On-line measuring system of moving up-down-shift in fully mechanized mining face based on lidar

2021 ◽  
Author(s):  
Ying Tian ◽  
Yuyan Jiang ◽  
Wanshun Zang ◽  
Qiang Zhang ◽  
Boshen Wang ◽  
...  
Keyword(s):  
Measuring System ◽  
On Line ◽  
Mining Face

Rotating Accuracy Measurement System of Spindle Based on Three Point Method

2013 ◽  
Vol 333-335 ◽  
pp. 167-171
Author(s):  
Peng Qing Wang ◽  
Hong Jun Wang ◽  
He Peng Gao
Keyword(s):  
Personal Computer ◽  
Rotating Machinery ◽  
Point Method ◽  
Measuring System ◽  
Harmonic Suppression ◽  
Construction Site ◽  
Software Module ◽  
Accuracy Measurement ◽  
Sensor Arrangement ◽  
On Line

In order to measure the rotating machinery fault quickly and conveniently at a construction site, a new measuring system of rotating accuracy of spindle was developed according to three point method. With summarizing the principle of error separation technique based on three point method, the function, hardware construction and software module of this module were introduced. The problem of harmonic suppression is relieved by changing the sensor arrangement. The measuring system mainly consists of three eddy current sensors ,a acquisition card and a personal computer. After a few parameters were inputted, the rotation accuracy of calculation and display could be carried out automatically on line at a construction site.

Development of a measuring system for on-line in situ monitoring of composite materials manufacturing

2016 ◽  
Vol 90 ◽  
pp. 760-770 ◽  
Author(s):  
R. Polanský ◽  
J. Pihera ◽  
J. Komárek ◽  
R. Pavlica ◽  
P. Prosr ◽  
...  
Keyword(s):  
Composite Materials ◽  
In Situ Monitoring ◽  
Measuring System ◽  
On Line

MEASURING SYSTEM AND ITS UTILIZATION IN ON-LINE TEACHING OF AUTOMOTIVE SUBJECTS

2015 ◽  
Vol 1 (1) ◽  
pp. 70-74
Author(s):  
Miroslav Gutten ◽  
◽  
Jozef Jurcik ◽  
Dalibor Barta ◽  
◽  
...  
Keyword(s):  
Measuring System ◽  
On Line

Improvement Geometrical Precision in Sheet Incremental Forming Processes

Volume 3 ◽  
2004 ◽  
Author(s):  
G. Ambrogio ◽  
L. De Napoli ◽  
L. Filice ◽  
M. Muzzupappa
Keyword(s):  
Experimental Verification ◽  
High Speed ◽  
Incremental Forming ◽  
Measuring System ◽  
Process Duration ◽  
Stiffness Reduction ◽  
The Future ◽  
On Line ◽  
Open Program ◽  
Actual Geometry

Incremental forming is nowadays increasing its presence in industry as a new but interesting process, especially for production of small batches or unique components. Anyway, relevant efforts have to be spent in order to reduce the typical incremental forming processes drawbacks that risk to belittle the high advantages in terms of costs and simplicity. In fact, the process duration, usually equal to several minutes even if the operations are carried out on high speed numerical controlled units, and a certain tendency to produce no precise parts, can reduce industrial interest about incremental forming. A possible strategy to reduce the latter item is the design of modified trajectories able to take into account both the springback effects and the stiffness reduction due to the particular clamping equipment. In this paper the above introduced strategy is pursued integrating an on-line measuring system, based on a digital inspector, and a CNC open program. The actual geometry is acquired in some remarkable points and a compensation routine modifies the coordinates of the future punch path. The modification policy has been developed by using an effective FE code. An experimental verification shows the good potentiality of the suggested methodology.

On-Line Measuring System Using Isotope to Gauge Film Thickness

2012 ◽  
Vol 190-191 ◽  
pp. 1021-1028
Author(s):  
Li Zong Lin ◽  
Tao Wang ◽  
Ji Sheng Zhang
Keyword(s):  
Film Thickness ◽  
Pulse Number ◽  
Point Method ◽  
Measuring System ◽  
Error Source ◽  
Line System ◽  
On Line

On-line system was developed to gauge film thickness using isotope, by which the problem of difficulty in measuring wide film thickness was resolved. Two-point method, determining working curve of gauging system, was introduced, by which time spent on experiment could be decreased, and adaptability of working curve under different condition was improved. After analyzing measuring errors, emendation method for every error source was discussed .Method taking count of pulse number within a period of time was applied, by which measuring precision was improved, so this method can be used widely in other applications .This measuring system has obtained satisfying effect in measuring film thickness, and products can be bought in market .

High Speed Noncontact Displacement Measuring System Using FPGA

2010 ◽  
Vol 44-47 ◽  
pp. 724-727
Author(s):  
Xing Guang Li ◽  
Gui Ying Li ◽  
Shuang Zhao
Keyword(s):  
Information Acquisition ◽  
High Speed ◽  
Sampling Rate ◽  
Relative Displacement ◽  
Measuring System ◽  
High Speed Adc ◽  
Line Array ◽  
Other Information ◽  
On Line ◽  
Triangle Theory

According to optical triangle theory, by detecting the position of reflection light spot on line array CCD. The pels signal is transformed into data flow by a high speed ADC for processing with the circuit composed of FPGA. The system can calculate the relative displacement between the reference point and the objects detected. The system has 50MHz sampling rate and USB2.0 bus, so it also can be applied in other information acquisition fields.

scholarly journals Qualification of the Carbon Dioxide Measurement System to Supervise and Improve the Process of Obtaining Breathing Gas for Oxygen Hyperbaric Conditions

2019 ◽  
Vol 69 (4) ◽  
pp. 7-32
Author(s):  
Arkadiusz Woźniak
Keyword(s):  
Carbon Dioxide ◽  
Production Process ◽  
Production Systems ◽  
Gas Production ◽  
Point Of View ◽  
Measuring System ◽  
Critical Parameters ◽  
Carbon Dioxide Content ◽  
Air Supply ◽  
On Line

AbstractMaintaining a stable carbon dioxide content below the established CTQ1 requirements in the process of obtaining breathing gas for hyperbaric oxygen conditions is essential for the safety of underwater work. This article discusses the subject of validation of a selected measuring system for on-line control of the breathing gas production process and describes the application of multidimensional sensory systems to control critical parameters of the production process in production systems intended for intensive use away from supply facilities. In this case, the on-line contamination measurement option should be considered2. Monitoring of the analysed process from the point of view of its ability to minimise its variability should be oriented towards measuring the input or process values in such a way as to prevent the occurrence of potential defects already at the production stage. The assessment of the CCS - Carbon Dioxide Control System3 selected for testing, designed to control the carbon dioxide content, was performed in DUWT PNA4 for the DGKN - 120 complex compressed air supply system5. The system evaluation was conducted using MSA6 procedures and methods of SPC7.

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