نتایج جستجو برای: mechanical energy harvester

تعداد نتایج: 881746  

2013
J. Park G. Morgenthal K. Kim S. Kwon Kincho Law

Structural instability caused by self exciting aerodynamic forces (flutter) can be used as an effective input source for small scale energy harvesters. The self exciting aerodynamic force exerted on a T-shape cantilever causes periodic vibration, which can be converted into electric power through an electromagnetic transducer. Due to the complexities inherent in the fluid-structure interaction ...

2012
J. Park S. Kwon K. H. Law

Structural instability caused by self exciting aerodynamic forces (flutter) can be used as an effective input source for small scale energy harvesters. The self exciting aerodynamic force exerted on a T-shape cantilever causes periodic vibration, which can be converted into electric power through an electromagnetic transducer. Due to the complexities inherent in the fluid-structure interaction ...

Afshin Azmoodeh-Mishamandani, Hossein Navid Mohammad Moghaddam Vahed Shamsollah Abdollahpoor

The object of this study was evaluation of a walking tractor drawn peanut harvester at different conditions of soil moisture content and forward speed and comparing it with manual harvesting. The evaluation factors for peanut harvester were two levels of soil moisture content and three levels of forward speed. The results revealed that the effect of soil moisture content was only significant on...

Journal: :Sensors and Actuators A-physical 2022

This paper presents the integration of a novel mechanical torsion spring regulator into pendulum energy harvester system. was designed to provide same voltage-smoothing benefits flywheel without start-up issues caused by increasing system inertia. In addition, introduction between input and output stages device acts as buffer for any sudden impacts, which not only allows from such events be ful...

2014
Tae June Kang Taewoo Kim Eui Yun Jang Hyeongwook Im Xavier Lepro-Chavez Raquel Ovalle-Robles Jiyoung Oh Mikhail E. Kozlov Ray H. Baughman Hong H. Lee Yong Hyup Kim

Electromagnetic induction (EMI) is a mechanism of classical physics that can be utilized to convert mechanical energy to electrical energy or electrical to mechanical energy. This mechanism has not been exploited fully because of lack of a material with a sufficiently low force constant. We here show that carbon nanotube (CNT) aerogel sheets can exploit EMI to provide mechanical actuation at ve...

2017
Sacha Vignieri Jesse Smith

Making the most of twists and turns The rise of small-scale, portable electronics and wearable devices has boosted the desire for ways to harvest energy from mechanical motion. Such approaches could be used to provide batteryfree power with a small footprint. Kim et al. present an energy harvester made from carbon nanotube yarn that converts mechanical energy into electrical energy from both to...

2016
E E Aktakka K Najafi

This paper reports a microfabricated piezoelectric MEMS inertial energy harvester that can scavenge high-frequency mechanical vibrations in all three dimensions with an active inner volume of only 55 mm. The device can generate 0.1 to 10.5 μW from out-of-plane vibrations (365-465 Hz), and 0.1 to 3.2 μW from in-plane vibrations (680-930 Hz) at 0.5 g acceleration input. The reported harvester is ...

Journal: :journal of computational applied mechanics 0
rouhollah hosseini islamic azad university, south tehran branch maryam nouri young researchers and elite club

the most promising method for micro scale energy scavenging is via vibration energy harvesting which converts mechanical energy to electrical energy by the effect of coupling between electric fields and mechanical variables. using piezoelectric cantilevers is the most common method for vibration energy harvesting. changing the shape of the cantilevers can lead to changing the generated output v...

M Hamedi, R Hosseini

Power supply is a bottle-neck problem of wireless micro-sensors, especially where the replacement of batteries is impossible or inconvenient. Now piezoelectric material is being used to harvest vibration energy for self-powered sensors. However, the geometry of a piezoelectric cantilever beam will greatly affect its vibration energy harvesting ability. This paper deduces a remarkably precise an...

Journal: :Micromachines 2015
Shih-Wen Peng Po-Jen Shih Ching-Liang Dai

The fabrication and characterization of a thermoelectric energy harvester using the complementary metal oxide semiconductor (CMOS)-microelectromechanical system (MEMS) technology were presented. The thermoelectric energy harvester is composed of eight circular energy harvesting cells, and each cell consists of 25 thermocouples in series. The thermocouples are made of p-type and n-type polysilic...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید