scholarly journals Small diameter hole profile measuring system and calibration method for contactless sensor with fine fiber probe

2021 ◽  
Vol 18 ◽  
pp. 100173
Author(s):  
Hideki Morii ◽  
Hikaru Masuta ◽  
Tatsuro Watanabe ◽  
Hiroaki Kimura ◽  
Katsufumi Moriyama ◽  
...  
Keyword(s):  
Small Diameter ◽  
Calibration Method ◽  
Measuring System ◽  
Fiber Probe ◽  
Diameter Hole ◽  
Fine Fiber ◽  
Hole Profile

scholarly journals Development of a Micro Hole Measuring System Using an Optical Fiber Probe (1st Report)

2009 ◽  
Vol 75 (12) ◽  
pp. 1476-1481 ◽  
Author(s):  
Hiroshi MURAKAMI ◽  
Akio KATSUKI ◽  
Hiromichi ONIKURA ◽  
Takao SAJIMA ◽  
Eiji KONDO
Keyword(s):  
Optical Fiber ◽  
Measuring System ◽  
Fiber Probe ◽  
Optical Fiber Probe ◽  
Micro Hole

Research on Calibration Method for Small Diameter Directional Gyro Inclinometer

2013 ◽  
Vol 846-847 ◽  
pp. 504-512
Author(s):  
Gui Hua Kang
Keyword(s):  
Mathematical Models ◽  
Continuous Measurement ◽  
Small Diameter ◽  
Calibration Method ◽  
Angular Speed ◽  
Experiment Data ◽  
Scale Factors ◽  
Input And Output ◽  
Measurement Mode ◽  
The Relationship

This paper introduces a new method for small diameter directional gyro inclinometer calibration with continuous measurement mode. The mathematical models referring to the relationship between the input and output of the accelerometers and the gyro are established. Experiment has been conducted for different angular speed and different positions on a three-axis turntable. We totally obtained 36 groups of experiment data of different angular speed regarding to different positions. Through the application of the established mathematical models and by means of computer aided data procession, the scale factors, installation error and static drift for the gyro inclinometer are calculated. Thus, the inclinometer calibration is implemented. It has been verified that this new calibration method enables us to quickly and effectively calibrate gyro inclinometer. The established mathematical model has been proved to be exact and effective. The whole operation is simple, quick and reliable.

Improving the Accuracy of Robot-Based Measuring System by Calibrating Laser-Stripe Scanner Model and Hand-to-Scanner Transformation

2010 ◽  
Vol 44-47 ◽  
pp. 707-711
Author(s):  
Ai Guo Li ◽  
Xiang Wu ◽  
De Feng Wu ◽  
Wen Biao Wang
Keyword(s):  
Industrial Robot ◽  
Calibration Method ◽  
Reference Points ◽  
Measuring System ◽  
Calibration Error ◽  
Scanning System ◽  
System A ◽  
Laser Stripe ◽  
Object Inspection ◽  
Scanner Calibration

This paper focuses on the system for object inspection by use of a laser stripe scanner and an industrial robot. In order to ensure the precision of the scanning system, a one-stage calibration method is proposed. This scheme mainly utilizes a circular-marked board as calibration target and calibrated the scanner model and hand-to-scanner transformation simultaneously using the same reference points. Therefore the influences of the scanner calibration error on the hand-to-scanner calibration can be eliminated naturedly. Finally, some experimental results are reported and analyzed.

Monitoring of End-Mill Behavior with Its Projection Image

2006 ◽  
Vol 315-316 ◽  
pp. 474-480
Author(s):  
Dun Wen Zuo ◽  
Yoshihiro Kawano
Keyword(s):  
High Speed ◽  
Small Diameter ◽  
Milling Process ◽  
Measuring System ◽  
End Mill ◽  
Static State ◽  
High Speed Cutting ◽  
Projection Image ◽  
Image Width ◽  
End Mills

End mills with small diameter have found their wide application with the development of high-speed cutting. It becomes more and more important to develop effective methods to monitor and control the milling process with small end mills. In this paper, a measuring system of projection image for small end mills is introduced, and the application of the projection image to monitor the behavior of the end mill is discussed. It is found that for static state of the end mill, the measurement accuracy can be easily controlled within 1 μm. When the end mill rotates, it is not so difficult to control the accuracy within 3 μm. By using of the change in image width, the radial wear of end mill can be predicted. On the other hand, if the centre shift of the image is pre-measured, the deflection of the end mill during cutting can be predicted.

scholarly journals Increasing number of small hole diameter microfracture compared with traditional microfracture in same size cartilage defects and effect of HA based aselluler scaffold. An animal study

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0008
Author(s):  
Gökçer Uzer ◽  
Nuh Mehmet Elmadağ ◽  
Fatih Yıldız ◽  
Yunus Güzel ◽  
Olgu Enis Tok
Keyword(s):  
Small Diameter ◽  
Small Hole ◽  
Cartilage Tissue ◽  
Cartilage Defects ◽  
Constant Thickness ◽  
Control Group ◽  
Trochlear Groove ◽  
Acellular Matrix ◽  
Diameter Hole ◽  
Small Holes

Purpose: The purpose of this study is small hole microfracure method comparing with traditional microfracture method and investigation of effect of HA based acellular matrix scaffold on microfracture area. Materials-Methods: 21 Twenty-one New Zealand white rabbits were used for the in vitro portion of this study, bilateral knee joint from the same rabbit were same technic. An articular cartilage defect was established in the femoral trochlear groove about 5 mm. Control group was established alone microfracture (MF). 6 groups were formed in this study and each group has 3 rabbits and their six knees. In 3 groups were applied different number of small diameter hole microfracture (4,5,6 small holes microfracture respectively)and the other 3 groups were applied different number of small diameter hole microfracture (4,5,6 small holes micro fracture respectively added HA based acellular matrix scaffold in the same size ostechondral lesion. The regenerated tissues were harvested for gross morphology, histology at 12 weeks postoperatively. Results: Cartilage were regenerated, maintaining a constant thickness of cartilage. MF group has worse Wakitani scores than 6 small diameter holes mıcrofracture groups(group 6 and group 7) in either parameter of the score. (p=0,043, p=0,016) Matrix addition did not contribute to healing. (p=1,000) Conclusions: Increasing number of the small diameter holes microfracture (minimum %15 of defect size) improves cartilage repair compared with traditional MF in the same size ostechondral lesion. Also small diameter holes microfracture combined with HA-based AM implantation didn’t result in improved quality of the regenerated cartilage tissue.

New float equivalent calibration method for 2D image measuring system

2015 ◽  
Author(s):  
Jiansong Gou ◽  
Zhong Wang ◽  
Ruijun Lu ◽  
Xinlan Shen
Keyword(s):  
Calibration Method ◽  
Measuring System

Dynamic Calibration for Measurement System of Form Measuring Instruments Based on Elliptical Standard

2017 ◽  
Vol 870 ◽  
pp. 203-208
Author(s):  
Jing Zhi Huang ◽  
Teng Hui Guo ◽  
Jiu Bin Tan ◽  
Tao Sun
Keyword(s):  
Measurement System ◽  
Measurement Data ◽  
Vibration Signal ◽  
Major Axis ◽  
Calibration Method ◽  
Measuring System ◽  
Measuring Instruments ◽  
Dynamic Calibration ◽  
Pass Filter ◽  
Low Pass Filter

A dynamic calibration method based on elliptical standard was put forward to further improve the calibration repeatability of measurement system of form measuring instruments. In this method, the radius difference of the major axis to the minor axis of elliptic contour acts as the standard value to calibrate the measuring system, and a low pass filter is used to filter the roughness, electrical noise and high frequency vibration signal which mixed into measurement data, the elliptic contour feature can be obtained accurately based on the low order harmonic properties. Compared with the traditional calibration method of flick standard, the proposed method ensure the calibration state is well consistent with the normal measuring state of the measuring system. Experimental results indicate that the calibration repeatability with 10nm can be achieved by measuring an elliptical standard. This method has been used in the calibration of measurement system of self-made ultra-precision cylindricity measuring instrument.

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