Topic
Inductive sensor
About: Inductive sensor is a research topic. Over the lifetime, 2282 publications have been published within this topic receiving 21984 citations.
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01 Jan 2006
TL;DR: In this paper, a new method is forwarded to detect the rotor position for linear synchronous motor in high speed maglev train based on inductive sensor and DSP, and the measurement accuracy is less than 3° of the winding pitch of the long stator and can meet the requirement of the operating control system of high speed MAGNET.
Abstract: It is necessary to detect rotor position accurately for field oriented control system of synchronous motor.A new method is forwarded to detect the rotor position for linear synchronous motor in high speed maglev train based on inductive sensor and DSP.The hardware of the inductive sensor,the teeth-slot signals detection principle of long stator,and signals processed with DSP are elucidated.Measurement accuracy and tolerances are analyzed,and several improvements are also presented.In the speed and positioning experiment system of high speed maglev train,the measurement accuracy is less than 3° of the winding pitch of the long stator and can meet the requirement of the operating control system of high-speed maglev train.
7 citations
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09 Sep 2004
TL;DR: In this paper, the authors describe an inductive sensor of alternate current for use in an electronic currentmeter, which consists of two coils (1, 2) containing each two windings, one winding for current measurement and another serving as a static armour of the first winding, whereby both coils are positioned on a printed circuit board.
Abstract: An inductive sensor of alternate current, preferably for use in an electronic current
meter basically consists of two coils (1,2) containing each two windings, one winding
for current measurement and another serving as a static armour of the first winding,
whereby both coils (1,2) are positioned on a printed circuit board (3) that can be
independent or part of a printed circuit board of a large electronic assembly and
function as a secondary winding of the sensor. The sensor of the invention is
characterized in that a primary winding (4) is of such shape that its free ends are
adapted to various types of connectors (DIN, BS, ANSI) of electronic electricity
meters, whereas the central part of the primary winding is shaped in a way that it at
least partially embraces both coils (1,2) in a relatively small distance or runs between
them.
7 citations
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31 Aug 2006
TL;DR: In this article, the phase shift and amplitude change of a vibration wave caused by metal proximity was measured accurately by a simple circuit structure, consisting of a capacitor C connected wit a detection coil L, which outputs a drive signal to the resonating circuit, and which measures a phase shift based on a free vibration wave output in a dampening manner after the signal output of the drive signal stops.
Abstract: A proximity sensor such as a proximity switch, a displacement sensor, a distance sensor, a material sensor, a coin sensor, a metal sphere sensor for detecting the proximity of metal, with which to measure the phase shift and the amplitude change of a vibration wave caused by metal proximity accurately by a simple circuit structure. A proximity sensor (1) for detecting the proximity of metal, which is provided with a resonating circuit (2) consisting of a capacitor C connected wit a detection coil L, which outputs a drive signal to the resonating circuit (2), and which measures a phase shift and an amplitude change caused by metal proximity based on a free vibration wave output in a dampening manner from the resonating circuit (2) after the signal output of the drive signal stops.
7 citations
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16 Oct 2011TL;DR: In this paper, a tamper-proof magnetic alarming unit can detect its location and can trigger an alarm if it is moved or if a door is breached, which can be used for securing and monitoring cargo containers.
Abstract: This invention describes an apparatus for securing and monitoring cargo containers. In particular, the present invention discloses the use of a combination of hall effect sensors, permanent magnets, optic sensors, and inductive sensors attached to a surface. This tamper-proof magnetic alarming unit can detect its location and can trigger an alarm if it is moved or if a door is breached.
7 citations
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01 Jan 2016-Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
TL;DR: In this paper, the effectiveness of spectrometric oil analysis in a fine filtered system and compare it with the results from an inductive wear debris sensor was evaluated using a combination of experimental data and aircraft data.
Abstract: Spectrometric oil analysis has been a popular technique used by oil analysis laboratories to determine the concentration of elements in an oil sample. The primary application of this technique has been the identification of fine wear in lubricated systems as an indicator of abnormal wear in order to prevent failure. It has also found some use for monitoring contaminants and fluid additives. While the literature has varying accounts of the effectiveness of this technique for machinery condition monitoring purposes, the introduction of fine filtration to many modern machines has profound implications for the effectiveness of spectrometric oil analysis. This paper will assess the effectiveness of spectrometric oil analysis in a fine filtered system and compare it with the results from an inductive wear debris sensor. The inductive wear debris sensor is a relatively new sensor for detecting abnormal wear in recirculating lubrication systems. A combination of experimental data and aircraft data is presented.
7 citations