Energy Harvesting From Human and Machine Motion for Wireless Electronic Devices

Mitcheson, Paul D.; Yeatman, Eric M.; Rao, G. Kondala; Holmes, Andrew S.; Green, Tim

doi:10.1109/jproc.2008.927494

Cited by 1,592 publications

(921 citation statements)

References 125 publications

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“…Also, the efficiency cannot be defined in terms of the potential mechanical power available from the source as, in some applications, the loading by the harvester does not influence the dynamics of the source of vibration. Hence, the potential mechanical power available from the source is effectively limitless [14]. To compare the power output of various transducers, a dimensionless figure of merit, called effectiveness e, is introduced by Roundy [28] which is defined as…”

Section: Power and Efficiency Of An Electromagnetic Constrained Transmentioning

confidence: 99%

“…To investigate how close a device is to its optimum performance and distinguish between different proof mass densities and geometries, Mitcheson et al [14] introduce a "volume figure of merit", defined as Although the "volume figure of merit" facilitates the comparison of a harvesting device performance with a reference ideal energy harvesting system, it does not enable the calculation of input power absorbed by the system to produce a certain amount of output power. Elliott and Zilletti [27] conducted research into scaling of linear electromagnetic transducers for power harvesting and shunt damping.…”

Section: Power and Efficiency Of An Electromagnetic Constrained Transmentioning

confidence: 99%

See 1 more Smart Citation

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Hendijanizadeh¹,

Sharkh²,

Elliott³

et al. 2013

Smart Mater. Struct.

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Abstract. In some energy harvesting systems, the maximum displacement of the seismic mass is limited due to the physical constraints of the device. This is especially the case where energy is harvested from a vibration source with large oscillation amplitude (e.g., marine environment). For the design of inertial systems, the maximum permissible displacement of the mass is a limiting condition. In this paper the maximum output power and the corresponding efficiency of linear and rotational electromagnetic energy harvesting systems with a constrained range of motion are investigated. A unified form of output power and efficiency is presented to compare the performance of constrained linear and rotational systems. It is found that rotational energy harvesting systems have a greater capability in transferring energy to the load resistance than linear directly coupled systems, due to the presence of an extra design variable viz. the ball screw lead. Also, in this paper it is shown that for a defined environmental condition and a given proof mass with constrained throw, the amount of power delivered to the electrical load by a rotational system can be higher than the amount delivered by a linear system. The criterion that guarantees this favorable design has been obtained.

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Section: Power and Efficiency Of An Electromagnetic Constrained Transmentioning

confidence: 99%

Section: Power and Efficiency Of An Electromagnetic Constrained Transmentioning

confidence: 99%

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Hendijanizadeh¹,

Sharkh²,

Elliott³

et al. 2013

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Even if big mills tend to have an efficiency close to the Betz limit, small devices operating at low speeds suffer from increased mechanical and viscous friction, reducing their efficiency to about 1/6 of the Betz limit [20]. To scavenge energy from the air flow, most researchers are using a custom rotor coupled with a standard DC motor operating in generator mode [8,28], even powering sensor nodes [9,36].…”

Section: Gas and Liquid Flowsmentioning

confidence: 99%

Towards Autonomous Energy-Wise RObjects

Vaussard

Bonani

Rétornaz

et al. 2011

Towards Autonomous Robotic Systems

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Abstract. In this article, the RObject concept is first introduced. This is followed by a survey of applicable energy scavenging technologies. Energy is a key issue for the large scale deployment of robotics in daily life, as recharging the batteries places a considerable burden on the end-user and is a waste of energy which has an overall negative impact on the limited resources of our planet. We show how the energy obtained from light, water flow, and human work, could be promising sources of energy for powering low-duty devices. To assess the feasibility of powering future RObjects with technologies, tests were conducted on commonly available robotic vacuum cleaners. These tests established an upper-bound on the power requirements for RObjects. Finally, based on these results, the feasibility of powering RObjects using scavenged energy is discussed.

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“…Michelson et al, have surveyed and organized main features of published energy harvesters [8]. The thinkable transduction mechanisms that can be applied for motion micro energy harvesting are basically categorized as piezoelectric, electromagnetic, and electrostatic.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of A MEMS Based Capacitive Energy Harvester

Azizi

Rahimpour

Rad

2017

KJAR

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Energy harvesting is defined as a technology that converts the available excess energy in the environment into usable energy for low power consuming electronics. Past researches on vibration energy harvesting has focused mainly on the use of magnets or piezoelectric materials as the basis of energy transduction. This paper presents a new design for extracting energy using an electrostatic capacitive energy harvester which can be considered as a combination of charge constrained and voltage constrain cycles. In previous analyses, the constant charge and constant voltage operation were studied separately, but in this work both of these operations have been studied in a combination with each other. In this paper, the variable capacitor is formed by an out of plane gap closing structure. In order to investigate the mechanical behaviour of the capacitive energy harvester, a rectangular micro plate is considered with geometrical and material properties. Due to the nonlinearity and low displacement amplitude that result from electrostatic force, energy can be generated. In order to study the primer factors for increasing generated energy, geometrical parameters of the system have been changed. Time history of the shuttle mass and micro-plate undergone vibration are illustrated. It must be noted that after several cycle vibration of the plate, it reaches to stability and regular cycles.

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Energy Harvesting From Human and Machine Motion for Wireless Electronic Devices

Cited by 1,592 publications

References 125 publications

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Towards Autonomous Energy-Wise RObjects

Mechanical Behavior of A MEMS Based Capacitive Energy Harvester

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