scholarly journals Performance Analysis of a Magnetorheological Damper with Energy Harvesting Ability

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Guoliang Hu ◽  
Yun Lu ◽  
Shuaishuai Sun ◽  
Weihua Li
Keyword(s):  
Energy Harvesting ◽  
Magnetic Flux ◽  
Mr Damper ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Magnetorheological Damper ◽  
Finite Element Models ◽  
Ansys Software ◽  
External Excitation ◽  
Power Generator

A magnetorheological (MR) damper with energy harvesting ability was proposed based on electromagnetic induction (EMI) principle. The energy harvesting part was composed of a permanent magnet array and inducing coils which move vertically. This device could act as a linear power generator when the external excitation was applied, and the kinetic energy could be converted into electrical energy due to the relative linear motion between the magnets array and the inducing coils. Finite element models of both the MR damper part and the linear power generator part were built up separately to address the magnetic flux distributions, the magnetic flux densities, and the power generating efficiency using ANSYS software. The experimental tests were carried out to evaluate the damping performance and power generating efficiency. The results show that the proposed MR damper can produce approximately 750 N damping forces at the current of 0.6 A, and the energy harvesting device can generate about 1.0 V DC voltage at 0.06 m·s−1excitation.

scholarly journals Development and Performance Analysis of a New Self-Powered Magnetorheological Damper with Energy-Harvesting Capability

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6166
Author(s):  
Lingbo Li ◽  
Guoliang Hu ◽  
Lifan Yu ◽  
Haonan Qi
Keyword(s):  
Energy Harvesting ◽  
Mechanical Energy ◽  
Mr Damper ◽  
Electrical Energy ◽  
Magnetorheological Damper ◽  
Linkage Mechanism ◽  
Damping Force ◽  
Application Range ◽  
Excitation Coil ◽  
Self Powered

Magnetorheological (MR) dampers, used as intelligent semi-active vibration control devices to achieve low energy consumption, fast response, controllability, and other capabilities are generally installed with a variety of sensors on their exterior to ensure that the damping force can be accurately controlled. However, external sensors are often affected by external complications that reduce the reliability of the damper, and the cost of powering the damper coils in remote locations where power is not available can be significantly increased. Based on these problems, a new self-powered MR damper scheme is proposed. The proposed MR damper has both energy-harvesting capabilities and damping controllability, and greatly improves the stability and application range of the device by converting vibration energy into electrical energy to supply the excitation coil. The MR damper can drive the piston rod in a linear reciprocating motion by external excitation, which converts mechanical energy into electrical energy via a DC brushless three-phase generator after conversion by a double-linkage mechanism. At the same time, the electrical energy generated by the generator is passed into the excitation coil to change the output damping force of the damper. Meanwhile, the damping performance and energy-harvesting efficiency of the new self-powered MR damper is experimentally tested. Experimental results show the damping force of the device reaches 1040 N when the applied current is 0.6 A. The proposed self-powered MR damper has an instantaneous voltage amplitude of 1.782 V and a peak phase power of 4.428 W when the input excitation amplitude is 12.5 mm and the frequency is 3 Hz.

scholarly journals Design and Multiobjective Optimization of Magnetorheological Damper considering the Consistency of Magnetic Flux Density

2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Zhizhen Dong ◽  
Zhimin Feng ◽  
Yuehua Chen ◽  
Kefan Yu ◽  
Gang Zhang
Keyword(s):  
Magnetic Flux ◽  
Multiobjective Optimization ◽  
Flux Density ◽  
Optimization Design ◽  
Dynamic Range ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Magnetic Flux Density ◽  
Damping Force ◽  
Mr Dampers

The consistency of magnetic flux density of damping gap (CMDG) represents the balancing magnetic flux density in each damping gap of magnetorheological (MR) dampers. It can make influences on the performances of MR dampers and the accuracy of relevant objective functions. In order to improve the mechanical performances of the MR damper with a two-stage coil, the function for calculating CMDG needs to be found. By establishing an equivalent magnetic circuit model of the MR damper, the CMDG function is derived. Then, the multiobjective optimization function and the working flow of optimal design are presented by combining the parallel-plate model of the MR damper with the function posed before. Taking the damping force, the dynamic range, the response time, and the CMDG as the optimization objective, and the external geometric dimensions of the SG-MRD60 damper as the bound variable, this paper optimizes the internal geometric dimensions of MR damper by using a NSGA-III algorithm on the PlatEMO platform. The results show that the obtained scheme in Pareto-optimal solutions has existed with better performance than that of SG-MRD60 scheme. According to the results of the finite element analysis, the multiobjective optimization design including the CMDG function can improve the uniformity of magnetic flux density of the MR damper in damping gap, which meets the requirements of manufacture and application.

Magnetorheological damper behaviour in accordance with flow mode

2018 ◽  
Vol 84 (2) ◽  
pp. 21101
Author(s):  
Joanes Berasategui ◽  
Ainara Gomez ◽  
Manex Martinez-Agirre ◽  
Maria Jesus Elejabarrieta ◽  
M. Mounir Bou-Ali
Keyword(s):  
Rheological Behaviour ◽  
Mr Damper ◽  
Experimental Tests ◽  
Magnetorheological Damper ◽  
Flow Mode ◽  
Main Design ◽  
Mr Dampers ◽  
Significant Parameter ◽  
Optimal Flow ◽  
Theoretical Results

The objective of this article is to determine the optimal flow mode in an MR damper to maximize its performance. Flow mode is one of the main design issues in an MR damper, as it determines the velocity profile and the pressure drop across the gap. In this research, two MR dampers were designed and manufactured with two flow modes: valve and mixed. The response of these two dampers was compared experimentally. Additionally, the experimental tests were correlated by theoretical results that were obtained considering the rheological behaviour of the MR fluid, the shear stress distribution in the gap, and the damper movement. Interestingly, the obtained results suggest that flow mode is not a significant parameter for determining the behaviour of a MR damper.

scholarly journals Laboratory Testing of Velocity Sensing in a Magnetorheological Damper with Power Generation

2017 ◽  
Vol 11 (3) ◽  
pp. 186-189 ◽  
Author(s):  
Bogdan Sapiński
Keyword(s):  
Power Generation ◽  
Laboratory Testing ◽  
Real Life ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Experimental Examination ◽  
Power Generator ◽  
Electromagnetic Power ◽  
Key Issues ◽  
Main Components

Abstract The study summarises the results of experimental examination of velocity sensing capability in a prototype of a magnetorheological damper with power generation (MRD). The device has two main components: an electromagnetic power generator and an MR damper. The study outlines the structure of the device with the main focus on the generator part, and provides results of tests performed under the idle run. The discussion of demonstrates the potentials of MRD action as a velocity-sign sensor and presents key issues which need to be addressed to enable its real life applications.

Experimental Tests of an Electromechanical Transducer of Reverse Linear Motion into Electrical Energy

2013 ◽  
Vol 208 ◽  
pp. 86-92 ◽  
Author(s):  
Marcin Węgrzynowski ◽  
Mateusz Romaszko
Keyword(s):  
Electromotive Force ◽  
Laboratory Tests ◽  
Mr Damper ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Current Strength ◽  
Numerical Calculations ◽  
Linear Motion ◽  
Instantaneous Power ◽  
Electromechanical Transducer

This document deals with the results of laboratory tests of an experimental electromechanical transducer for supplying an magnetorheological (MR) damper. The aim of the tests was to determine: the electromotive force induced in the sectionalized coil, the voltage and the current strength in the control coil of the damper as well as instantaneous power. The results provided are based on the tests of the transducer under periodic kinematic excitations and are compared with those achieved in numerical calculations.

Power Harvesting Through Magnetostrictive Devices: A Linear Model

2010 ◽  
Author(s):  
Francesco Braghin ◽  
Simone Cinquemani ◽  
Ferruccio Resta
Keyword(s):  
Energy Harvesting ◽  
Electrical Power ◽  
Mechanical Vibration ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Uniaxial Stress ◽  
Coupling Model ◽  
Magnetostrictive Material ◽  
Magnetostrictive Devices ◽  
Villari Effect

Energy harvesting, sometimes referred to as “power scavenging” or “energy extraction”, can be defined as “converting ambient energies such as vibration, temperature, light, RF energy, etc. to usable electrical energy by using energy conversion materials or structures, and subsequent storage of the electrical energy for powering electric devices”. There has been a significant increase in the research on vibration-based energy harvesting in recent years. In this contest magnetostrictive devices are considered a promising technology. The Villari effect, also known as the inverse magnetomechanical effect, is the change in magnetization that a magnetostrictive material undergoes when subjected to an applied uniaxial stress. This effect pertains to the transduction of energy from the elastic to the magnetic state and is inverse of Joule magnetostriction. Furthermore, the Villari effect exhibits many of the attributes of the direct magnetostrictive effect since its physical origin lies in magnetoelastic coupling. Transducers utilizing the Villari effect consist of a coil wound on a core of magnetostrictive material. In this paper, a linear magnetomechanical coupling model is developed to analytically calculate the potential electrical power such transducers can generate when subjected to applied harmonic mechanical vibration. Theoretical results are confirmed by experimental tests on two different magnetostrictive devices.

scholarly journals Modelling and performance evaluation of energy harvesting linear magnetorheological (MR) damper

2017 ◽  
Vol 36 (2) ◽  
pp. 177-192 ◽  
Author(s):  
Raju Ahamed ◽  
MM Rashid ◽  
MM Ferdaus ◽  
Hazlina B Yusuf
Keyword(s):  
Energy Harvesting ◽  
Output Voltage ◽  
Testing Machine ◽  
Mr Damper ◽  
Magnetorheological Damper ◽  
Comsol Multiphysics ◽  
Damping Force ◽  
Universal Testing ◽  
Magnetorheological Damping ◽  
And Performance

In this study, an magnetorheological (MR) damper has been designed based on its energy harvesting capability which combines the key benefits of energy generation (reusing lost energy) and magnetorheological damping (controllable damping force). The energy harvesting part has a magnet and coil arrangement to generate energy. A two-dimensional axisymmetric model of the proposed magnetorheological damper is developed in COMSOL Multiphysics where different magnetic field properties are analysed generally by finite element method. Finally, the energy harvesting capability of the proposed magnetorheological damper model is tested by a universal testing machine and observed through an oscilloscope. The maximum induced output voltage was around 0.7 V.

Experimental Investigation of Multiple Coils Magnetorheological Damper under Dynamic Loadings

2014 ◽  
Vol 660 ◽  
pp. 863-867
Author(s):  
Izyan Iryani Mohd Yazid ◽  
Saiful Amri Mazlan ◽  
Takehito Kikuchi ◽  
Hairi Zamzuri
Keyword(s):  
Experimental Investigation ◽  
Mr Damper ◽  
Experimental Tests ◽  
Performance Comparison ◽  
Magnetorheological Damper ◽  
Applied Current ◽  
Damping Force ◽  
Dynamic Loadings ◽  
Experimental Parameters

This paper presents performance comparison of Magnetorheological (MR) damper with two different coil arrangements. Two coils at different location have been introduced that could enhance the activation areas in the MR damper. The experimental tests were conducted in three different conditions of coil; internal coils, external coils and the combination of coils. For each trial, the effect of the applied current and the condition of coils were analyzed and investigated. The results showed that the internal coil could produce higher damping force than the external coil, and the combination of internal and external coils could increase the damping force up to 125 N for the same experimental parameters.

scholarly journals Development of a Magnetorheological Damper with Self-Powered Ability for Washing Machines

2020 ◽  
Vol 10 (12) ◽  
pp. 4099
Author(s):  
Quoc-Duy Bui ◽  
Quoc Hung Nguyen ◽  
Tan Tien Nguyen ◽  
Duc-Dai Mai
Keyword(s):  
Energy Harvesting ◽  
Permanent Magnets ◽  
Mr Damper ◽  
Operating Conditions ◽  
Magnetorheological Damper ◽  
Shear Mode ◽  
Damping Force ◽  
Mr Dampers ◽  
Washing Machines ◽  
Self Powered

Magnetorheological (MR) dampers have been widely investigated and proposed for vibration mitigation systems because they possess continuous variability of damping coefficient in response to different operating conditions. In the conventional design of MR dampers, a separate controller and power supply are required, causing an increment of complexity and cost, which are not suitable for home appliances like washing machines. To solve these issues and to reuse wasted energy from vibration of washing machines, in this study, a self-powered shear-mode MR damper, which integrates MR damping and energy-harvesting technologies into a single device, is proposed. The MR damper is composed of an inner housing, on which magnetic coils are wound directly, and an outer housing for covering and creating a closed magnetic circuit of the damper. The gap between the inner housing and the moving shaft is filled with MR fluid to produce the damping force. The energy-harvesting part consists of permanent magnets fastened together on the shaft and induction coils wound directly on slots of the housing. The induced power from the induction coils is directly applied to the excitation coils of the damping part to generate a corresponding damping force against the vibration. In order to achieve optimal geometry of the self-powered MR damper, an optimization for both the damping part and the energy harvesting part of the proposed dampers are conducted based on ANSYS finite element analysis. From optimal solutions, a prototype of the proposed damper is designed in detail, manufactured, and experimentally validated.

scholarly journals Piezoelectric on Natural Fiber Reinforced Epoxy Composite for Wireless Energy Harvesting

2020 ◽  
Vol 2 (2) ◽  
pp. 20
Keyword(s):  
Energy Harvesting ◽  
Natural Fiber ◽  
Epoxy Composite ◽  
Electronic Devices ◽  
Experimental Tests ◽  
Electrical Energy ◽  
Power Electronic ◽  
Self Powered ◽  
Impedance Sensor ◽  
Wireless Energy Harvesting

Energy harvesting have a variety of application areas such as aircraft,automotive, medical this energy provides a route for the realization of autonomous and self-powered low power electronic devices, for wireless sensor networks, it eliminates the need for wireless or replacement batteries. The purpose of this paper is to develop and improve the capacity of energy harvesting. In this study, an MFC harvesting elements were laid up with the Natural fiber/epoxy composites that will be fabricated prapag at the fabrication stage, and co-within an autoclave that can convert mechanical vibrations to electrical energy will study to supply power a wireless impedance sensor node. Finally, a series of experimental tests will be verified.

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