Overview:
The resolver phase shift coding scheme uses a rotary transformer as the shaft angle sensor to convert its phase angle proportional to its mechanical rotation angle. First, the excitation signal is used as the open-gate signal of the counter count, and the phase-shifted signal proportional to the mechanical rotation angle through the phase-shifting network is used as the closing signal of the counter. The open signal causes the counter to start counting, and the close signal causes the counter to stop counting. At this time, the size of the digital value stored in the counter is the digital number of the mechanical corner.
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