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We have proposed an electromagnetic vibration energy harvester to generate power from low frequency input vibration such as human body induced motion using a springless permanent magnet and ferrofluid as a lubricant A proof of concept vibration energy harvester has been designed fabricated and tested.
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This paper presents an electromagnetic vibration energy harvester using linear motion of springless proof mass An array of rectangular magnets oscillates laterally without conventional spring support under the external vibration providing a time varying magnetic field.
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Electromagnetic radiation interacts with matter in different ways in different parts of the spectrum The types of interaction can range from electronic excitation to molecular vibration depending on the different types of radiation such as ultraviolet X rays microwaves and infrared radiation.
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Vibration mitigation of stay cables using electromagnetic inertial mass dampers Full scale experiment and analysis Article PDF Available in Engineering Structures 2002019109693 183 December.
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The main emphasis however is on the oscillatory aspects of the electromagnetic fieldthat is on the vibrations waves radiation and the interaction of electromagnetic waves with matter The content is designed primarily for the use of second or third year students of physics who have had a semester of mechanics and a semester of.
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Vibration Control of Seismic Structures Using Electromagnetic Multiple Tuned Mass Dampers with Rotary Transducers Ta Chih Hung11 Ging Long Lin2 Chi Chang Lin23 Yilun Liu34 and Lei Zuo5 1 2 3 Department of Civil Engineering National Chung Hsing University Taichung 40227 Taiwan.
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QuotThe idea is that the time that the pulse is on is about a quarter of a period of a vibration quot Sankey said quotLike pushing a child on a swing from rest one impulsive push gets the virus shaking.
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The vibration absorbers are frequently used to control and minimize excess vibration in structural system Dynamic vibration absorbers are used to reduce the undesirable vibration in many applications such as pumps gas turbines engine bridge and electrical generator To reduce the vibration of the system the frequency of absorber should be equal to the excitation frequency.
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Vibration energy harvesting is receiving a considerable amount of interest as a means for powering wireless sensor nodes This paper presents a small component volume 0 1 cm 3 practical volume 0 15 cm electromagnetic generator utilizing discrete components and optimized for a low ambient vibration level based upon real application data.
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Using Electromagnetic Vibration and Wheel Hiroyuki Yaguchi Izuru Kimura and Shun Sakuma Faculty of Engineering Tohoku Gakuin University Tagajo 985 8537 Japan.
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Electromagnetic vibration energy harvesters have been widely used to convert the vibration energy into electricity However one of the main challenges of using electromagnetic vibration energy harvesters is that they are usually in very large size with low power density.
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Vibration Control System Using Electromagnetic Forces Yuji Matsuzaki Daisuke Ishikubo Toru Kamita and Tadashige Ikeda Journal of Intelligent Material Systems and Structures 2016 8 9 751 756.
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In this paper a multi directional electromagnetic vibration energy harvester EVEH using the circular Halbach array HA is presented based on the Faradays law of electromagnetic induction The circular HA is a specific arrangement of permanent magnets which could concentrate the magnetic field inside the circular array by a certain rule while reduce the magnetic field outside the.
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Introduction Noise and vibrations of electrical machines include electromagnetically excited sources aerodynamic sources and mechanical sources This article reviews electromagnetic noise and vibration sources in electric machines also called e NVH in automotive applications hybridelectric vehicles Explanation of electromagnetically excited noise in electric machines.
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Abstract This paper reports an electromagnetic vibration energy harvester using an improved Halbach array A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field on the other side to almost zero Previous research showed that although the.
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Mathematical vibration modeling is used to calculate the magnetic force and a finite element analysis using the commercial electromagnetic analysis software MAXWELL is performed to determine the.
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Generating electromagnetic forces Furthermore because the magnetic force is generated electrically this method has minimal delay in response for high frequency ranges of vibration in comparison to conventional methods using hydraulic or pneumatic systems Suzuki 5 Full scale vehicle running tests.
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An electromagnetic analysis is performed on the electric motor and the vibration loads from this analysis are used in the structural analysis This process is used for optimization of magnetic torque and to reduce the noise radiated by the motor.
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The essential component of the EVA is an electromagnetic transducer interfacing between electrical and mechanical domains connected to an external electrical circuit So far the use of electromagnetic devices in vibrationcontrol applications has been driven by energyharvesting applications.
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Using high performance bulk magnets and multiturn coils 14 In the last decade interest has grown in employing electromagnetic devices for structural vibration control Early works focused in the possibility of using electromagnetic dampers 18 The idea was to substitute the damper on a TMD for a electromagnetic device capable of energy dis.
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This paper reports an electromagnetic vibration energy harvester using an improved Halbach array A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the array while cancelling the field on the other side to almost zero Previous research showed that although the Halbach array has higher magnetic field density compared to normal.
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Jun 01 2020018332A dynamic vibration absorber using viscoelastic material was proposed and tested for the vibration suppression in a rotational machine system Liu et al proposed the semi active dynamic vibration absorber with the magnetorheological elastomer 18 in a propulsion system and electromagnetic and thermodynamic simulations were carried out to.
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Namic vibration sys tem down into its dis crete components we are quite simply left with something anal ogous to a stereo sys tem a big and pow erful industrial strength stereo sys tem Using a vibration control system synonymous with the CD player a signal is sent through an amplifier similar to the amplifier used for a home stereo.
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Vibration Energy Harvesting is the concept of converting vibration energy to electrical energy It basically is as simple as it sounds This is possible through different technologies e g electromagnetic induction used by ReVibe Energy or Piezoelectric fibres.
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In principle the electromagnetic vibration exciter oper ates like a loudspeaker where the movement is pro duced by a current passing through a coli in a magnetic field The force used to accelerate the moving element is proportional to the drive current and the magnetic flux.
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