Double position sensitive detectors (PSDs) based measurement system of trajectory tracking of a moving target. Issue 3 (2nd May 2017)

• Record Type: Journal Article
• Authors: Lu, Xiaohong; Jia, Zhenyuan; Hu, Xiaochen; Wang, Wentao
• Is Part Of: Engineering computations. Volume 34:Issue 3(2017)
• Page Start: 781
• Page End: 799
• Publication Date: 2017-05-02
• Subjects: Measurement system -- Moving target -- PSD -- Trajectory tracking; Computer-aided engineering -- Periodicals; Computer graphics -- Periodicals; 620.00285
• DOI: 10.1108/EC-08-2015-0214
• Languages: English
• ISSNs: 0264-4401

Abstract

Abstract : 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.