Resolution method and resolver for signals of rotating transformer
A resolver and angle signal technology, applied in the solver field, can solve the problems of high cost, cost reduction, high price, etc., and achieve the effect of cost reduction
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[0030] The method embodiment includes the following steps:
[0031] 1) Rotate the motor a full circle, collect the angle signal feedback from the resolver installed on the motor shaft, and obtain the peak and valley values of the angle signal waveform. The peak value is 4095, and the valley value is 0. In the digital signal processor 11 The sine table with a period of 0 to 1 / 4 period is stored in the sine table, the amplitude is 2048 to 4095, and the corresponding angle is 0 to 90°, which is used for table lookup and interpolation calculation.
[0032] 2) Sampling the current low-frequency sine signal U s (θ) and low frequency cosine signal U c (θ) and convert these two angle values into digital quantities X and Y respectively. At the same time, save the current X and Y as X_bak and Y_bak respectively, and compare with the next sampling result to determine the rotor rotation direction.
[0033] 3) Divide the angular position θ of the rotor into four quadrants, which are 0~90°,...
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