CN103684048A - Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof - Google Patents
Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof Download PDFInfo
- Publication number
- CN103684048A CN103684048A CN201410005554.0A CN201410005554A CN103684048A CN 103684048 A CN103684048 A CN 103684048A CN 201410005554 A CN201410005554 A CN 201410005554A CN 103684048 A CN103684048 A CN 103684048A
- Authority
- CN
- China
- Prior art keywords
- mass
- permanent magnet
- magnet
- section
- vertical bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000010030 laminating Methods 0.000 title abstract 3
- 238000005452 bending Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 27
- 239000002131 composite material Substances 0.000 claims description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Images
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention provides a resilient mechanism, which consists of a supporting seat, an arc resilient beam and a mass block; the arc resilient beam consists of straight sections and curved sections; the axial direction of each straight section is parallel to that of the mass block, a plurality of straight sections are uniformly distributed along the circumferential direction of the mass block, and the distance from each straight section to the central axis of the mass block is greater than the radius of the mass block; the outer end of each curved section is connected with the outer wall of the mass block, and a plane formed by the curved sections and the straight sections is overlapped with the axial cross section of the mass block. The invention also provides a laminating magnetoelectric-type broadband three-dimensional vibrating energy collector based on the resilient mechanism. The laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and the resilient mechanism have the beneficial effects that the response range of the vibrating energy collector to the external vibrating excitation can be enlarged, and the energy collection efficiency of the vibrating energy collector can be improved.
Description
Technical field
The present invention relates to a kind of vibrational energy harvester, relate in particular to a kind of laminated magneto-electric wideband three-dimensional vibrating energy collecting device and elastic mechanism thereof.
Background technology
Along with the fast development of MEMS technology, micropower electronic product and microminiature wireless sensing etc. has also obtained significant progress; In order to meet the self energizing demand of micropower electronic product, the research of microminiature energy collecting device has now become forward position focus.
Vibrational energy is ubiquitous a kind of energy in environment, comprises artificially, and as automobile vibration, various industrial machinery vibrations etc., and the vibration naturally existing, as wind-induced vibration etc., and vibrational energy has advantages of that energy density is large; At present, the feasible vibrational energy acquisition mode of cutting mainly contains four kinds of electrostatic (electrostatic), electromagnetic type (electromagnetic), piezoelectric type (piezoelectric) and magneto-electrics (magnetoelectric), on this basis, researcher has designed many vibration energy collectors in succession, as: electrostatic electricity energy harvester (Chinese invention patent CN1547312A, US Patent No. 7112911B2 etc.); Electromagnetic energy harvester (Chinese invention patent CN1877973A, CN101075773A, CN1652440A, CN1604436A etc.); Piezoelectric type energy harvester (Chinese invention patent CN2834010Y, CN201054553Y, US Patent No. 7345407B2 etc.); Magneto-electric electricity energy harvester (Chinese invention patent CN101404468A etc.).
Casting aside the transduction mechanism of vibration energy collector does not talk, existing vibration energy collector all exists a common problem, can only gather the vibrational energy of a certain specific direction, and in actual environment, direction of vibration has polytropism conventionally, or even three-dimensional or along with the time constantly changes, the mode that traditional harvester gathers a certain specific direction vibrational energy has just seemed inefficiency, has greatly restricted the application of vibration energy collector in engineering reality.
Summary of the invention
For the problem in background technology, the present invention proposes a kind of elastic mechanism, its structure is: described elastic mechanism is comprised of bearing, many arc elastic beams and mass; Being shaped as of described mass is cylindrical; Described arc elastic beam is comprised of vertical bar section and bending section, and vertical bar section and bending section are overall structure; The axially parallel of the axial and mass of vertical bar section, the vertical bar section on many arc elastic beams is circumferentially uniformly distributed along mass, and the distance between vertical bar section and the central shaft of mass is greater than mass radius; The outer end of described bending section is connected with the outer wall of mass, and bending section and the formed plane of vertical bar section overlap with the shaft section of mass.
The principle of aforementioned structure is: the arc elastic beam in elastic mechanism of the present invention is comprised of vertical bar section and bending section, vertical bar section can respond to the vibration on any direction within the scope of mass cross section elastic mechanism, bending section can respond to the vibration on mass axial direction elastic mechanism, and this just makes elastic mechanism possess and responds the ability that a plurality of dimensions are vibrated; Than prior art, the solution of the present invention can make the response range of vibration energy collector be expanded, and improves the efficiency of vibration energy collector collecting energy.
Based on aforementioned schemes, the present invention proposes a kind of laminated magneto-electric wideband three-dimensional vibrating energy collecting device, its structure is: described laminated magneto-electric wideband three-dimensional vibrating energy collecting device is comprised of elastic mechanism, pedestal, support, two permanent magnets and stratiform composite transducer;
The structure of described elastic mechanism is: described elastic mechanism is comprised of bearing, many arc elastic beams and mass; Being shaped as of described mass is cylindrical; Described arc elastic beam is comprised of vertical bar section and bending section, and vertical bar section and bending section are overall structure; The axially parallel of the axial and mass of vertical bar section, the vertical bar section on many arc elastic beams is circumferentially uniformly distributed along mass, and the distance between vertical bar section and the central shaft of mass is greater than mass radius; The outer end of described bending section is connected with the outer wall of mass, and bending section and the formed plane of vertical bar section overlap with the shaft section of mass;
Bearing and support are all arranged on pedestal, the first permanent magnet is arranged on support, the second permanent magnet is arranged on the outer face of mass, install when static, the first permanent magnet is relative with the second permanent magnet position forms closed air-gap field, stratiform composite transducer is arranged on the outer face of the first permanent magnet in air-gap field, between stratiform composite transducer and the second permanent magnet, leaves gap.
The operation principle of laminated magneto-electric wideband three-dimensional vibrating energy collecting device of the present invention is: the relative position of the first permanent magnet and stratiform composite transducer and pedestal keeps fixing, the second permanent magnetism physical efficiency is externally vibrated under vibrational excitation, when external vibration incentive action is to after on pedestal, stratiform composite transducer and magnetic circuit produce relative motion, thereby stratiform composite transducer is experienced the magnetic field of variation and caused pressing magnetic that corresponding deformation occurs mutually, this deformation effect is to the piezoelectric layer in stratiform composite transducer and produce electricity output; Laminated magneto-electric wideband three-dimensional vibrating energy collecting device of the present invention is a kind of new vibration energy collector that utilizes aforesaid elastic mechanism to obtain, have benefited from the ability of elastic mechanism to a plurality of dimension vibratory responses, the response dimension of laminated magneto-electric wideband three-dimensional vibrating energy collecting device of the present invention has also obtained expansion, and the efficiency of energy acquisition is higher.
Preferably, between described the first permanent magnet and support, by a contiguous block, connect, described contiguous block adopts non-magnetic material to make.
In order to improve the output of device, the present invention has also done following improvement: described permanent magnet is spliced by two blocks of magnet, wherein the cross section of the first magnet is circular, the cross section of the second magnet is annular, the first magnet is socketed in the endoporus of the second magnet, and the polarity of the first magnet outer face polarity and the second magnet outer face is contrary; Install when static, the first magnet on the first permanent magnet is contrary with the first magnet polarity on the second permanent magnet, position is relative, and the second magnet on the first permanent magnet is contrary with the second magnet polarity on the second permanent magnet, position is relative.Adopt after aforementioned improved, just make the polarity of the magnetic field of the intersection of two blocks of magnet on same permanent magnet can occur sudden change, when greatly improving air-gap field magnetic field gradient, rate of change of magnetic while also making stratiform composite transducer and magnetic circuit produce relative motion is improved, and finally makes stratiform composite transducer can obtain larger electricity output.
For the ease of regulating two gaps between permanent magnet, the present invention has also done following improvement: described support can slide on pedestal.
In order to prevent that the second permanent magnet from colliding stratiform composite transducer while vibrating; the present invention has also done following improvement: on described the first permanent magnet outer face, be provided with fender bracket, the gap between fender bracket outer end and the second permanent magnet is less than the gap between stratiform composite transducer and the second permanent magnet.
Preferably, layered composite transducer is comprised of two-layer magnetostrictive material layer and one deck piezoelectric material layer; Two-layer magnetostrictive material layer is layered in respectively the upper and lower sides of piezoelectric material layer.
In order further to improve the electricity output of stratiform composite transducer, the present invention has also done following improvement: described magnetostrictive material layer is spliced by polylith magnetostrictive material sheet, and the magnetostrictive material sheet quantity of piezoelectric material layer both sides is identical and position is corresponding one by one.
Useful technique effect of the present invention is: expanded the response range of vibration energy collector to outside vibrational excitation, improved collecting efficiency when vibration energy collector gathers energy.
Accompanying drawing explanation
Fig. 1, structural representation of the present invention;
Fig. 2, permanent magnet outer face schematic diagram;
Fig. 3, stratiform composite transducer structural representation;
In figure, the corresponding parts of each mark are respectively: bearing 1, arc elastic beam 2, vertical bar section 2-1, bending section 2-2, mass 3, pedestal 4, support 5, permanent magnet 6, stratiform composite transducer 7, magnetostrictive material layer 7-1, piezoelectric material layer 7-2, magnetostrictive material sheet 7-3, fender bracket 8, the first magnet 9, the second magnet 10.
Embodiment
An elastic mechanism, its structure is: described elastic mechanism is comprised of bearing 1, many arc elastic beams 2 and mass 3; Being shaped as of described mass 3 is cylindrical; Described arc elastic beam 2 is comprised of vertical bar section 2-1 and bending section 2-2, and vertical bar section 2-1 and bending section 2-2 are overall structure; The axially parallel of the axial and mass 3 of vertical bar section 2-1, the vertical bar section 2-1 on many arc elastic beams 2 is circumferentially uniformly distributed along mass 3, and the distance between vertical bar section 2-1 and the central shaft of mass 3 is greater than mass 3 radiuses; The outer end of described bending section 2-2 is connected with the outer wall of mass 3, and bending section 2-2 and the formed plane of vertical bar section 2-1 overlap with the shaft section of mass 3.
A laminated magneto-electric wideband three-dimensional vibrating energy collecting device, its structure is: described laminated magneto-electric wideband three-dimensional vibrating energy collecting device is comprised of elastic mechanism, pedestal 4, support 5, two permanent magnets 6 and stratiform composite transducer 7;
The structure of described elastic mechanism is: described elastic mechanism is comprised of bearing 1, many arc elastic beams 2 and mass 3; Being shaped as of described mass 3 is cylindrical; Described arc elastic beam 2 is comprised of vertical bar section 2-1 and bending section 2-2, and vertical bar section 2-1 and bending section 2-2 are overall structure; The axially parallel of the axial and mass 3 of vertical bar section 2-1, the vertical bar section 2-1 on many arc elastic beams 2 is circumferentially uniformly distributed along mass 3, and the distance between vertical bar section 2-1 and the central shaft of mass 3 is greater than mass 3 radiuses; The outer end of described bending section 2-2 is connected with the outer wall of mass 3, and bending section 2-2 and the formed plane of vertical bar section 2-1 overlap with the shaft section of mass 3;
Bearing 1 and support 5 are all arranged on pedestal 4, the first permanent magnet 6 is arranged on support 5, the second permanent magnet 6 is arranged on the outer face of mass 3, install when static, the first permanent magnet 6 is relative with the second permanent magnet 6 positions forms closed air-gap field, stratiform composite transducer 7 is arranged on the outer face of the first permanent magnet (6) in air-gap field, between stratiform composite transducer 7 and the second permanent magnet 6, leaves gap.
Further, between described the first permanent magnet 6 and support 5, by a contiguous block, connect, described contiguous block adopts non-magnetic material to make.
Further, described permanent magnet 6 is spliced by two blocks of magnet, and wherein the cross section of the first magnet is circular, and the cross section of the second magnet is annular, the first magnet is socketed in the endoporus of the second magnet, and the polarity of the first magnet outer face polarity and the second magnet outer face is contrary; Install when static, the first magnet on the first permanent magnet 6 is contrary with the first magnet polarity on the second permanent magnet 6, position is relative, and the second magnet on the first permanent magnet 6 is contrary with the second magnet polarity on the second permanent magnet 6, position is relative.
Further, described support 5 can slide on pedestal 4.
Further, on described the first permanent magnet 6 outer faces, be provided with fender bracket, the gap between fender bracket outer end and the second permanent magnet 6 is less than the gap between stratiform composite transducer 7 and the second permanent magnet 6.
Further, layered composite transducer 7 is comprised of two-layer magnetostrictive material layer 7-1 and one deck piezoelectric material layer 7-2; Two-layer magnetostrictive material layer 7-1 is layered in respectively the upper and lower sides of piezoelectric material layer 7-2.
Further, described magnetostrictive material layer 7-1 is spliced by polylith magnetostrictive material sheet, and the magnetostrictive material sheet quantity of piezoelectric material layer 7-2 both sides is identical and position is corresponding one by one.
Claims (8)
1. an elastic mechanism, is characterized in that: described elastic mechanism is comprised of bearing (1), many arc elastic beams (2) and mass (3); Being shaped as of described mass (3) is cylindrical; Described arc elastic beam (2) is comprised of vertical bar section (2-1) and bending section (2-2), and vertical bar section (2-1) and bending section (2-2) are overall structure; The axially parallel of the axial and mass (3) of vertical bar section (2-1), vertical bar section (2-1) on many arc elastic beams (2) is circumferentially uniformly distributed along mass (3), and the distance between vertical bar section (2-1) and the central shaft of mass (3) is greater than mass (3) radius; The outer end of described bending section (2-2) is connected with the outer wall of mass (3), and bending section (2-2) and the formed plane of vertical bar section (2-1) overlap with the shaft section of mass (3).
2. a laminated magneto-electric wideband three-dimensional vibrating energy collecting device that adopts elastic mechanism described in claim 1, is characterized in that: described laminated magneto-electric wideband three-dimensional vibrating energy collecting device is comprised of elastic mechanism, pedestal (4), support (5), two permanent magnets (6) and stratiform composite transducer (7);
The structure of described elastic mechanism is: described elastic mechanism is comprised of bearing (1), many arc elastic beams (2) and mass (3); Being shaped as of described mass (3) is cylindrical; Described arc elastic beam (2) is comprised of vertical bar section (2-1) and bending section (2-2), and vertical bar section (2-1) and bending section (2-2) are overall structure; The axially parallel of the axial and mass (3) of vertical bar section (2-1), vertical bar section (2-1) on many arc elastic beams (2) is circumferentially uniformly distributed along mass (3), and the distance between vertical bar section (2-1) and the central shaft of mass (3) is greater than mass (3) radius; The outer end of described bending section (2-2) is connected with the outer wall of mass (3), and bending section (2-2) and the formed plane of vertical bar section (2-1) overlap with the shaft section of mass (3);
Bearing (1) and support (5) are all arranged on pedestal (4), the first permanent magnet (6) is arranged on support (5), the second permanent magnet (6) is arranged on the outer face of mass (3), install when static, the first permanent magnet (6) is relative with the second permanent magnet (6) position forms closed air-gap field, stratiform composite transducer (7) is arranged on the outer face of the first permanent magnet (6) in air-gap field, between stratiform composite transducer (7) and the second permanent magnet (6), leaves gap.
3. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 2, is characterized in that: between described the first permanent magnet (6) and support (5), by a contiguous block, connect, described contiguous block adopts non-magnetic material to make.
4. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 2, it is characterized in that: described permanent magnet (6) is spliced by two blocks of magnet, wherein the cross section of the first magnet is circular, the cross section of the second magnet is annular, the first magnet is socketed in the endoporus of the second magnet, and the polarity of the first magnet outer face polarity and the second magnet outer face is contrary; Install when static, the first magnet on the first permanent magnet (6) is contrary with the first magnet polarity on the second permanent magnet (6), position is relative, and the second magnet on the first permanent magnet (6) is contrary with the second magnet polarity on the second permanent magnet (6), position is relative.
5. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 2, is characterized in that: described support (5) can be in the upper slip of pedestal (4).
6. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 2; it is characterized in that: described the first permanent magnet (6) is provided with fender bracket on outer face, the gap between fender bracket outer end and the second permanent magnet (6) is less than the gap between stratiform composite transducer (7) and the second permanent magnet (6).
7. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 2, is characterized in that: layered composite transducer (7) is comprised of two-layer magnetostrictive material layer (7-1) and one deck piezoelectric material layer (7-2); Two-layer magnetostrictive material layer (7-1) is layered in respectively the upper and lower sides of piezoelectric material layer (7-2).
8. laminated magneto-electric wideband three-dimensional vibrating energy collecting device according to claim 7, it is characterized in that: described magnetostrictive material layer (7-1) is spliced by polylith magnetostrictive material sheet, the magnetostrictive material sheet quantity of piezoelectric material layer (7-2) both sides is identical and position is corresponding one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005554.0A CN103684048A (en) | 2014-01-07 | 2014-01-07 | Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005554.0A CN103684048A (en) | 2014-01-07 | 2014-01-07 | Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103684048A true CN103684048A (en) | 2014-03-26 |
Family
ID=50320602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410005554.0A Pending CN103684048A (en) | 2014-01-07 | 2014-01-07 | Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103684048A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767422A (en) * | 2015-05-07 | 2015-07-08 | 重庆大学 | Elastic beam for manufacturing vibration energy collector and vibration energy collector |
| CN107786123A (en) * | 2017-11-28 | 2018-03-09 | 西华师范大学 | A kind of multi-direction broadband energy collecting device using bent beam |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7928634B2 (en) * | 2008-04-22 | 2011-04-19 | Honeywell International Inc. | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester |
| CN102497133A (en) * | 2011-11-25 | 2012-06-13 | 河北工业大学 | Electromagnetic vibration generating device of permanent magnet and application thereof in vibration detection system |
| CN102891625A (en) * | 2012-09-27 | 2013-01-23 | 电子科技大学 | Magneto-electricity combined energy conversion device |
-
2014
- 2014-01-07 CN CN201410005554.0A patent/CN103684048A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7928634B2 (en) * | 2008-04-22 | 2011-04-19 | Honeywell International Inc. | System and method for providing a piezoelectric electromagnetic hybrid vibrating energy harvester |
| CN102497133A (en) * | 2011-11-25 | 2012-06-13 | 河北工业大学 | Electromagnetic vibration generating device of permanent magnet and application thereof in vibration detection system |
| CN102891625A (en) * | 2012-09-27 | 2013-01-23 | 电子科技大学 | Magneto-electricity combined energy conversion device |
Non-Patent Citations (1)
| Title |
|---|
| 岳喜海，杨进，文玉梅，李平，白小玲: "方向宽频磁电式振动能量采集器", 《仪器仪表学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767422A (en) * | 2015-05-07 | 2015-07-08 | 重庆大学 | Elastic beam for manufacturing vibration energy collector and vibration energy collector |
| CN107786123A (en) * | 2017-11-28 | 2018-03-09 | 西华师范大学 | A kind of multi-direction broadband energy collecting device using bent beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Al-Yafeai et al. | A state-of-the-art review of car suspension-based piezoelectric energy harvesting systems | |
| Khan et al. | Electromagnetic bridge energy harvester utilizing bridge’s vibrations and ambient wind for wireless sensor node application | |
| CN101404468B (en) | Vibration energy collector with piezomagnetic/piezoelectric composite energy conversion structure | |
| CN102013785A (en) | Thrust optimization design method for tubular permanent magnet synchronous linear motor | |
| Xie et al. | A study on a high efficient cylinder composite piezoelectric energy harvester | |
| CN103560640A (en) | Magneto-electricity/electromagnetic compound type low-frequency wideband vibration energy collector | |
| Ali et al. | Harvesting energy from galloping oscillations | |
| Yang et al. | Longitudinal and bending hybrid linear ultrasonic motor using bending PZT elements | |
| CN103050216A (en) | Electromagnetic actuator for active noise control for amorphous alloy transformers | |
| Iula et al. | FE analysis and experimental evaluation of the performance of a travelling wave rotary motor driven by high power ultrasonic transducers | |
| CN103684048A (en) | Laminating magnetoelectric-type broadband three-dimensional vibrating energy collector and resilient mechanism thereof | |
| CN103701363B (en) | A kind of multi-direction piezoelectric-electrcombinedc combinedc energy gathering apparatus | |
| Zhang et al. | A bending hybrid linear piezoelectric actuator using sectional excitation | |
| CN103994144B (en) | A kind of High-Speed Cylindrical Roller Bearing with self power generation monitoring device | |
| Xing et al. | A miniature cylindrical piezoelectric motor with an asymmetric vibrator | |
| Ordóñez Izquierdo et al. | Analysis of different cylindrical magnet and coil configurations for electromagnetic vibration energy harvesters | |
| Liu et al. | Miniaturization of a U-shape linear piezoelectric motor with double feet | |
| Nezami et al. | Improving durability of a vibration energy harvester using structural design optimization | |
| CN104022687B (en) | Based on the multi-direction broadband vibration energy gathering-device of self-excited vibration mechanism | |
| CN106337893B (en) | Reluctance type electromagnetism active vibration insulator | |
| CN203645577U (en) | Multidirectional piezoelectric-electromagnetic composite vibration energy collector | |
| Yu et al. | A new hybrid piezoelectric-electromagnetic micro vibration energy harvester | |
| CN106475295B (en) | A kind of inertial exciter based on twin coil single action magnet structure | |
| CN104811091B (en) | A kind of multi-direction vibration energy collector based on annular Halbach array | |
| Pirrotta et al. | Evaluation of the effect of preload force on resonance frequencies for a traveling wave ultrasonic motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |