Eddy current displacement sensor with ultrahigh resolution obtained through the noise suppression of excitation voltage

@article{Zhao2019EddyCD,
  title={Eddy current displacement sensor with ultrahigh resolution obtained through the noise suppression of excitation voltage},
  author={G. F. Zhao and Jin Ying and L. Wu and Z. Feng},
  journal={Sensors and Actuators A-physical},
  year={2019},
  volume={299},
  pages={111622}
}
Abstract This paper presents a method for heightening the resolution of an eddy current sensor (ECS). A typical ECS based on AC bridge and orthogonal phase sensitive detector is used to explain the principle and is verified with experiments. For this type of ECS, the noise in the excitation voltage applied on the bridge is considered to have an important influence on the sensor’s resolution. A high-Q passive LC bandpass filter used for depressing the noise in the excitation voltage is designed… Expand
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