High-precision test system for determining magnetic characteristics of magnetic materials

1977 ◽  
Vol 20 (11) ◽  
pp. 1666-1666
Keyword(s):  
Magnetic Materials ◽  
High Precision ◽  
Test System ◽  
Magnetic Characteristics ◽  
Precision Test

Research on High Precision Testing System for Roller Gear Cam Indexing Driven

2012 ◽  
Vol 542-543 ◽  
pp. 667-670 ◽  
Author(s):  
Wei He
Keyword(s):  
High Precision ◽  
Test System ◽  
Computer Application ◽  
Testing System ◽  
Photoelectric Conversion ◽  
Movement Parameter ◽  
Software And Hardware ◽  
Precision Testing ◽  
Precision Test ◽  
Conversion Technology

This paper has adopted photoelectric conversion technology and computer application tech-nology , together with the Microsoft Visual C++6.0 software, developed a test system that consists of software and hardware, which involved the precision test and movement parameter calculating of the roller gear cam indexing driven. Experiments proved that the reliability and testing precision of this system are preferable.

Precision test system for radiation pulse-length monitors

1977 ◽  
Vol 20 (3) ◽  
pp. 391-394
Author(s):  
N. V. Anikeeva ◽  
A. I. Batygina ◽  
T. K. Egorova ◽  
G. V. Kolesov ◽  
V. G. Novikov ◽  
...  
Keyword(s):  
Pulse Length ◽  
Test System ◽  
Radiation Pulse ◽  
Precision Test

scholarly journals Developing a reference material set for the magnetic properties of NdFeB alloy-based hard magnetic materials

2019 ◽  
Vol 15 (1) ◽  
pp. 21-27
Author(s):  
E. A. Volegova ◽  
T. I. Maslova ◽  
V. O. Vas’kovskiy ◽  
A. S. Volegov
Keyword(s):  
Magnetic Properties ◽  
Magnetic Materials ◽  
Permanent Magnets ◽  
Magnetic Loss ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Magnetic Hysteresis Loop ◽  
Magnetic Characteristics ◽  
Hard Magnetic Materials ◽  
Certified Values

Introduction The introduction indicates the need for the use of permanent magnets in various technology fields. The necessity of measuring the limit magnetic hysteresis loop for the correct calculation of magnetic system parameters is considered. The main sources of error when measuring boundary hysteresis loops are given. The practical impossibility of verifying blocks of magnetic measuring systems element-by-element is noted. This paper is devoted to the development of reference materials (RMs) for the magnetic properties of hard magnetic materials based on Nd2Fe14B, a highly anisotropic intermetallic compound.Materials and measuring methods Nd-Fe-B permanent magnets were selected as the material for developing the RMs. RM certified values were established using a CYCLE‑3 apparatus included in the GET 198‑2017 State Primary Measurement Standard for units of magnetic loss power, magnetic induction of constant magnetic field in a range from 0.1 to 2.5 T and magnetic flux in a range from 1·10–5 to 3·10–2 Wb.Results and its discussion Based on the experimentally obtained boundary hysteresis loops, the magnetic characteristics were evaluated, the interval of permitted certified values was set, the measurement result uncertainty of certified values was estimated, the RM validity period was established and the first RM batch was released.Conclusion On the basis of conducted studies, the RM type for magnetic properties of NdFeB alloy-based hard magnetic materials was approved (MS NdFeB set). The developed RM set was registered under the numbers GSO 11059–2018 / GSO 11062–2018 in the State RM Register of the Russian Federation.

High-precision test installation for measuring attenuations at 0.01?100 MHz

1979 ◽  
Vol 22 (10) ◽  
pp. 1259-1261
Author(s):  
V. I. Aderikhin ◽  
V. P. Bekkerov
Keyword(s):  
High Precision ◽  
Test Installation ◽  
Precision Test

Research on the System of Supercapacitor Parameters Measurement Based on High and Constant Current Control

2012 ◽  
Vol 241-244 ◽  
pp. 423-428
Author(s):  
Xing Hua Li ◽  
Yuan Peng Li ◽  
Mao Hu Zou
Keyword(s):  
High Precision ◽  
Test System ◽  
Current Control ◽  
Constant Current ◽  
Capacitance Measurement ◽  
High Precision Measurement ◽  
Super Capacitor ◽  
Compensation Methods ◽  
Constant Current Charging ◽  
Parameters Measurement

High and constant current charging and discharging is necessary to improve the precision of supercapacitor parameters measurment. In this paper, three topics are discussed for high-precision measurment of supercapacitor parameters. Firstly, the analysis of the principle of capacitance measurement was described. Secondly, a model of high and constant current control was presented. The model used in the system of supercapacitor parameters measurement was in order to ensure the constant-current accuracy. Finally, several software compensation methods were used to improve accuracy. And then, the experiment results between our system and the American Arbin Instrument Company’s Super Capacitor Test System were compared. The system designed by us shows good performance of high precision measurement.

Design and Realization of a Certain Missile Servo Mechanism Test System

2012 ◽  
Vol 466-467 ◽  
pp. 1020-1024
Author(s):  
Dong Yu Zhang ◽  
Xu De Cheng ◽  
Bing Xu ◽  
Xue Dong Xue ◽  
Cheng Peng Jiang
Keyword(s):  
High Precision ◽  
Virtual Instrument ◽  
High Reliability ◽  
Test System ◽  
Automatic Test ◽  
Automatic Test System ◽  
Object A ◽  
Simple Operation ◽  
Servo Mechanism ◽  
Test Result

To improve the efficiency and precision of missile servo mechanism testing, as the research object, a certain missile servo mechanism was studied in this paper. Based on PC/104 bus and virtual instrument technique, a missile servo mechanism automatic test system was presented, and the design and development on hardware and software of the system was described in detail. The system, which is featured with its simple operation, high precision, high reliability, scalable and portable test software, has been proved to be feasible by the test result.

High-precision test installation for reproducing a unit of length in the long-distance range

1981 ◽  
Vol 24 (2) ◽  
pp. 99-101
Author(s):  
M. Andrusenko ◽  
V. P. Danil'chenko ◽  
V. S. Kupko ◽  
S. M. Kochin ◽  
I. V. Lukin ◽  
...  
Keyword(s):  
High Precision ◽  
Long Distance ◽  
Test Installation ◽  
Distance Range ◽  
Unit Of Length ◽  
Precision Test
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