Resonance acoustic field position sensor

Date
2003-06-01Author
Dong, Shuxiang
Bai, Feiming
Li, Jiefang
Viehland, Dwight D.
Metadata
Show full item recordAbstract
An acoustic position sensor, based on a piezoelectric-sound-resonance cavity (PSRC), is reported in which a resonance acoustic field is used as the sensing mechanism. It has been discovered that an inserted object or an object motion in the sound radiation field results in changes in the resonance state of the PSRC. Experiments have demonstrated a high position resolution in the axial direction, and also good sensitivity in the transverse. (C) 2003 American Institute of Physics.