Shape optimization of the active element for vibration energy harvesting

Abstract

As the use of renewable energy is increasing exponentially all around the world, the micro energy sources are no different. One of renewable micro energy generator is transducer which can make electricity from the relative displacement present within the system or the mechanical strain. A technique was created to maximize the collection of the electricity generated from a piezoelectric fiber, based on modes of transversal vibration. Created the numerical and computational models of the dynamic element's shape advancement issue. Normal strain top generation was expanded by 49%. The energy rise was 16%. The exploratory stands and strategies were created for the test confirmation of the depicted numerical modeling results. Comes about gotten from the try utilizing the holography method were compared to hypothetically gotten eigen frequencies and mode shapes, and the mistake does not surpass 3%.

A Battery-free Pressure Sensing System Based on Soft Piezoelectric Device for Tennis Training

“…As the traditional piezoelectric sensing system, this kind of array design can obtain the variant pressure in the different positions. Nevertheless, because the net of the tennis racket is soft and has some deformation as the ball hits it, the traditional hard piezoelectric device will be damaged in this procedure [16]. Two special design is used to optimize this problem.…”