Error compensation and accuracy analysis of laser measurement system based on laser-beam calibration

Lu, Jie; Cai, Zhiqin; Yao, Bin; Cai, Sijie; Ma, Xiaofan; Liu, Wanshan

doi:10.1016/j.ijleo.2019.163272

Cited by 9 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The holes will lead to a failed 3D model establishment. In fact, the larger the gap between the fitted center and the actual center is, the larger the hole in the middle of established model (Wu et al, 2020;Lu et al, 2020). In order to observe the clustering phenomenon, Figure 9c shows the side view of tooth model established by fitting the center of the light plane equation to the center of the circle.…”

Section: Analysis Of Calibration Results Of Rotation Centermentioning

confidence: 99%

“…In order to observe the clustering phenomenon, Figure 9c shows the side view of tooth model established by fitting the center of the light plane equation to the center of the circle. Since the center of the fitted circle is sometimes slightly smaller than the actual center of the circle, which usually leads to a excessive convergence (Lu et al, 2020). Figure 9d shows the tooth model created by fitting the center of the circle with the rotation hybrid calibration method.…”

Section: Analysis Of Calibration Results Of Rotation Centermentioning

confidence: 99%

See 1 more Smart Citation

Rotation Center Fitting based on Rotation Hybrid Calibration Method

Guo¹,

Lei²,

Liu³

et al. 2020

American Journal of Biochemistry and Biotechnology

View full text Add to dashboard Cite

Line laser rotation scanning can obtain accurate full contour information of the object with non-destructive testing. The key point in this process is the calibration rotation center. The calibration of the rotation center is mainly obtained through the characteristics of circles. Existing calibration schemes lead to a holed or over-gathered result. In order to solve this problem, this paper proposes a rotation hybrid calibration method to calibrate the rotation center. First, the data us ed to fit the center of the circle is screened by the symmetrical method to meet the requirements and then the points that meet the requirements are simulated by the least square method circle center. The experimental results show that the proposed method has a higher stability and accuracy compared to existing calibration methods and the calibration accuracy can reach 0.029 mm.

show abstract

Section: Analysis Of Calibration Results Of Rotation Centermentioning

confidence: 99%

Section: Analysis Of Calibration Results Of Rotation Centermentioning

confidence: 99%

Rotation Center Fitting based on Rotation Hybrid Calibration Method

Guo¹,

Lei²,

Liu³

et al. 2020

American Journal of Biochemistry and Biotechnology

View full text Add to dashboard Cite

show abstract

“…However, this method is not applicable to five-axis gantry machine tools. Lu et al [13] employed sine gauge calibration blocks for calibrating the beam direction of the LDS on a four-axis measurement platform. They considered the effects of rotation and deflection angles, introducing a calibration technique for the laser beam that is effective in various positions and orientations.…”

Section: Introductionmentioning

confidence: 99%

A novel pose calibration method for laser displacement sensor in the five-axis on-machine measurement system

Wang,

Huang,

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The five-axis on-machine measurement system, equipped with a laser displacement sensor, offers an effective approach for conducting on-site inspections of freeform surface parts. It is crucial to address the calibration error pertaining to the sensor’s pose, encompassing both the beam direction and the zero position, as it directly impacts the measurement accuracy. This paper presents a new approach for the calibration of a laser displacement sensor’s pose, which is mounted on the spindle of a five-axis gantry machine tool. The proposed method utilizes measurements taken from multiple angles of a standard ball. Through the utilization of spherical constraints and coordinate translation transformation, the Levenberg-Marquardt iteration method is employed to derive the sensor’s beam direction, while the least square method is used to determine the sensor’s zero position. Applying this proposed method, the maximum error in the distance between the centers of the standard double ball is below 0.008 mm, which can meet the precision requirements of on-site inspection of freeform surface parts.

show abstract

“…As the measurement accuracy is easily disturbed by various factors using the 1D laser sensor [17], Li et al [18] proposed an error compensation method based on the least squares method and function-library compensation method to reduce the tilt error. Furthermore, Lu et al [19] introduced a novel measurement strategy based on a 4D error compensation model for measuring the free-form surfaces in laser measurement systems. The measured objects in the above mentioned studies have similarities and differences with the geometry of a wheel profile.…”

Section: Introductionmentioning

confidence: 99%

Measurement and evaluation of wheel profiles of a rail vehicle on an underfloor wheelset lathe

Liu¹,

Li²,

Hou³

et al. 2022

Meas. Sci. Technol.

View full text Add to dashboard Cite

Wheel profile form directly affects the dynamic behaviour of rail vehicles. Moreover, it is an important factor to ensure the safe running of a high–speed vehicle. As off–line measurements do not provide high–efficiency and high–accuracy wheel profile measurements, we focused on on–machine measurement and evaluation for obtaining the wheel profiles of a rail vehicle in this study. By combining the wheel machining with the wheel measurement, the measurement and evaluation of radial and axial wheel profiles on the underfloor wheelset lathe were proposed. The measurement of radial wheel profile based on two laser sensors was introduced, and the corresponding error models of on–machine measurement were established. The error models were used to separate the measurement errors from the measurement data. This can improve the accuracy of measuring the radial wheel profile effectively. For measuring the axial wheel profile, an adaptive correction method of profile error was proposed to suppress the measurement error, which was the basis for obtaining an accurate equivalent conicity. By measuring radial and axial wheel profiles, polygonisation evaluation and equivalent conicity were obtained to evaluate the radial and axial dynamic behaviours of a wheelset, respectively. Finally, the measurements were applied to an underfloor wheelset lathe to verify the effectiveness of measuring wheel profiles. In this study, we not only improved working efficiency for the machine tools, but also provided a high–accuracy measurement method for the wheel profiles of rail vehicle.

show abstract

Error compensation and accuracy analysis of laser measurement system based on laser-beam calibration

Cited by 9 publications

References 11 publications

Rotation Center Fitting based on Rotation Hybrid Calibration Method

Rotation Center Fitting based on Rotation Hybrid Calibration Method

A novel pose calibration method for laser displacement sensor in the five-axis on-machine measurement system

Measurement and evaluation of wheel profiles of a rail vehicle on an underfloor wheelset lathe

Contact Info

Product

Resources

About