Three-Axis Magnetic Field Induction Sensor Realized on Buckled Cantilever Plate

Alfadhel, Ahmed; Carreno, Armando A A; Foulds, Ian G.; Kosel, Jürgen

doi:10.1109/tmag.2012.2237019

Cited by 21 publications

(11 citation statements)

References 13 publications

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“…For a coil composed of N turns, the net voltage, VM , produced will be the summation of the voltage induced in each individual turn. Substituting Equation in (4), the magnitude of the voltage induced in the coil, due to the motion of the composite structure, is given as

V_{M} = 2 π f B_{M} \sum_{i = 1}^{N} A_{i},

where A i is the area enclosed by the i th turn of the coil…”

Section: Resultsmentioning

confidence: 99%

Broadband Magnetic Composite Energy Harvester

2018

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Energy from ambient vibrations is a potential source for powering the multitude of sensing and computing systems that comprise the internet of things. In order to exploit the broadband nature of natural low frequency vibrations, a magnetic composite energy harvester that has a dual resonant response in the sub-100 Hz region is presented by the authors. A unique structure composed of a proof mass mounted on an array of high aspect ratio, bioinspired hair like structures called cilia is fabricated using polydimethylsiloxane (PDMS) À NdFeB magnetic microcomposite. This structure has a frequency response comprised of two closely spaced resonant peaks facilitating the desirable broadband behavior at low frequency. Each cilium is shaped like a conical frustum with a top diameter of 200 μm and a bottom diameter of 450 μm and has a height of 3 mm, while the proof mass is cuboid with dimensions of 12 Â 12 Â 8 mm 3 . This composite structure is fabricated on top of a micromachined 1 cm 2 planar coil, made up of 40 turns of 7.6 μm thick electroplated copper. The effect of material composition of the magnetic composite on the resonant frequencies, bandwidth, and energy harvesting performance of the device is studied.

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V_{M} = 2 π f B_{M} \sum_{i = 1}^{N} A_{i},

where A i is the area enclosed by the i th turn of the coil…”

Section: Resultsmentioning

confidence: 99%

Broadband Magnetic Composite Energy Harvester

2018

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“…Tactile sensors based on the principle of electromagnetic induction essentially utilize Faraday’s law of induction. When the magnetic field in the coil changes, the induction voltage value changes along with the rate of change in magnetic flux [ 132 ]. To generate induced voltage in coils due to the changing magnetic field, two approaches are usually employed.…”

Section: Transduction Mechanismsmentioning

confidence: 99%

Recent Progress in Technologies for Tactile Sensors

Chi

Sun

Xue

et al. 2018

Sensors

199

111

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Over the last two decades, considerable scientific and technological efforts have been devoted to developing tactile sensing based on a variety of transducing mechanisms, with prospective applications in many fields such as human–machine interaction, intelligent robot tactile control and feedback, and tactile sensorized minimally invasive surgery. This paper starts with an introduction of human tactile systems, followed by a presentation of the basic demands of tactile sensors. State-of-the-art tactile sensors are reviewed in terms of their diverse sensing mechanisms, design consideration, and material selection. Subsequently, typical performances of the sensors, along with their advantages and disadvantages, are compared and analyzed. Two major potential applications of tactile sensing systems are discussed in detail. Lastly, we propose prospective research directions and market trends of tactile sensing systems.

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“…Different experimental techniques exist to perform a full magnet characterization. One of the preeminent and most reliable techniques is the rotating or harmonic coil method [12,[14][15][16][17][18]. This method, based on an assembly of induction coils rotating inside the magnet bore, is generally capable of providing field error measurements with a repeatability of a few ppm [19] [20].…”

Section: Introductionmentioning

confidence: 99%

A high-precision miniaturized rotating coil transducer for magnetic measurements

Arpaïa

Buzio

Oliveira

et al. 2018

Sensors and Actuators A: Physical

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A miniaturized Printed Circuit Board (PCB) sensing coil, jointly developed by CERN and Fermilab for measuring the field of small-gap (less than 10 mm) accelerator magnets, is illustrated. A sensing coil array, with a scheme for compensating the main field when measuring the harmonic error components, hosted on a synthetic sapphire-based transducer, is presented. Key innovating features are (i) very-small size, both for the sensing coil array (thickness of 1.380 mm) and for the transducer (overall diameter of 7.350 mm), (ii) metrological performance, namely accuracy (more than five times better than state of the art), and 1-sigma repeatability (ten times better on harmonics with amplitude less than 100 ppm), and (iii) manufacturing technology of both the coil array (13 double layers aligned within 10 m), and the sapphire support (concentricity, the most important uncertainty source for rotating coils, 3 m of uncertainty, namely one order of magnitude better than fiberglass support). After stating the measurement problem, the design of the transducer and a case study of a two-layer PCB sensor array are illustrated. Then, the prototyping and quality control of both the sensor and the transducer are discussed. Furthermore, the calibration and the results obtained with a prototype setup at Fermilab are presented. Finally, in the appendix, the theory of the rotating coil, the sensor geometry, and the harmonic compensation are briefly reviewed for the reader easiness.

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Three-Axis Magnetic Field Induction Sensor Realized on Buckled Cantilever Plate

Cited by 21 publications

References 13 publications

Broadband Magnetic Composite Energy Harvester

Broadband Magnetic Composite Energy Harvester

Recent Progress in Technologies for Tactile Sensors

A high-precision miniaturized rotating coil transducer for magnetic measurements

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