Dynamic Measurement Error Modeling and Analysis in a Photoelectric Scanning Measurement Network

Abstract

A photoelectric scanning measurement network is a kind of distributed measurement system based on the principle of angle intersection, in which transmitters and photoelectric receivers are the main parts. The scanning lasers in transmitters emit signals and they are obtained by receivers at the measured points. Then the coordinate of the receiver can be calculated by the optimization algorithm. Its outstanding static measurement performance and network scalability capacity give it great potential in large-scale metrology. However, when it comes to moving targets, the angle intersection failure will produce a dynamic error, which limits its further application. Nowadays the research on error modeling and compensation is also insufficient though it has been the crucial concern. In this paper, we analyzed error causes and constructed a dynamic error model. Dynamic error characteristics and the law of propagation were discussed. The measurement uncertainty at different movement speeds was quantized through simulation experiments. To verify the error model, experiments were designed and the dynamic error was evaluated in practice. It matched well with simulations. The model was tested to be reasonable, and provided theoretical support for error compensation.

Special Issue on Precision Dimensional Measurements

“…An efficient real-time tunnel deformation monitoring technology based on laser and machine vision was developed by Qiu et al [36]. In the large-scale metrology, Shi et al use photoelectric scanning measurement network to model dynamic errors [37]. Wang designed a structure for accurately determining the mass and center of gravity of rigid bodies [38].…”

Omnidirectional Sensor Design for Distributed Laser Measurement Systems

“…It stands out for its high measurement accuracy, strong interactivity, wide measurement range, and strong field practicability [3]. Within this system, the photoelectric sensor plays a crucial role, directly influencing the measurement range and accuracy [4]. These sensors not only receive optical signals, but also adapt to various measurement environments, performing functions like information conversion, extraction, and calculation.…”

A Sub-Regional Calibration Method That Can Accomplish Error Compensation for Photoelectric Scanning Measurement Network

“…Compared with these previous methods, photoelectric scanning measurement network, having concurrent measurement capability, has developed rapidly and shown great potential in the large-scale manufacturing industry [8]. As a representative, the workshop measurement positioning system (wMPS) has been widely advocated in the manufacturing industry, and intensive research efforts have been conducted on this system [9,10,11,12,13,14].…”