scholarly journals Calibration of Displacement Laser Interferometer Systems for Industrial Metrology

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4100 ◽  
Author(s):  
Haitjema
Keyword(s):  
Temperature Sensor ◽  
Machine Tools ◽  
Laser Interferometer ◽  
Metrological Traceability ◽  
Laser Frequency ◽  
Sensor Calibration ◽  
Counting System ◽  
Traceability Link ◽  
Calibration Laboratories ◽  
Material Temperature

Displacement laser interferometer systems are widely used for the calibration of machine tools and CMMs (Coordinate Measuring Machines). Additionally, they are often the workhorse in dimensional calibration laboratories, where they act as the basic metrological traceability link for many calibrations. This paper gives a review of the calibration of such systems, where several approaches, such as the calibrations of separate components or the system as a whole, are reviewed. The calibrations discussed are: the laser frequency, the counting system, software evaluation of the environmental conditions, environmental and material temperature sensor calibration and the calibration of optics that is part of the system. For these calibrations considerations are given about the ways these can be carried out and about establishing the re-calibration intervals.

Placement of the material temperature sensor during measuring the accuracy of CNC machine tools

2013 ◽  
Author(s):  
Dong-sheng Zhao ◽  
Min-qiang Jia ◽  
Jian Zhang ◽  
Lei Sun ◽  
Wei-jun Li
Keyword(s):  
Temperature Sensor ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Material Temperature

Smart Wearable Health Device for Heart Rate and Temperature Measurements

2020 ◽  
Vol 11 (1) ◽  
pp. 17-28
Author(s):  
Esraa Youssef Salem ◽  
Menna Y. Zain ◽  
Mira Alfons
Keyword(s):  
Public Health ◽  
Heart Rate ◽  
Relative Error ◽  
Temperature Sensor ◽  
Sensor Calibration ◽  
Pulse Sensor ◽  
Health Device ◽  
The Right ◽  
Smart Wearable ◽  
The Internet Of Things

Lack of communication can be seen in many aspects, such as public health, and recycling. We found that in public health people suffer from lack of facilities and it may lead to death, but building new hospitals is not the right solution, but improved communication is. To solve both problems with a simple solution, the Internet of Things (IoT) had to be involved. So, we proposed a solution, which is a WHD (wearable health device) that measures temperature and heart rate for the patient and compares them to a database, it consists of Arduino Nano wired to both LM35 temperature sensor and pulse sensor. The readings are displayed on an OLED screen, as well as on a mobile application called ThingView. If the readings are abnormal, an action would be taken either to contact a relative or the ambulance, depending on its severity. It would decrease the trips to hospitals. We have tested for the device's efficiency and sensor calibration, and the results were promising. The competence of the pulse sensor is very high as its relative error is ±0.07. The temperature sensor (LM35) has very low relative error which is ±0.00356. The final cost was computed to be $26.5.

Non-Contact Measuring Modeling and Simulation of CNC Machine Tools under High Feed Rate Condition

2007 ◽  
Vol 10-12 ◽  
pp. 621-625
Author(s):  
X.S. Wang ◽  
Jian Guo Yang
Keyword(s):  
Feed Rate ◽  
Machine Tools ◽  
Laser Interferometer ◽  
Measurement Model ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Rate Condition ◽  
High Feed Rate ◽  
High Feed ◽  
Measurement Principle

This article sets forth a new precision measurement method of CNC machine tools. The method incorporates the laser interferometer and the measurement principle of the double ball bar (DBB), and can measure the machine tool precision under the high feed rate condition. The generalized measurement model of three-axis has been built. Data analysis software is developed to simulate the run condition of machine tools. The repeatable experiment results proves that the method is feasible and its precision is higher than DBB`s.

scholarly journals A Temperature Sensor Clustering Method for Thermal Error Modeling of Heavy Milling Machine Tools

2017 ◽  
Vol 7 (1) ◽  
pp. 82 ◽  
Author(s):  
Fengchun Li ◽  
Tiemin Li ◽  
Haitong Wang ◽  
Yao Jiang
Keyword(s):  
Temperature Sensor ◽  
Machine Tools ◽  
Thermal Error ◽  
Error Modeling ◽  
Milling Machine ◽  
Clustering Method ◽  
Thermal Error Modeling ◽  
Sensor Clustering

Variable Temperature Cryostat for Cryogenic Temperature Sensor Calibration

2012 ◽  
Vol 14 (4) ◽  
pp. 46-49 ◽  
Author(s):  
Myung Su Kim ◽  
Yeon Suk Choi ◽  
Dong Lak Kim
Keyword(s):  
Temperature Sensor ◽  
Cryogenic Temperature ◽  
Variable Temperature ◽  
Sensor Calibration

The Effects of Tuning Controller Gains for Servo Feed Unit Positioning Accuracy

2011 ◽  
Vol 317-319 ◽  
pp. 1974-1978
Author(s):  
Ling Lin Kong ◽  
Duan Neng Li ◽  
Ke Li
Keyword(s):  
Machine Tools ◽  
Laser Interferometer ◽  
Servo System ◽  
Pi Controller ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Positioning Accuracy ◽  
Ac Servo ◽  
And Control ◽  
Feed Unit

Positioning accuracy of servo feed unit makes an important effect to processing precision in CNC machine tools. The effects in positioning accuracy mainly are the precisions of mechanism and servo system. And the actions of tuning controller gains should directly affect the servo system precision. This paper, a servo system model and its P/PI controller has been formulated and simulated, using an AC servo feed unit as a tested. Through tuning gains of P/PI controller, analyses and control the effects for the feed unit positioning accuracy. Ultimately, experiments have been carried out to test feed unit by laser interferometer. Its shows that tuning gains of P/PI controller, which given in paper, has effectively improved the positioning accuracy of servo feed unit.

scholarly journals Microhotplate temperature sensor calibration and BIST

2011 ◽  
Vol 116 (6) ◽  
pp. 827 ◽  
Author(s):  
M. Afridi ◽  
C. Montgomery ◽  
E. Cooper-Balis ◽  
S. Semancik ◽  
K.G. Kreider ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Sensor Calibration

Development of Temperature Sensor Calibration System Using Cryocooler

2013 ◽  
Vol 37 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Myung Su Kim ◽  
Yeon Suk Choi ◽  
Dong Lak Kim
Keyword(s):  
Temperature Sensor ◽  
Sensor Calibration ◽  
Calibration System
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