CN107612418A - Automobile tire Non-Linear Vibration TRT based on centrifugal forces affect - Google Patents
Automobile tire Non-Linear Vibration TRT based on centrifugal forces affect Download PDFInfo
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- CN107612418A CN107612418A CN201710747786.7A CN201710747786A CN107612418A CN 107612418 A CN107612418 A CN 107612418A CN 201710747786 A CN201710747786 A CN 201710747786A CN 107612418 A CN107612418 A CN 107612418A
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Abstract
The present invention discloses the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect, including TRT pedestal, vibrating power-generation unit and detection unit, TRT pedestal connects vibrating power-generation unit and detection unit, then TRT pedestal is fixed by U-type groove and wheel hub, vibration unit is fixed by centrifugal direction of the cantilever beam fixing end along wheel hub, and centrifugation distance of the first magnetic mass away from tire pivot wheelbase is adjustable；Detection unit is secured by bolts in one end of TRT pedestal.The present invention can increase the response band of system by using the centrifugal forces affect with behavioral characteristics, realize wide band height output response, improve actual automobile vibration power generation performance, solve the problems, such as that the power supply of rotation tire is difficult at a high speed.
Description
Technical field
The invention belongs to technical field of vibration power generation, and in particular to the automobile tire Non-Linear Vibration based on centrifugal forces affect
TRT.
Background technology
With the proposition of car networking (IoV) concept, sensing detection equipment increasingly tends to low power consumption, integrated, miniaturization
Development, also it is badly in need of increasing sensor and goes to monitor the miscellaneous information of car body, but how sustainable gives sensor
The power supply stablized, establishing green low-carbon type car networking system turns into urgent problem to be solved；Therefore automobile ring is collected
Vibrational energy existing for border come realize sensing equipment confess power technology, receive extensive concern and the support of countries in the world.At present
Vibrating power-generation technology is broadly divided into three classes：Electromagnetic type generates electricity, electrostatic generating and piezoelectric type generate electricity, electromagnetic type gas-to electricity electromagnetism
Induction, in the case where relative motion occurs for permanent magnet and closed loop coil, induced electromotive force is inspired so as to be produced in coil
Raw electric current；The electrostatic gas-to electricity relative motion between electret material forever changes effective displacement, area and produce electric charge
Outflow；The distinctive physical characteristic of piezoelectric type gas-to electricity piezoelectric, by stress conversion caused by external vibration into electric energy,
End is loaded with magnetic mass, and the cantilever beam of surface mount piezoelectric is the most representational construction of piezo-electric generating technology.On
Three kinds of electricity-generating methods are stated, linear resonance phenomenon are utilized mostly, by the intrinsic frequency and environmental vibration frequency that adjust TRT
It is consistent improve generating efficiency, but because resonance only occurs in a certain fixed frequency value, it is impossible to ensure electricity generation system can
Become under high frequency band input condition and still remain higher power generation performance, therefore energy is carried out by linear generation technology traditional at present
Amount recovery, generating capacity are in a relatively low level.
In order to solve conventional linear TRT narrow-band response problem, masschusetts, U.S.A Polytechnics Gu, L. in 2010 etc.
(Gu,L.,Livermore,C.,Passive self-tuning energy harvester for extracting
energy from rotational motion.Applied Physics Letters,97(8):081904,2010.) propose
The influence of centrifugal force is produced using rotation, the equivalent elastic coefficient by adjusting cantilever beam changes the intrinsic frequency of system in itself
Rate, the matching of intrinsic frequency and speed can be realized by optimizing systematic parameter in advance, so as to reach the purpose for improving generated energy；
However, because the method is in frequency matching process is adjusted, it is difficult to ensure that the reason for frequency is completely the same, effective generating frequency band compared with
It is narrow then to cause practicality relatively low.Therefore, (Roundy, S., Tola, J., the Energy such as Univ Utah USA Roundy, S.
harvester for rotating environments using offset pendulum andnonlinear
dynamics.Smart Materials and Structures,23(10):105004,2014.) to propose mono-pendulum type non-thread
Property electricity generation system, by using the characteristic phenomenon of nonlinear system, can solve the problem that linear system vibration is asked by range is limited
Topic, can realize the vibration of wideband large amplitude, so as to improve the power generation performance of system；But also there is certain limitation in this technology
Property, not using centrifugal force for stablizing the positive role of High-Energy Orbit vibration, cause the speed that effectively generates electricity to keep
In the frequency range of a certain fixation, in the case where rotating speed is in too high, the reason for response of system is in low energy track vibration,
Generating effect is not still especially desirable.
The content of the invention
In order to improve the power generation performance of TRT, solves the narrow-band response problem of conventional power generation systems, the present invention carries
The non-linear cantilever beam structure TRT of automobile tire generating is gone out to apply to and has been entered using the influence of rotary centrifugal force
One step widens system response band.This structure passes through the optimization design to parameter and progress for the speed of different kinds of tyre
Duffing kinematics parses, it is found that generated energy can be not limited by the vehicle speed and stably on the energy levels of height output, so as to increase
Add the section of response frequency, improve power generation performance.Therefore the self-powered target of tire pressure monitoring system is can be implemented as, from
And solve the problems, such as that the power supply of rotation tire is difficult at a high speed.
In order to achieve the above object, the present invention uses following technical scheme：
Automobile tire Non-Linear Vibration TRT based on centrifugal forces affect, including TRT pedestal, vibrating power-generation
Unit and detection unit, the TRT pedestal connect vibrating power-generation unit and detection unit, and then TRT pedestal leads to
U-type groove is crossed to fix with wheel hub；
The vibrating power-generation unit includes cantilever beam, the first magnetic mass, the second magnetic mass and is pasted onto outstanding
Cantilever beam fixing end is fixed in the piezoelectric on arm beam surface, described cantilever beam one end, and the cantilever beam fixing end passes through bolt
It is fixed on TRT pedestal, the cantilever beam other end is free end, along tire Pivot axle, cantilever beam fixing end
Centrifugal direction fix the first magnetic mass, the first magnetic mass opposite slightly to the right or left certain distance fixes the second magnetic quality
Block, the second magnetic mass in the horizontal direction and are screwed on balance mass by the second magnetic mass position adjustments
On block, the balance mass block is secured by bolts in TRT pedestal one end；
The detection unit is secured by bolts in the other end of TRT pedestal, and the detection unit is examined including voltage
Device, acceleration detector and blue-teeth data transmission equipment are surveyed, the voltage detector is used for the output voltage for detecting piezoelectric,
And the data of voltage detector collection are stored in voltage detector in itself, the acceleration detector is used for the acceleration for detecting tire
Degree, and the data of acceleration detector collection transmit computer by blue-teeth data transmission equipment；
The TRT pedestal is shaped as rectangle, and rectangular long side is provided with groove so that TRT base
Seat forms the different two parts of width, and two long sides of narrower width are provided with the parallel cantilever beam position fixed ends regulation spiral shell of two rows
Bolt, for adjusting cantilever beam position fixed ends, two long sides of wider width are provided with the second parallel magnetic mass of two rows and consolidated
Fixed end bolt hole, for adjusting the second magnetic mass position fixed ends.
In such scheme, there is adjustable centrifugation distance in the center of gravity of the first magnetic mass to tire Pivot axle
l’。
Preferably, the piezoelectric is ceramic material.
Preferably, the material of the first magnetic mass and the second magnetic mass is strong permanent magnets.
Preferably, the material of the cantilever beam is stainless steel.
Beneficial effects of the present invention are：The advantages of present invention is by using nonlinear bistable system High-Energy Orbit, with reference to
Tire rotary motion produces the dynamic characteristic of centrifugal force so that the equivalent elastic coefficient of cantilever beam is passed with tire speed
Increase and increase, cause bistable two gesture well depths to gradually become shallower as, final cantilever beam is by original nonlinear bistable system
Non-linear monostable system is developed into, and original bistable state High-Energy Orbit oscillation phenomenon is also gradually to non-linear monostable high energy
Drifted about on track；Combination using two kinds of non-linear High-Energy Orbit oscillation phenomenons further expands the advantage of this TRT,
So as to realize the high efficiency generating target in wide vehicle speed range.
Brief description of the drawings
, below will be to embodiment and experimental verification in order to illustrate more clearly of embodiment of the present invention and its validity
The result form introduction that passes through accompanying drawing.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of vibrating power-generation unit of the present invention；
Fig. 3 is that vehicle speed of operation exports response characteristic figure with cantilever beam speed.
Wherein, drawing reference numeral：01- TRT pedestals；02- the second magnetic mass fixing end screws；The magnetic of 03- second
Mass；04- cantilever beams；05- piezoelectrics；06- cantilever beam fixing ends；07- the second magnetic mass position adjustments screw threads；
08- the second magnetic mass fixing ends；09- the first magnetic masses；10- tire Pivot axles；11- cantilever beam fixing ends position
Put adjusting screw hole；12- detection means；13- tires.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings and the specific embodiments, but protection scope of the present invention is simultaneously
Not limited to this.
In the description of the invention, it is to be understood that the orientation or position relationship of the instruction such as term "left", "right" are base
In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of invention.
As shown in figure 1, the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect, including TRT pedestal
(01), vibrating power-generation unit and detection unit 12, TRT pedestal 01 connect vibrating power-generation unit and detection unit 12, then
TRT pedestal 01 is fixed by U-type groove and wheel hub；TRT pedestal 01 is shaped as rectangle, and rectangular long side
It is provided with groove so that TRT pedestal 01 forms the different two parts of width, and two long sides of narrower width are put down provided with two rows
Capable cantilever beam position fixed ends regulating bolt 11, for adjusting the position of cantilever beam fixing end 06, in two long sides of wider width
Provided with the second parallel magnetic mass fixing end bolt hole 02 of two rows, for adjusting the second magnetic mass fixing end 08
Put.
Vibrating power-generation unit includes cantilever beam 04 (stainless steel), the first magnetic mass 09, the second magnetic mass
03 and it is pasted onto the piezoelectric 05 on the surface of cantilever beam 04 and (is made up of ceramic material, it is ensured that can by stress caused by vibration
Expeditiously it is converted into electric energy), the material of the first magnetic mass 09 and the second magnetic mass 03 is strong permanent magnets,
In the case of the keep level of cantilever beam 04, the polarity distribution of permanent magnet is also installed in the freedom of cantilever beam 04 in the horizontal direction
End；Cantilever beam fixing end 06 is fixed in the one end of cantilever beam 04, and cantilever beam fixing end 06 is secured by bolts in TRT pedestal
On 01, the other end of cantilever beam 04 is free end, is fixed along the centrifugal direction of tire Pivot axle 10, cantilever beam fixing end 06
First magnetic mass 09, the opposite slightly to the right or left certain distance of the first magnetic mass 09 fix the second magnetic mass 03, the second magnetic
The polarity distribution of mass 03 and the first magnetic mass 09 is in opposite direction, can thus produce mutually exclusive magnetic force, due to
Repulsion is present, and cantilever beam 04 becomes nonlinear system from linear system originally, when the distance adjustment of two magnetic masses
To it is near enough when, cantilever beam 04 begins to drift from originally equilbrium position in the first magnetic mass 09 in the presence of by repulsion, and
New Non-linear Balanced point is still in, so as to produce bistable state point；Second magnetic mass 03 in the horizontal direction and passes through second
Magnetic mass position adjustments screw thread 07 is fixed on balance mass block 08, and balance mass block 08 is secured by bolts in generating dress
Put the left end of pedestal 01.
Detection unit 12 is secured by bolts in the low order end of TRT pedestal 01, and detection unit 12 includes voltage detecting
Device (DSO Nano v3, SeeedStudio), acceleration detector and blue-teeth data transmission equipment (MVP-RF3-J,
MicroStone), voltage detector is used for the output voltage for detecting piezoelectric 05, and the data of voltage detector collection preserve
In voltage detector body in itself, acceleration of the acceleration detector for detecting tire 13, and acceleration detector collection
Data transmit computer by blue-teeth data transmission equipment.
Fig. 2 show vibrating power-generation unit, and cantilever beam 04 is fixed on cantilever beam fixing end 06, the first magnetic mass 09
Distance of centre of gravity tire Pivot axle 10 centrifugation distance be l ', wheel hub do not have rotation in the case of, the first magnetic mass
09 the second magnetic mass 03 magnetic repulsion force FmagIn the presence of, bistable upper equalization point is still in, according to original state
Difference can also be still in lower equalization point.
The course of work of automobile tire Non-Linear Vibration TRT based on centrifugal forces affect is：
Tire 13 with wheel hub around tire Pivot axle 10 rotate in an anti-clockwise direction when, the first magnetic mass 09 from
In the presence of body gravity, generation and the speed identical periodicity input stimulus of tire 13, and with the increase of driving frequency
The response of cantilever beam 04 gradually from low energy track motion jump to High-Energy Orbit motion, simultaneously because the increase of the rotating speed of tire 13 with
And first magnetic mass 09 center of gravity and tire Pivot axle 10 between exist centrifugation distance l ', cause the first magnetic quality
Centrifugal force caused by block 09 is increasing, and the equivalent elastic coefficient of cantilever beam 04 is influenceed to become can not ignore.
With the increase of the rotating speed of tire 13, the first magnetic mass 09 will produce rotary centrifugal force Fc, rotary centrifugal force Fc's
Respectively along with the vertical direction of cantilever beam 04 and along the direction of cantilever beam 04 (Fig. 2), the centrifugal force ft of vertical direction will by component ft, fc
Increase the restoring force of cantilever beam 04, be equivalent to the equivalent elastic coefficient for improving cantilever beam 04, it is achieved thereby that cantilever beam 04
Linear equivalence coefficient is transformed into positive characteristic (monostable) from originally negative characteristic (bistable state).
The present embodiment is to verify facilitation of the centrifugal force to power generation performance by the non-linear TRT of application, in order to
Can be that High-Energy Orbit drift phenomenon is observed within 40km/h in the max speed, the intrinsic elasticity factor design of cantilever beam 04 is
30N/m, the quality of the first magnetic mass 09 are 8g, and linear coefficient is 10N/m between magnet, between magnet nonlinear factor be 2 ×
104N/m3；In order to ensure that cantilever beam 04 in vibration processes there is obvious displacement characteristic to reach preferable generating effect, cantilever
Beam 04 chooses very thin 0.2mm stainless steels as material, 04 a length of 4.6cm of cantilever beam；Experiment specific implementation, which passes through, compares
The generated energy of difference centrifugation distance, every kind of distance verify the validity of the present embodiment by travelling different speeds.
Contrast experiment's condition is as follows：1. it is that 2. to centrifuge distance l ' be 3. 3.6cm is centrifuged to 0cm (pivot) to centrifuge distance l '
Distance l ' is 7cm, i.e., does not consider the situation of centrifugal force, centrifuges distance l ' optimal locations and centrifugation based on simulation result (Fig. 3)
Distance l ' crosses distant positions and carries out real vehicle checking as three kinds of situations；Corresponding three kinds of different centrifugation distances, vehicle is with speed 5km/h
40km/h is increased to from 10km/h for interval, and keeps every kind of speed with invariable speed walking equidistance, based on piezoelectricity
The larger external resistance of this confirmatory experiment selection of the internal resistance of material 05 is 150k Ω；The regulation of cantilever beam position fixed ends adjusting screw hole 11 is outstanding
Arm beam fixing end 06 changes l ', while the second magnetic mass position adjustments screw thread 07 adjusts the second magnetic mass 03, ensures
The distance between second magnetic mass 03 and the first magnetic mass 09 are certain.
The situation that distance l ' is 0cm is centrifuged, such as Fig. 3 simulation results, due to the influence of nonlinear bistability High-Energy Orbit, is rung
Higher output should can be kept in certain speed section, and is also increased as speed gathers way to export to respond, when speed surpasses
When crossing 27.8km/h, the output response of cantilever beam speed will fall to low energy track from High-Energy Orbit, and continue low energy track vibration
To 40km/h.Experiment calculates the virtual value (RMS) of the output instantaneous voltage of piezoelectric 05 by MATLAB, when speed is less than
During 15km/h, output instantaneous voltage virtual value is in reduced levels (0V~0.8V)；When vehicle speed range is 15km/h-25km/h,
Output instantaneous voltage virtual value can reach higher level (2.2V~2.3V)；Speed is more than 25km/h, in 30km/h-40km/h models
Enclose, because High-Energy Orbit falls to the influence of low energy track, output instantaneous voltage virtual value falls into reduced levels (1.2-1.5V),
It is consistent with simulation result variation characteristic, thus when centrifuging the situation that distance l ' is 0cm effectively generating vehicle speed range in 15km/h-
25km/h.The shake table detection exported based on same period acceleration of gravity before experiment, when cantilever beam is in low energy track vibration
When (vibrated in a certain independent gesture well), output voltage range is reduced levels in 0V-1.58V；When cantilever beam is in High-Energy Orbit
(vibrated during vibration between two gesture wells), output voltage range is compared with Gao Shui in this scope or higher than this scope in 1.85V-2.4V
It is flat.
The situation that distance l ' is 3.6cm is centrifuged, even if effective generating speed, more than 25km/h, generate electricity dress as shown in Figure 3
The speed output put will continue to be kept stable on the High-Energy Orbit of high response, and remain to 40km/h.Experimental calculation obtains：Car
Speed in 10km/h-40km/h, piezoelectric 05 export instantaneous voltage virtual value be always held at higher level (1.9V~
2.5V), it is consistent with the variation characteristic of simulation result, therefore the vehicle speed range that effectively generates electricity when centrifuging the situation that distance l ' is 3.6cm
It is increased to 10km/h-40km/h.
Centrifugal force distance l ' is 7cm situation, and because centrifugation distance l ' is too remote, equivalent linear coefficient increases too fast, cantilever
Beam 04 it is too early be converted to monostable from nonlinear bistability, cause cantilever beam 04 not respond bistable High-Energy Orbit fortune
It is dynamic, so the power generation performance step-down of TRT, and output instantaneous voltage effective voltage value is calculated and is in reduced levels
(0.55V~1.32V).
Therefore in the case of centrifugal forces affect is considered, when centrifugation distance is adjusted to optimal location (l ' is 3.6cm), Neng Goushun
Profit promotes the generated energy of TRT while the change of the steady-state characteristic of cantilever beam 04 also to stablize all the time horizontal compared with height output
On.
By the present invention, average generated energy meets the μ W demands of tire pressure monitoring system power consumption 5 up to 60 μ W.Need
It is noted that this invention is relatively low in order to have chosen coefficient of elasticity in the max speed 40km/h checking High-Energy Orbit drift phenomenons
The cantilever beam 04 of (30N/m)., can be by increasing the intrinsic elasticity system of cantilever beam 04 itself if further improving the max speed
Number, allows the vibratory response of cantilever beam 04 to float to the rotary frequency of non-linear monostable High-Energy Orbit from nonlinear bistability High-Energy Orbit
Rate increase, and then effective vehicle speed range of TRT high efficiency generating can be lifted, i.e. the device is common to actual vehicle speed
Concrete condition.
It is described above that the present invention is briefly described, not by above-mentioned working range limit value, as long as taking the present invention
Thinking and method of work carry out simple modification and apply to other equipment, or make and changing in the case where not changing central scope principle of the present invention
Enter and retouch etc. behavior, within protection scope of the present invention.
Claims (8)
1. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect, it is characterised in that including TRT pedestal
(01) and vibrating power-generation unit,
The vibrating power-generation unit include cantilever beam (04), the first magnetic mass (09), the second magnetic mass (03) and
The piezoelectric (05) on cantilever beam (04) surface is pasted onto, cantilever beam fixing end (06) is fixed in described cantilever beam (04) one end,
The cantilever beam fixing end (06) is secured by bolts on TRT pedestal (01), and cantilever beam (04) other end is certainly
By holding, the first magnetic mass (09) is fixed along the centrifugal direction of tire Pivot axle (10), cantilever beam fixing end (06),
First magnetic mass (09) opposite slightly to the right or left certain distance fixes the second magnetic mass (03), the second magnetic mass
(03) in the horizontal direction and it is fixed on by the second magnetic mass position adjustments screw thread (07) on balance mass block (08), it is described
Balance mass block (08) is secured by bolts in TRT pedestal (01) one end.
2. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
The TRT also includes detection unit (12), and the detection unit (12) is secured by bolts in TRT pedestal (01)
The other end, the detection unit (12) include voltage detector, acceleration detector and blue-teeth data transmission equipment, the voltage
Detector is used for the output voltage for detecting piezoelectric (05), and the data of voltage detector collection are stored in voltage detector sheet
Body, the acceleration detector is used for the acceleration for detecting tire (13), and the data of acceleration detector collection pass through bluetooth
Data transfer equipment transmits computer.
3. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 2, it is characterised in that
The TRT pedestal (01) connects vibrating power-generation unit and detection unit (12), and then TRT pedestal (01) passes through U
Type groove is fixed with wheel hub.
4. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
The TRT pedestal (01) is shaped as rectangle, and rectangular long side is provided with groove so that TRT pedestal
(01) the different two parts of width are formed, two long sides of narrower width are provided with the parallel cantilever beam position fixed ends regulation of two rows
Bolt (11), for adjusting cantilever beam fixing end (06) position, two long sides of wider width are provided with the second parallel magnetic of two rows
Property gauge block fixing end bolt hole (02), for adjusting second magnetic mass fixing end (08) position.
5. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
The piezoelectric (05) is ceramic material.
6. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
The material of the first magnetic mass (09) and the second magnetic mass (03) is strong permanent magnets.
7. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
The material of the cantilever beam (04) is stainless steel.
8. the automobile tire Non-Linear Vibration TRT based on centrifugal forces affect as claimed in claim 1, it is characterised in that
Adjustable centrifugation distance l ' be present to tire Pivot axle (10) in the center of gravity of the first magnetic mass (09).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551273A (en) * | 2018-04-28 | 2018-09-18 | 忻州师范学院 | A kind of beam type electromagnetism-friction-Piezoelectric anisotropy vibration energy collector |
| CN109655097A (en) * | 2018-12-25 | 2019-04-19 | 西北工业大学 | Multistable energy capture experimental rig in a kind of rotating environment |
| CN109660148A (en) * | 2019-01-21 | 2019-04-19 | 天津大学 | A kind of rotating machinery broadband piezoelectric energy collection method |
| CN114221575A (en) * | 2021-12-09 | 2022-03-22 | 江苏大学 | Bistable rotation random resonance energy collector and centrifugal distance optimization matching method |
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| CN1886842A (en) * | 2003-12-29 | 2006-12-27 | 倍耐力轮胎公司 | Method and system for generating electrical energy within a vehicle tyre |
| US7808158B1 (en) * | 2007-09-27 | 2010-10-05 | The United States Of America As Represented By The Secretary Of The Navy | Flow driven piezoelectric energy harvesting device |
| CN104393787A (en) * | 2014-11-11 | 2015-03-04 | 厦门大学 | Rotary piezoelectric cantilever energy harvester |
| CN104412504A (en) * | 2012-05-04 | 2015-03-11 | 帝国创新有限公司 | Power generation device |
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| CN1886842A (en) * | 2003-12-29 | 2006-12-27 | 倍耐力轮胎公司 | Method and system for generating electrical energy within a vehicle tyre |
| US7808158B1 (en) * | 2007-09-27 | 2010-10-05 | The United States Of America As Represented By The Secretary Of The Navy | Flow driven piezoelectric energy harvesting device |
| CN104412504A (en) * | 2012-05-04 | 2015-03-11 | 帝国创新有限公司 | Power generation device |
| CN104393787A (en) * | 2014-11-11 | 2015-03-04 | 厦门大学 | Rotary piezoelectric cantilever energy harvester |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108551273A (en) * | 2018-04-28 | 2018-09-18 | 忻州师范学院 | A kind of beam type electromagnetism-friction-Piezoelectric anisotropy vibration energy collector |
| CN109655097A (en) * | 2018-12-25 | 2019-04-19 | 西北工业大学 | Multistable energy capture experimental rig in a kind of rotating environment |
| CN109660148A (en) * | 2019-01-21 | 2019-04-19 | 天津大学 | A kind of rotating machinery broadband piezoelectric energy collection method |
| CN114221575A (en) * | 2021-12-09 | 2022-03-22 | 江苏大学 | Bistable rotation random resonance energy collector and centrifugal distance optimization matching method |
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