position accuracy and operational stability.
A processor calculates output torque using rotor and elastic device angles measured by sensors.
A speed operation range identification system models motor characteristics and mechanical dynamics to determine maximum safe speeds.
A synchronous motor control method adjusts reactive current to generate voltage correction signals for precise torque regulation.
Synthesizes a second motor position output from an existing signal and estimated velocity to maintain torque control.