Motor Phase Measurement Normalization Algorithm

The patent applies parameter changes by introducing normalization scale factors and offset values for each phase to transform the phase measurements. The normalization process changes the parameters (amplitude and offset) of each phase waveform individually, scaling them to a common reference frame. This resolves the measurement precision issue by ensuring all phases are measured on an equal basis, eliminating the tracking performance errors caused by phase imbalances.

The patent implements preliminary action by performing normalization calibration before the motor control operation begins. The offset values and normalization scale factors are determined in advance through a calibration process that rotates the input vector through discrete steps to capture the phase waveforms. This preliminary normalization ensures that subsequent rotor position estimation and control operations use balanced, accurate phase measurements, eliminating estimation errors without adding complexity to the real-time control algorithm.

The patent applies self-service by having the calibration process automatically determine the offset values and normalization scale factors from the measured phase waveforms themselves. The system rotates the input vector through discrete steps, captures the phase waveforms, and autonomously computes the normalization parameters without requiring external intervention or complex manual calibration procedures. This self-calibrating approach achieves waveform symmetry while keeping the calibration process relatively simple and automated.