Good Afternoon, today we're going to talk about some new, high-efficiency piezoelectric
harvesters that were developed at NASA Langley Research Center. My name is Mia
Siochi, I'm from the Advanced Materials and processing branch here.
The other speaker is going to be Ji Su, also from the Advanced Materials
and Processing Branch. Our collaborators are Tian-Bing Xu and Jin Ho Kang, both from
the National Institute of Aerospace or NIA. NASA Langley has had a history of transferring some actuator
technologies developed here to industry. On this chart are examples of a couple of
commercially-available actuators that are based on NASA Inventions. On the left is
THUNDER which stands for Thin Layer Composite Unimorph Ferroelectric
Driver and Sensor. These devices are currently available from Face
International, and there's more information on these devices at the
link that shown here for Face International Corporation.
Another commercially available actuator is the piezoelectric Macrofiber Composite
technology show on the right, which is available from Smart Materials
Corporation. Their website information is shown here. More recently there is another example
of actuation technology developed here. It's called the hybrid actuation
system or HYBAS for short. Shown here is a schematic of this actuator
which combines two electroactive constituents. EAP stands for electrostrictive
G-elastomer which is shown here in Orange. And ESC designates the
electroactive single crystal element which is shown here in grey.
EAP offers positive dimensional change while ESC responds with negative dimensional
change under an electric field in a lateral direction. So what HYBAS is doing is using
the characteristics of the electromechanical response of the two electroactive
constituents cooperatively in order to achieve significantly increased
displacement for actuation with one single
input stimulus. So the performance of HYBAS is summarized on the right. It
is shown here as a function of applied voltage where the displacement is
plotted on the y-axis against position on the x-axis. So you can note that the
displacement of the hybrid system is greater than either one of the elements
alone with a contribution from the EAP element being greater at the higher
applied field shown on the bottom of the series of plots. Both of these technologies
take advantage of piezoelectric materials. These are materials that either change in
geometry or dimensions in response to an applied voltage, or they
generate electric charges when mechanical force is applied. So, the ability of
piezoelectric materials to generate voltage in response to mechanical stimulus is
what we want to take advantage of in the devices that will be described today.
These characteristics of the piezoelectric materials lend them to being used as
actuators as I've already shown,
or as energy harvesters. So, we're gonna be talking about several piezoelectric
energy harvester designs. Ji Su will be talking about one version and then I
will come in later with a different type of energy harvester. So the first type of
piezoelectric energy harvester will be discussed by Ji Su. It's called a hybrid piezoelectric
energy harvesting transducer system, or HYPEHT. (Ji Su) Thank you very much.
So, our hybrid actuation system was developed at NASA Langley Research Center years ago
The device demonstrated significant enhancement in actuation performance and proved concept
that two electromechanically active constituents opposite
electromechanical response
to a electrical excitement can be utilized in a cooperative mechanism for enhanced actuation
performance. As everybody knows, the electromechanical function is basically
is converse-able, right? You can use the system to convert electrical energy to mechanical energy or you
use mechanical energy and convert it to electrical energy. And then we are doing some
revisions to the actuation system, trying to make the system for the energy harvesting.
And so we have the HYPEHT, which is hybrid piezoelectric energy harvesting transducer system.
We have modulator stack and modulator constituents for the inner part and for the other part we are using the
multiple stacks. So, for the inner part we use the d31 effect. For the outer, curved part we are using
the D33 effect. We choose the materials from the APC International 855
These are PZT based ceramics and because they have reported as high a commercial efficiency and high
piezoelectrical constants. So the detailed information of the materials is given by the corner of
the right slide.
The slide gives us some kind of configuration and force distribution analysis. As you can see we have an inner layer
and outer layer and then while we have the force applied on the top of the outer layer, the force will be distributed
systematically to two ends, and then the whole device will experience either compression or the stretching.
This is the formula we are using the force analysis
for the modeling and calculations. And in this slide we are giving some basic information about the theoretical modeling we used for
this energy harvesting transducer system, and the
pollution from each ticket and then became the improve- ment racial high
pitched compared with the site of the user if you see the former you can see
it's always one factor is up to 80 is larger than 20 ok and that's going to be
home has it is we have been on a trip and the terms of this show you that
result of the composition as you can see from the left side that for the
preparation to have a paper on the autumn and attached to the movie profits
shaker and we did
dependence and proof mad if at all possible as you can see from the theater
on the right to Palo generation 10 P that's my butt
UK and Canada recently the ranch also both but it's also significant because
it will pop over and take pictures of the week
215 electrical power and pretend it but it is what it is and why and we also
charging capability for citywide capacitor and you can see we need about
eight supercapacitor from 0 to seven and energy is one hundred residents from
which is a 515 her and and composition hope to be wise for the Performing Arts
presidential from we are using the same setup framed system and from this figure
is on the right you can see my contribution to the generated from
Boulder later sank into the inner layer and also you can never do you can see ya
Institute more quote a generation why you have to force he thought the
electrical power generated higher doses to deploy generation increased appetite
and also you can see electrical power generated increased from fifty to call
this from this he is also president and then we can do some population we find
an array data Papalote shit implosion that apply to force generated after the
apollo are proportionate to the throne sassy and just 24 180,000 it was enough
to power generated and the footing YouTube shows the weight of the 21
crimes that's the way we're using for the population for the power generated
wait and then if he took contribution from each constitute to it after the
power generated you can also see this image as an Army their daughter line and
interline
show the increase as a function of metaphors and as a function of
differences and if you see the bottom part of it
chart you can see this all to the power regional out early you know they're
basically no matter what foreign currency and force applied and racial of
a contribution from each constitute basically gutted tested and then we did
population to he was a fishing see if conditions from mechanical energy into
electrical energy and if we find energy conversion efficiency
in about 40 pretty independent of applied on that and see you compare the
experiment over 3,000 more than the day with each other quite a while and 40% I
can get to that have to put energy it's a pretty significant number and full
did you perform as well ttyl see if you compare to the judging committee it's
really depends on the issue is that if we had that it was good to see with
fruity you to Florida pride about 23 second chart the supercapacitor frontera
27 vote which means much longer time than you did it in a minute to our
energy program where he died 22 conditions we can see the child in
performance can be comparable to the city is still the Jets if we use force
to 400 which is what we can do to help a capacitor from 0278 toward about 185
great energy harvester
no matter what is a fantasy who befriended
contributing remarks with this part we can see the truth and hybrid cars have
really good for the electromechanical devices including
and its hybrid energy wise show significant performance football 2006
and Russian energy from mechanical and it it would have to go in and she can be
about 40% higher efficiency and compared to have prayed with AK forty other
recreational and how the church we can to help companies higher power output
this the interview I work the polls and see if it is from defense and at home
against her and then that chart the top flight showing that was sleeping
acknowledged and performance hybrid and it can get and then we hope this can be
taken on a chip people recognized and used in the tragedy into her in nineteen
minutes
the energy harvester that i'm gonna talk about this is the multilayers harvesters
commercially available urges visitors that are based on using PDT is
immaterial PDT things for recording tightly and there's the front of the
Legion harvesters in the form of more than later stacks of 33 load PPG this is
a PDP issue has been shown to you the best performing energy harvesters
because industry three modes dipole moment is Carlo to mechanical force
input though this mode of PCG is able to attain 35 times higher mechanical and
electrical energy conversion efficiency compared to the mercurial the 31 mode
for the dipole moment is trippin political murder mechanical force and
put this is using PDT in a multi-layer Star Wars electrical charges are
generated compared to single air kisi ki then when you take this tack and how is
it within a fixed version free input forces captured from engine vibrations
are amplified to the greater mechanical engineer goes into the 33 mode PDT back
to using these design considerations these harvard's jurors generate
electrical power in commercially available devices but in the case of
those types of devices what we have found is they generate less than a
hundred million watts of power and the resonance frequency that they operate
under generally higher than those useful for many practical application so we
didn't talk about today is a is an energy harvester design that experience
on the 4th amplification principal socially on the truck design using a
two-stage amplifier the first stage consists of a large outer space station
refrain that is used to identify force input in the second stage is inside
larger frame is composed of four serially connected what social friends
that further amplify the input force before those forces are applied to each
other peers electric stack that infighting streams
input for mobile air stock is effectively quantified attempt at 800
occasions with First Age multiplied by the application of the second stage
which is designated herein the inclusion of them want an end to the mechanical
energy transfer it into PDT stack disproportionate to the square the force
which is applied in each pack design enhancing the interim forces in this way
it is possible to capture a lot more mechanical energy for inputs to the
trees remote key key facts are you using his jazz electric energy harvesters and
broader applications by designing them to respond to Indian vibrations are
commonly available the Churchill here
list examples of environment where needs maybe use they include things like
origins and clothes dryers and HVAC vents and office buildings among other
things that we have in this list is leading brands reduce vibrations and
frequencies ranging from tens to hundreds of hurts rather than in a
killer its reach in order to benchmark the performance of the energy harvester
we develop a look at how much power it needs to generate for it to have
practical and relevant application so the trench here shows at a park
consumption of some devices that can take advantage of renewable energy
sources
prices and benefits power sources on the order form regional water so in the
following charts were going to demonstrate the performance of the first
electric devices we develop here
11 consideration for the energy harvester that we design shown you to be
operated by just
using force from finger compression are the force input to the stand for the
over all the mention of the energy harvesters about 70 millimetres by 48
kilometers 131 leaders and weight is about 80 grams but at the heart of this
device or ceramics tax which is about 70 years I seventy leaders by 32 meters and
the issue about 9 percent shooting years that were cyclically compressing the
ceramic stack and the voltage generated as shown on the part of the Masters on
the order of luxurious involved at 4:25 hurts and this translates into
approximately three international waters electrical power generated a few minutes
we can charge up a 6600 microfiber supercapacitor shown on the right to
weaken charged from 6 votes over about six minutes and the story energies over
a hundred million shares the same or similar views electric energy harvester
does not counted on a military uses configuration so that we can control the
infant forces in a broad range of frequencies are using the shadow of the
infant forces that we tried our one unified in 15 years these forces were
applied and there's frequencies of the blocks on the right shows the results
they know they applied for showing that a lot and then the voltage generated in
the middle plot and the power is generated as a result of this voltages
shown in the bottom of the middle class showed that the ball is generated
increased proportionally with into force in on the bottom so we should what we
see is that the electrical towers proportional to the frequency and the
squarely point Force Base chart
we generated data showed on the chart by mounting the two years old furniture on
the surface of the shakers to simulate it responds to vibration input to the
resonant frequency for the devices in the range of about a hundred it hurt in
one hundred residents without a truce managed to plan a live show the Voyager
is about 10 Bowl for half of G acceleration and this rate of
acceleration is akin to what you get in a blender
regenerated is approximately 350 million watch and then be used the harvester
disk configuration to middle-class shows that it took about eight seconds to
fully charges 6600 microphone arid capacitor from 0 to about seven goals in
the acceleration were not increased 21 G which is the level of vibration from a
car engine the rightmost ponchos and it only took took two seconds before we
charge the capacitor
another motive operating the harvesters is getting approved mass and using them
resonance frequencies but we seniors depending on improvements that we use in
the left slot and show no proof mass for the black curve for twenty grams of
proof matches the red curve in and 40 and 50 grams for the blue curves and he
sees it as a proof has increased the resonance frequency get over so we can
do here is the proof mass can be used to tune the resonance frequency of the
harvester you can know that when we asked the girls of truth and a quarter
of the G acceleration this acceleration the similar to the level that you give
her a clothes dryer and it took only eight seconds to fully charge the
capacitor
to show the performance of the harvesters that we develop we wanted to
go tiered
performance of the developed harvester with wanted commercially available we
recognize however that what we have here is a two-stage harvester still
commercially available harvesters are generally single stage and so you know
how do we how do we really fairly evaluate the performance of my monitor
compared to one that we're using the bench market knowing that ours is a
two-stage harvester and commercially available to researchers are also
enabled PCs PC three facts but they only use one stage for amplification still
showing here is the performance of a one-stage a two-stage harvester that we
need to do this one stage harvester bring dimensions and geometry that's the
same as what we used to include in a Tuesday harvester with the right shows
that offers and frequency of 56 a difference as the point of comparison
produced agent in charge but certain times greater per stack if we did not
realize the output they've done a number of PC key elements that are responding
to the Internet chemical energy so in a two-stage for staff in a one-stage it
only wants tax free savings 13 times greater is is already divided by the
number of stacks and why the total differently about 52 times greater
operated devices at the resonant frequency which is a real estate heard
for the truth HIV stir in 1 killer hurts when one stage system the power output
is about thirty turns first act better for the Tuesday Charminster but the
difference is that the 2004 minister of Aboriginal broader range of practical
frequencies since it's a 900 perch rather than in the kilohertz
we're trying to make it valid comparison of the NASA developed harvester would a
commercial energy harvester knowing that the commercial harvesters use a
one-stage device and the dimensions of those that one stage the bodies are not
exactly the same what we use in our two-stage devices as well as possible
wanna do is make the comparison between conservatives and dividing the response
we get from the national average by four and the way of normalizing the output so
we basically just normalizing based on what we know to be the number of kids
electric elements that are in the harvester finished looking at is a
comparison of the Langley harvester there's a commercial furniture operating
on presidential power the same level acceleration after the frequency such as
50 heart of the matter the two-stage are generated objects and returned more
electrical power person that can be commercial have Easter where do the same
level of acceleration frequency to win a treatment facility ground is added to
both harvesters and this is the ideal operating conditions for both harvesters
the two-stage mister still puts out about 30 current first and more power
than the commercial harvesters
know that from the left even with an approved now the two-stage heard this
place is stronger resonance peak and the commercial harvester which is being
operated here without proof to summarize the difference in performance without
through the generated magical approving the harvester about 600 registration
expired on the commercial harvest your upbringing that the same hot resonance
frequency is if we're comparing them with improvements and generate
electrical power from the money harvesters about 50 times for stocks
higher in the commercial harvester working at the same off resonance
frequency and finally the lengthy harvester has a strong president speech
even without treatment in europe compared the performance of the
harvesters and match resistors because this is the configuration that yield the
highest power output than what we see is that under the same measurement
condition Tuesday Charminster delivered ten times first act more power than the
single-stage commercial harvesters the total power output for the link the
armature show near 64 milliwatts and so will be normalized by for this concerned
about $16 watch for stack in comparison the one stage rehearsal device put out
about 1.7 million watts of power so this is about 10 times lower power output
from the commercial harvest in comparison to the National harvesters
and we consider the performance of the devices of their resonant frequency
the part of the body's operated without proof mass shown here on the left is
about three times better than the commercials harvester the total output
power is 168 no walks so we normalize it at about 1700 watts per stack of the
resonance frequency the 100 church and they're right there are shown for the
commercial harvester operator interested intrigued with about one killer hurt
when a 53 ground troops now patrol car put of in this configuration was not
travel have no water till we know that the output of the little guys first act
it's still about three times greater than the commercial device operating
under is optimal conditions with about the same crew from a security groomed
and went to third G acceleration the two states that harvester report less than
10 seconds to fully Sharjah secret pastor resonant frequency harsh origin
of 1.5 G was required for the crucial harvester to fully charge supercapacitor
shown and rightmost and it required about 47 Sushil so they were normalized
charging him again by for and about six times greater acceleration to fully
charge the supercapacitor for the commercial the bars versus a net advice
conclusion we have shown here we compare the performance of two-stage harvester
developed a national generate significantly higher political power
than a commercially available for amateur days communities the condition
and we show the performance of resolution authorizing with and without
approval mashed and using match through the Baloch and residents NASA orbiter
either with or without treatment actually charge the capacitor faster
than the commercial harvester operating with 203 leader resolution policy of the
National Register is new range of many practical application compared to the
commercial harvester
demonstrate the actual Felicity servicers in a couple of examples shown
in the video now we're gonna demonstrate the performance of this energy harvester
with two examples the first only show is a wireless sensor and the second
demonstration illustrates the generator light up some LEDs the setup here shows
a black box which is XYZ sensor so it gives you XYZ location it's not on top
of a mock aircraft in its going to be powered by electric energy harvester
which is shown here stay in touch to a shaker which is going to simulate
vibrations that will be used as input forces generated is going to be tracked
by this book me here and then stored in a super capacitors shown me so well
plugging in the shaker so you can see the voltage is generated immediately in
response to the input force
and when we get up to about four votes there should be enough to initiate the
operation of the wireless sensor when we get there were gonna hook up the
wireless sensor and you can see that the aircraft is being moved up and down
sideways and that the signal of those locations are being recorded remotely
the computer and receiver for the signals are located about 300 feet away
in another room and the blue the green and red signals indicate the location of
the aircraft index the wine is a direction for the second demonstration
gonna show is using his electric energy harvester delight of about 50 LEDs their
true colors it spells out in a sec and those who are compressing the energy
harvesters generating enough voltage that's directly being used to light up
the LEDs and show we're using two stacks in this case because what we're doing
here in generating AC voltage and every other LED is connected to the opposite
face to make sure that half of the LTE EPC light up when it generated voltage
is positive and the other half lights up when the generated negative and they
still have all the requirements for these LEDs that we used to estimate in
about 70 million watts of power generated and compression cycle in order
to actually light up led peace
For more infomation >> Resident Evil 7 - walkthrough - part 4 (magyar felirattal!) - Duration: 35:01. 
For more infomation >> Silence
For more infomation >> Helping households heat their homes through the ECO scheme - Duration: 1:07. 
For more infomation >> Spiderman PS4 - Trailer (legendas disponíveis) [HD] - Duration: 1:30. 
For more infomation >> Sem medo de errar! - Duration: 2:31. 
For more infomation >> Equação Exponencial - ( Aula 1 ) - Duration: 18:21. 
For more infomation >> CNCO: 50 FATOS SOBRE JOEL PIMENTEL | (subtitulado) - Duration: 10:48. 
For more infomation >> We sailed around the Cape of Good Hope, South Africa!! SV Delos Sailing EP. 103 - Duration: 26:45. 
For more infomation >> Mercedes-Benz E-Klasse 200-500 200 D Schuifkanteldak Lichtmetalen Velgen - Duration: 1:16. 
For more infomation >> Paw Patrol Full Episodes English 2017 || Joker Put Insects into Skye Birthday Cake and Chase - Duration: 3:01. 
For more infomation >> Volvo V40 D2 2.0 120PK R-DESIGN, Navigatie, 14% - Duration: 0:41. 
For more infomation >> #AbrahamHicks • You don't need to know exactly what you want to do ♦ Esther Hicks #LawofAttraction - Duration: 14:05. 
For more infomation >> Dethleffs Advantage 6611 T - Duration: 1:25. 
For more infomation >> Audi A1 Sportback S-line Navi 1.2 63 kW / 86 pk T - Duration: 1:15. 
For more infomation >> Cognates: Words you already know in foreign languages - Duration: 1:34. 
For more infomation >> Trip To Italy - Lake Garda - Duration: 11:58. 
For more infomation >> Nature sound Relaxing - Natural stream in Dubí Full HD - Duration: 30:29. 
No comments:
Post a Comment