SELF-SENSING ACTUATOR UTILIZING POTICAL FIBER AND PIEZOELECTRIC MATERIAL AND OPERATING METHOD OF THE SAME

摘要

The present invention detects vibration of a structure, and relates to a sensing actuator (sensoriactuator) capable of applying a control force at the same time, more specifically to an existing extrinsic Fabry-Perot (EFPI, Extrinsic Fabry-Perot Interferometer) can apply a control force to the optical fiber sensor the configuration further coupled to the piezoelectric material, and further by comprising a self-sensing bridge (self-sensing bridge) circuit for extracting directional information when using a piezoelectric material in the actuator, expanding the range of detectable deformation and detection using the one to be used directly a signal to the actuator based on the characterized optical fiber and the sensing piezoelectric material actuators and relates to its method of operation,; Are respectively inserted on both sides of the capillary quartz glass tube, the first and second single fixed to both ends of the capillary-like quartz glass tube while the air gap between the optical fiber and the mode; And a piezoelectric material that can be used as the an actuator secured to the outer peripheral surface of the capillary quartz glass tube; When a control force applied to the piezoelectric material, is characterized by self-extracting only purely mechanical strain includes a detection bridge (bridge self-sensing) circuit.