This paper presents a 3–DOF precision positioning system in order to meet the demands of precision positioning for parts in aviation field. The system is driven by three packing piezoelectric actuators and guided by flexure hinges. Strain sensors are adapted to realize close loop control for the piezoelectric actuators. Three laser displacement sensors are employed to measure the position and orientation of the target. Moreover, a kinematics calibration method based on laser displacement sensors is proposed. At last, the precision positioning system is verified by the experiment that the max errors along X and Y are 5.4% and 8.18%, respectively.
基金资助:航空科学基金项目(2015ZE25014、2015ZE25002)。
引用本文:
尚江坤,杜兆才. 一种三自由度精密定位系统研究[J]. 航空制造技术, 2018, 61(22): 77-81.
SHANG Jiangkun, DU Zhaocai. Study on a 3–DOF Precision Positioning System. Aeronautical Manufacturing Technology, 2018, 61(22): 77-81.