Academic literature on the topic 'Rotational speed measurement'

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Journal articles on the topic "Rotational speed measurement"

1

Wang, Tao, Bicong Wang, Yuyi Chen, and Yufeng Luo. "A Rotation-Speed Measurement System Based on Magneto-Inductive Effect." Sensor Letters 18, no. 4 (2020): 299–303. http://dx.doi.org/10.1166/sl.2020.4219.

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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 rotation
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2

Li, Lin, Hongli Hu, Yong Qin, and Kaihao Tang. "Digital Approach to Rotational Speed Measurement Using an Electrostatic Sensor." Sensors 19, no. 11 (2019): 2540. http://dx.doi.org/10.3390/s19112540.

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In industrial production processes, rotational speed is a key parameter for equipment condition monitoring and fault diagnosis. To achieve rotational speed measurement of rotational equipment under a condition of high temperature and heavy dust, this article proposes a digital approach using an electrostatic sensor. The proposed method utilizes a strip of a predetermined material stuck on the rotational shaft which will accumulate a charge because of the relative motion with the air. Then an electrostatic sensor mounted near the strip is employed to obtain the fluctuating signal related to the
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3

Liu, Yang, Jigou Liu, and Ralph Kennel. "Rotational speed measurement using self-mixing interferometry." Applied Optics 60, no. 17 (2021): 5074. http://dx.doi.org/10.1364/ao.420376.

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4

Harun, Suryadiwansa, Toshiro Shibasaka, and Toshimichi Moriwaki. "Cutting Temperature Measurement in Turning with Actively Driven Rotary Tool." Key Engineering Materials 389-390 (September 2008): 138–43. http://dx.doi.org/10.4028/www.scientific.net/kem.389-390.138.

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In this paper, turning with actively driven rotary tool was investigated. The influence of machining conditions such as tool rotational speed and inclination angle on the cutting edge temperature is examined experimentally. The temperature was measured by a thermocouple of constantan wire and work material. Experimental results show that the cutting temperature decreases with increasing tool rotational speed to a minimum value at a certain tool rotational speed and then increase. Next, the minimum temperature recorded by tool rotation was approximately 150oC lower than that the cutting with a
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5

Lu, Feng, Hong Bo Shen, Xiao Fei Zhang, Li Xiu Zhang, Yu Hou Wu, and Ke Zhang. "Analysis of Spindle Rotary Precision Based on Two-Point Methods." Applied Mechanics and Materials 624 (August 2014): 327–31. http://dx.doi.org/10.4028/www.scientific.net/amm.624.327.

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Two-point method designed of the test system for application, the precision of the motorized spindle rotation was dynamic measurements. The system consists of standard bars, high-precision non-contact eddy current sensor. Analyzed by a mathematical model to establish error separation, measurement of two spindle rotation accuracy. The use of two isolated error method for processing the experimental data obtained spindle rotation accuracy at different speeds. Studies have shown that when the spindle speed of 10,000 rpm rotational error is small and tends to be more stable. Identify the factors t
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6

Wasilewski, Jacek, Joanna Szyszlak-Bargłowicz, Grzegorz Zając, and Małgorzata Szczepanik. "Assessment of Co2 Emission by Tractor Engine at Varied Control Settings of Fuel Unit." Agricultural Engineering 24, no. 4 (2020): 105–15. http://dx.doi.org/10.1515/agriceng-2020-0040.

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Abstract The paper presents results of experimental studies concerning CO2 emission of S-4003 diesel engine Ursus C-360 at a variable fuel injection advance angle and opening pressure of injectors. Measurements were made on the dynamometric stand on the test bench. The engine operated according to the load characteristic at two characteristic rotational speeds i.e., at the maximum torque velocity (1600 rpm) and at the rated speed (2200 rpm). In each measurement point of load characteristics, CO2 concentration was measured in exhaust gases with the use of exhaust gases analyser M-488 Multigas P
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7

Lus, Tomasz, Marek Łutowicz, and Dominika Cuper. "APPLICABILITY STUDY OF THE FIBER-OPTIC GYRO IN PISTON ENGINES DIAGNOSING PROCESS." Agricultural Engineering 46, no. 1 (2014): 40–50. http://dx.doi.org/10.15544/ageng.2014.004.

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The Polish Naval Academy has been involved in marine reciprocating combustion engines indication tests for many years. Results of researches aiming to diagnostic using of measurement of engine crankshaft unsteady angular speed are presented in the paper. Up to now, adequate accuracy of angular speed measurement had not been achieved to make proper diagnostic decision. Commercially, measurement of unsteady rotation speed has been used only in MAPEX –TV system (Torsional Vibration detector) dedicated to SULZER engines, which can detect only the one engine cylinder switch out of work without any
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8

Novotná, P., A. Landfeld, K. Kýhos, M. Houška, and J. Strohalm. "Use of helical ribbon mixer for measurement of rheological properties of fruit pulps." Czech Journal of Food Sciences 19, No. 4 (2013): 148–53. http://dx.doi.org/10.17221/6599-cjfs.

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Fruit pulps contain fine particles of the flesh of the original fruit that are suspended in the fruit juice. This suspension has a tendency to settling or separation during measurements of its rheological properties in the rotational rheometer with coaxial cylinders (especially if the greater gap is used). In this case the use of a mixer is convenient. The mixer can serve as a tool for measurement of rheological properties and at the same time it can prevent the settling and it is not sensitive to the occurrence of greater particles in the measured fluid. The helical ribbon mixer was used in t
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9

Natili, Francesco, Francesco Castellani, Davide Astolfi, and Matteo Becchetti. "Video-Tachometer Methodology for Wind Turbine Rotor Speed Measurement." Sensors 20, no. 24 (2020): 7314. http://dx.doi.org/10.3390/s20247314.

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The measurement of the rotational speed of rotating machinery is typically performed based on mechanical adherence; for example, in encoders. Nevertheless, it can be of interest in various types of applications to develop contactless vision-based methodologies to measure the speed of rotating machinery. In particular, contactless rotor speed measurement methods have several potential applications for wind turbine technology, in the context of non-intrusive condition monitoring approaches. The present study is devoted exactly to this problem: a ground level video-tachometer measurement techniqu
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10

Yu, Gui Yin, and Lu Zhang. "Design of New Automobile Rotational Speed Measuring Device." Advanced Materials Research 383-390 (November 2011): 325–28. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.325.

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The automobile rotational speed measurement device, consisting of information collecting and processing, phase-locked loops, wave shaping, frequency division and display, can be applied for measurement of the rotational speed of automobiles with various cylinders.
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