A High-Resolution Subdivision System of Frequency Difference Interference Signal Transformed by Phase Integral Operation
A technology of interference signal and integral operation, applied in general control system, control/adjustment system, computer control, etc., can solve problems such as limited frequency bandwidth of frequency multiplication phase-locking, extremely limited improvement of measurement accuracy, and limitation of digital demodulation, etc., to achieve The effect of high-resolution phase subdivision, fast measurement speed, high stability and reliability
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[0019] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0020] like figure 1 As shown, a frequency difference interference signal high-resolution subdivision system transformed by phase integration operation includes a reference signal processing circuit 1, a measurement signal processing circuit 2, a phase detector 3, a high-resolution phase detection group 4, a counter 5 and a The programming processor 6; the reference signal processing circuit 1 and the measurement signal processing circuit 2 respectively complete the photoelectric detection conversion, amplification, filtering and shaping of the measurement signal and the reference signal, output two-way square wave digital signals, and send them to the phase detector 3. Carry out frequency multiplication, and the output is the addition and subtraction digital pulse signal that changes with the phase, and the phase detector 3 performs frequency...
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