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Indexed by:Journal Papers

Date of Publication:2017-01-01

Journal:Engineering Computations

Volume:34

Issue:3

Page Number:781-799

Key Words:Measurementsystem, Moving target, PSD, Trajectory tracking

Abstract:Purpose– The purpose of this paper is to achieve the trajectory tracking measurement of a moving target
 based ondoubleposition 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-basedmeasurementsystemoftrajectorytracking ofa movingtarget isreasonable.
 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 thecase thatthetracking accuracy is nottight.