According to the resolver signal processing circuit with the weakness of low accuracy,large temperature drift, slow response and difficulty of quadrant judgments in full authority digital electronic control(FADEC) system of aero-engine,a resolver technology of signal modulation-demodulation based on FieldProgrammable Gate Array(FPGA) was presented by DDS excitation,analog integrator and quadrant judgment.The maximal acquisition error was less than 0.208‰,the error from temperature drift was not more than0.1...
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