All-fiber rotation speed measurement based on dual-beam speckle interference

2021 ◽  
Vol 60 (14) ◽  
pp. 4064
Author(s):  
Peng Chen ◽  
Tao Huang ◽  
Zhen Huang ◽  
YuTing Dang ◽  
Biao Gao
Keyword(s):  
Rotation Speed ◽  
Speed Measurement ◽  
Dual Beam

A Rotation-Speed Measurement System Based on Magneto-Inductive Effect

2020 ◽  
Vol 18 (4) ◽  
pp. 299-303
Author(s):  
Tao Wang ◽  
Bicong Wang ◽  
Yuyi Chen ◽  
Yufeng Luo
Keyword(s):  
Direct Current ◽  
Measurement System ◽  
Rotational Speed ◽  
Inductive Effect ◽  
Rotation Speed ◽  
Rotating Shaft ◽  
High Rotational Speed ◽  
Sensing System ◽  
Dc Motors ◽  
Speed Measurement

There are few reports on high rotational speed measurement of brushless direct current (DC) motors based on giant magneto-inductive effect. In this study, a rotational speed measurement system based on giant magneto-inductive effect is established for measuring the rotational speeds of DC motors. Successive sawtooth waves are found when rotating shaft is close to the GMI sensor. Through using the magneto-inductive sensing system, different high rotational speeds (1500∼24000 r/min) of the motor are accurately measured. Therefore, this giant magneto-inductive sensor may be used for high rotational speed measurement of motors.

Equal Precision Rotation Speed Measurement System of Vichicle Transmission

2013 ◽  
Vol 765-767 ◽  
pp. 2153-2158
Author(s):  
Hong Tao Li
Keyword(s):  
Measurement System ◽  
Precision Measurement ◽  
Measurement Accuracy ◽  
Rotation Speed ◽  
Measurement Methods ◽  
Control Technology ◽  
Electronic Control ◽  
Power Train ◽  
Speed Measurement ◽  
Wide Range

The rev of vehicle transmission is an important parameter to reflect the performance of the power train, and the measurement accuracy will have an influence on the implement of electronic control technology in transmission system. Based on the analysis of common rev measurement methods, aiming at the feature of wide range of rev during HMCVT test, a method of rev equal precision measurement is been put forward.

scholarly journals A Low-Cost Non-Intrusive Method for In-Field Motor Speed Measurement Based on a Smartphone

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4317
Author(s):  
Paula Paramo-Balsa ◽  
Juan Manuel Roldan-Fernandez ◽  
Manuel Burgos-Payan ◽  
Jesus Manuel Riquelme-Santos
Keyword(s):  
Rotation Speed ◽  
Mechanical Load ◽  
Low Cost ◽  
Frequency Converter ◽  
Frequency Component ◽  
Noise Signal ◽  
Harmonic Spectrum ◽  
Motor Speed ◽  
Motor Noise ◽  
Speed Measurement

Induction motors are broadly used as drivers of a large variety of industrial equipment. A proper measurement of the motor rotation speed is essential to monitor the performance of most industrial drives. As an example, the measurement of rotor speed is a simple and broadly used industrial method to estimate the motor’s efficiency or mechanical load. In this work, a new low-cost non-intrusive method for in-field motor speed measurement, based on the spectral analysis of the motor audible noise, is proposed. The motor noise is acquired using a smartphone and processed by a MATLAB-based routine, which determines the rotation speed by identifying the rotor shaft mechanical frequency from the harmonic spectrum of the noise signal. This work intends to test the hypothesis that the emitted motor noise, like mechanical vibrations, contains a frequency component due to the rotation speed which, to the authors’ knowledge, has thus far been disregarded for the purpose of speed measurement. The experimental results of a variety of tests, from no load to full load, including the use of a frequency converter, found that relative errors on the speed estimation were always lower than 0.151%. These findings proved the versatility, robustness, and accuracy of the proposed method.

Rotation speed measurement based on self-mixing speckle interference

2018 ◽  
Vol 428 ◽  
pp. 110-112 ◽  
Author(s):  
Bingkun Gao ◽  
Chen Qing ◽  
Haoran Li ◽  
Chunlei Jiang ◽  
Peng Chen
Keyword(s):  
Rotation Speed ◽  
Speed Measurement

Rotation speed measurement of moving particles in a CFB riser

Particuology ◽  
2009 ◽  
Vol 7 (4) ◽  
pp. 238-244 ◽  
Author(s):  
Xuecheng Wu ◽  
Qinhui Wang ◽  
Zhongyang Luo ◽  
Mengxiang Fang ◽  
Kefa Cen
Keyword(s):  
Rotation Speed ◽  
Speed Measurement

Classification Research of Rotation Speed Measurement

2013 ◽  
Vol 457-458 ◽  
pp. 998-1003
Author(s):  
Zhe Zheng ◽  
Ren Jie Zhang
Keyword(s):  
Measurement System ◽  
Measurement Method ◽  
Rotation Speed ◽  
High Reliability ◽  
Low Cost ◽  
Industrial Applications ◽  
Systematic Classification ◽  
Actual Measurement ◽  
Advantages And Disadvantages ◽  
Speed Measurement

Instantaneous speed measurement system can accurately measure the rotating target and realize the rotation direction judgment. It plays a very important role in industrial applications, as monitoring or controlling the rotation speed of transmitter, motor, turbine. With the development of technology, a modern speed measurement system is demanded to be intelligent, high integration, high precision, high reliability, and low cost etc. Based on the large number of literatures, this paper is a comprehensive review of the principle and application of domestic and foreign mature technology of rotation speed measurement method at present. Through the systematic classification, relationship between the different speed measurements is revealed, and the advantages and disadvantages of different measuring sensor are presented, so that readers can choose reasonable speed measurement method depending on the application, the actual measurement requirements and the test purposes.

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