tailieunhanh - Ultrasonic vibration measurement using heterodyne interferometry and SDR phase meter

This paper combines a heterodyne interferometer and a real-time SDR phase meter, demonstrating an ultrasonic vibration instrument’s high-speed vibrating measurement capabilities. A double-pass interferometer is implemented to produce interference signals modulated with a sine waveform phase change associated with a tool’s ultrasonic vibrating displacement, calculated by the phase meter’s quadrature demodulation algorithm. |

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