pp. 547-557
S&M1021 Research Paper of Special Issue https://doi.org/10.18494/SAM.2014.1014 Published: October 21, 2014 Development of a Piezo-driven Mechanical Stage Integrated Microdisplacement Sensor for Calibration of Displacements [PDF] Toshihiro Takeshita, Takuma Iwasaki, Kota Harisaki, Hideyuki Ando, Eiji Higurashi and Renshi Sawada (Received January 16, 2014; Accepted June 19, 2014) Keywords: displacement sensor, optical sensor, piezoelectric actuator, position control, hysteresis
We fabricated a mechanical stage driven by a piezoelectric actuator and built in a microdisplacement sensor, which is used to decrease the effect of hysteresis and creep in the piezoelectric actuator. The displacement sensor consists of a vertical-cavity surface-emitting laser (VCSEL), eight two-dimensional monolithically integrated photodiodes (PDs), a frame, and a cover glass. The size of the sensor chip is 3.0 mm by 3.0 mm with a thickness of 0.7 mm. The maximum variation in the position of the mechanical stage caused by hysteresis is 7.5 µm without control when the movement range of the mechanical stage is 84.4 µm. By controlling the applied voltage using our microdisplacement sensor, we reduce the effect of the hysteresis, and the variation in position decreased to 1.9 µm.
Corresponding author: Toshihiro TakeshitaCite this article Toshihiro Takeshita, Takuma Iwasaki, Kota Harisaki, Hideyuki Ando, Eiji Higurashi and Renshi Sawada, Development of a Piezo-driven Mechanical Stage Integrated Microdisplacement Sensor for Calibration of Displacements, Sens. Mater., Vol. 26, No. 8, 2014, p. 547-557. |