Double position sensitive detectors (PSDs) based measurement system of trajectory tracking of a moving target

作者：Lu, Xiaohong^*; Jia, Zhenyuan; Hu, Xiaochen; Wang, Wentao

来源：Engineering Computations, 2017, 34(3): 781-799.

DOI：10.1108/EC-08-2015-0214

• Measurement system
• Moving target
• PSD
• Trajectory tracking

Purpose - The purpose of this paper is to achieve the trajectory tracking measurement of a moving target based on double position sensitive detectors (PSDs). @@@ Design/methodology/approach - In this paper, first, a double PSD-based measurement system including hardware system and software system is built up. Then, the working principle is studied to calculate parameters, and calibration experience is conducted. Finally, this double PSD-based measurement system is used to test angular displacement and axial displacement on the tool magazine and automatic tool changer. @@@ Findings - In the experiment, the maximum position error of a space point based on double PSD measurement system is 0.8566 mm, and the average error is 0.4716 mm. These results show that the built double PSD-based measurement system of trajectory tracking of a moving target is reasonable. @@@ Originality/value - Combining the characteristics of the PSD and principles of binocular visual measurement, a non-contact three-dimensional measuring system based on double PSDs is developed. The designed double-based measurement system is quite suitable for measurement of a fast-changing illuminant or in the case that the tracking accuracy is not tight.

• 出版日期2017
• 单位大连理工大学