Piezoelectric-based energy-harvesting power sources for gun-fired munitions

Rastegar, J.; Haarhoff, D.; Pereira, Carlos M.; Nguyen, Huy-Hieu

doi:10.1117/12.657441

Cited by 16 publications

(20 citation statements)

References 7 publications

(4 reference statements)

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“…The actual designs may vary to match the requirements of each application, including the available space, firing acceleration levels, the expected vibration levels and frequencies during the flight, the amount of energy to be produced, etc. For more detail the reader is referred to articles [8][9][10][11][12][13][14][15][16][17]. Figure 1: A mass-spring system mounted on Figure 2: The mass-spring system with a base the munitions structure.…”

Section: Mass-spring Vibrating Energy Harvesting Power Sourcesmentioning

confidence: 99%

“…As a result of the firing acceleration a, a force ma acts on the spring element, deflecting it a distance d, thereby storing an initial potential energy of ½ k d 2 in the energy harvesting device. In general, and specifically in very-high-G applications, provisions are made to limit the spring deflection and protect the piezoelectric element [8][9][10][11][12]. Once the projectile exits the barrel, the firing acceleration is no longer present and the massspring system begins to vibrate.…”

Section: Mass-spring Vibrating Energy Harvesting Power Sourcesmentioning

confidence: 99%

“…The first group, includes those devices in which the input shock loading results in potential energy to be stored in the spring (elastic) element of a mass-spring system, which will consequently cause the mass-spring system to begin to vibrate following barrel exit. The mechanical energy of vibration is then converted to electrical energy using a piezoelectric elements as described in [8][9][10][11][12] and briefly below. The second group are those that do not use spring elements to store mechanical energy, usually due to very small available volume for housing the device or when the shock loading duration is very short, even a fraction of one milli-second.…”

Section: Harvesting Electrical Energy From Firing Accelerationmentioning

confidence: 99%

“…Part of the work on this type of energy harvesting, particularly for applications on-board gun-fired projectiles have been reported in [8][9][10][11][12][13][14][15][16][17][18]. The developed piezoelectric power generators are generally suitable for applications with low to medium power requirements.…”

Section: Introductionmentioning

confidence: 98%

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Piezoelectric-based electrical energy harvesting and storage methods and electronics for munitions

et al. 2014

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The U.S. Armament Research development Center (ARDEC) and the Army Research Laboratories in Adelphi, Maryland, and their small business collaborator (Omnitek Partners, LLC) have been developing alternatives to current reserve batteries for certain munitions applications. It is shown that using a novel passive method, efficiency of over 70 percent could be achieved in the transfer of generated electrical charges to appropriate selected storage mediums. The paper also describes the development of test-beds to simulate electrical charge generation of the energy harvesting power sources during the firing and the flight for use in the design and evaluation of the collection electronics. INTRODUCTIONIn recent years, particularly following the development of low-power electronics, sensors and wireless communications devices, electrical energy generators that harvest energy from the environment have seen renewed attention. In this area, piezoelectric materials have been widely used to generate electrical energy from ambient vibration. Such electrical energy generators and methods of collecting, regulating and storing the generated electrical energy have been the subject of numerous studies (e.g., see [1][2][3][4][5][6]). For a review of the published literature on energy harvesting and related areas, the reader is referred to [7].Harvesting energy from transient high-shock events such as gun-firing and converting it to usable electrical energy is also not new. Part of the work on this type of energy harvesting, particularly for applications on-board gun-fired projectiles have been reported in [8][9][10][11][12][13][14][15][16][17][18]. The developed piezoelectric power generators are generally suitable for applications with low to medium power requirements. To date, several such piezoelectric-based power generators have been developed and tested for fuzing applications, which are designed to produce energy from firing setback acceleration.The launch environment of gun fired munitions provide high setback accelerations. Most munitions are also subjected to vibration and wobbling oscillations. Different methods for effective generation of electrical energy from firing setback acceleration and flight vibration and wobbling oscillations have been described in [8-13 and 15-17]. In munitions applications, the main motivation for using the described energy harvesting is the development of miniaturized power supplies to provide munitions with very fast power-up capability; to incorporate safety features with the powering up process; and to improve the shelf-life and temperature performance of the power source to meet military operational and storage temperature requirements of -65 to +175 º C and a shelf life of 20 years.Power sources developed with piezoelectric-based energy harvesting devices have been shown to be capable of replacing chemical-based power sources to meet many of munitions and fuzing power requirements, particularly where electrical energy of the order of 100 milli-Joules is to be provided. These power sources ...

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Section: Mass-spring Vibrating Energy Harvesting Power Sourcesmentioning

confidence: 99%

Section: Mass-spring Vibrating Energy Harvesting Power Sourcesmentioning

confidence: 99%

Section: Harvesting Electrical Energy From Firing Accelerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Piezoelectric-based electrical energy harvesting and storage methods and electronics for munitions

et al. 2014

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“…Such energy harvesting devices, particularly for applications on-board gun-fired projectiles have been reported in [8][9][10][11][12][13][14][15][16]. The developed piezoelectric power generators are generally suitable for applications with low to medium power requirements.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric energy-harvesting power source and event detection sensors for gun-fired munitions

2015

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This paper presents a review of piezoelectric based energy harvesting devices and their charge collection electronics for use in very harsh environment of gun-fired munitions. A number of novel classes of such energyharvesting power sources have been developed for gun-fired munitions and similar applications, including those with integrated safety and firing setback event detection electronics and logic circuitry. The power sources are designed to harvest energy from firing acceleration and vibratory motions during the flight. As an example, the application of the developed piezoelectric based energy harvesting devices with event detection circuitry for the development of self-powered initiators with full no-fire safety circuitry for protection against accidental drops, transportation vibration, and other similar low amplitude accelerations and/or high amplitude but short duration acceleration events is presented. The design allows the use of a very small piezoelectric element, thereby allowing such devices to be highly miniaturized. These devices can be readily hardened to withstand very high G firing setback accelerations in excess of 100,000 G and the harsh firing environment. The design of prototypes and testing under realistic conditions are presented

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A piezoelectric based energy harvester with dynamic magnification: modelling, design and experimental assessment

Castagnetti

Radi

2018

Meccanica

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This work presents a simple and innovative piezoelectric energy harvester, inspired by fractal geometry and intrinsically including dynamic magnification. Energy harvesting from ambient vibrations exploiting piezoelectric materials is an efficient solution for the development of selfsustainable electronic nodes. After an initial design step, the present work investigates the eigenfrequencies of the proposed harvester, both through a simple free vibration analysis model and through a computational modal analysis. The experimental validation performed on a prototype, confirms the accurate frequency response predicted by these models with five eigenfrequencies below 100 Hz. Despite the harvester has piezoelectric transducers only on a symmetric half of the top surface of the lamina, the rate of energy conversion is significant for all the investigated eigenfrequencies. Moreover, by adding a small ballast mass on the structure, it is possible to excite specific eigenfrequencies and thus improving the energy conversion. AQ1 Keywords Energy harvester Dynamic magnification Piezoelectric Multi-frequency 1✉ 1 1 21/5/2018 e.Proofing

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Piezoelectric-based energy-harvesting power sources for gun-fired munitions

Cited by 16 publications

References 7 publications

Piezoelectric-based electrical energy harvesting and storage methods and electronics for munitions

Piezoelectric-based electrical energy harvesting and storage methods and electronics for munitions

Piezoelectric energy-harvesting power source and event detection sensors for gun-fired munitions

A piezoelectric based energy harvester with dynamic magnification: modelling, design and experimental assessment

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