CN111551816A - Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof - Google Patents
Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof Download PDFInfo
- Publication number
- CN111551816A CN111551816A CN202010558003.2A CN202010558003A CN111551816A CN 111551816 A CN111551816 A CN 111551816A CN 202010558003 A CN202010558003 A CN 202010558003A CN 111551816 A CN111551816 A CN 111551816A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric material
- power generation
- fixed
- generation performance
- excitation
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The invention discloses a test bed for testing the power generation performance of a gyromagnetic piezoelectric material and a test method thereof.A output shaft of a speed regulating motor is connected with a transmission shaft; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A; the piezoelectric material is electrically connected with the oscilloscope through a lead; the measuring point of the laser vibration meter is positioned at the free end of the piezoelectric material; the invention takes the speed regulating motor as a power source to drive the magnet A on the excitation disc to generate a rotating magnetic field, and takes the magnetic force between the rotating magnetic field and the magnet B as an excitation force to vibrate the piezoelectric material to generate electric energy, thereby facilitating the free adjustment of important test parameters such as excitation frequency, amplitude and the like, having strong practicability and having important significance for the relevant research on the aspect of the power generation performance of the piezoelectric material.
Description
Technical Field
The invention relates to the field of piezoelectric material power generation performance test equipment, in particular to a rotating magnetic type piezoelectric material power generation performance test bench and a test method thereof.
Background
Nowadays, people want to use various methods to collect energy available in living environment in order to deal with the jiong environment in which energy is increasingly in short supply. However, the vibration energy is ubiquitous in our daily life, and compared with other forms of energy, the vibration energy has many advantages of high energy density, cleanness, no pollution and the like, so that the collection technology of the vibration energy is widely researched by scientists.
The method for collecting the vibration energy mainly utilizes the effects of static electricity, electromagnetism, piezoelectricity and the like, wherein the piezoelectricity is used for collecting the vibration energy through the positive piezoelectric effect of a piezoelectric material, the basic principle is that the vibration energy is used for causing the piezoelectric material to resonate, the piezoelectric material is deformed to a certain degree, the electric dipole moment in the piezoelectric material is shortened due to compression, and the piezoelectric material can generate equal positive and negative charges on the opposite surfaces of the material to resist the change, so that the vibration energy is converted into the electric energy to be collected.
The power generation performance of the vibration energy collecting device manufactured by using the piezoelectric effect of the piezoelectric material is influenced by various factors, such as the level of the excitation frequency, the amplitude, the external dimension of the piezoelectric ceramic and the like, and each factor has different influences on the power generation performance of the piezoelectric material, even the superposition of different influencing factors may have coupling effects of different degrees on the power generation performance of the piezoelectric material.
Therefore, a test bed for testing the power generation performance of the gyromagnetic piezoelectric material is needed, and the test bed is used for researching that different influence factors have important significance and value on the related research of the power generation performance of the piezoelectric material.
Disclosure of Invention
The invention aims to provide a test bed for testing the power generation performance of a gyromagnetic piezoelectric material and a test method thereof, aiming at overcoming the defects and shortcomings of the prior art, so that the test bed and the test method are used for testing the power generation performance of the piezoelectric material, and have important values and significance for researching the problems of how to improve the energy collection efficiency of a piezoelectric vibration energy collector and the like.
In order to achieve the purpose, the invention adopts the technical scheme that: the device comprises a base, an excitation device, a clamping device and a measuring device; the vibration excitation device and the clamping device are fixed on the base;
the excitation device comprises a motor speed regulator, a speed regulating motor, an excitation disc and a magnet A; the motor speed regulator is electrically connected with the speed regulating motor; an output shaft of the speed regulating motor is connected with one end of the transmission shaft through a coupler; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A;
the clamping device comprises a clamp, a connecting piece and a magnet B; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A;
the measuring device comprises a laser vibration meter and an oscilloscope; the piezoelectric material is electrically connected with the oscilloscope through a lead; the laser vibration meter is fixed on the laser vibration meter bracket; the measuring point of the laser vibration meter is positioned at the free end of the piezoelectric material;
further, the motor speed regulator is fixed on the base through a bolt;
furthermore, the speed regulating motor is fixed on the motor bracket; the motor bracket is fixed on the base through a bolt;
furthermore, two sides of the transmission shaft are arranged on a bearing support through bearings, and the bearing support is fixed on the base through bolts;
furthermore, the excitation disc is fixed on the middle shaft section of the transmission shaft through a flange plate;
furthermore, a plurality of magnets A are embedded on the excitation disc and uniformly distributed along the circumferential direction, the magnetic pole surfaces of the magnets A are uniformly distributed, and the magnetic pole surfaces of the magnets A with the same name point to or depart from the circle center;
further, the clamp comprises a clamp base and a clamp pressing plate; a waist-shaped hole is formed in the clamp base; the clamp base penetrates through the waist-shaped hole through a bolt and is fixed on the base; the clamp pressing plate is fixed on the clamp base;
further, the measuring point of the laser vibrometer is located right above the piezoelectric material.
The invention also discloses a test method of the test bed for testing the power generation performance of the gyromagnetic piezoelectric material, which comprises the following steps:
1) installing and adjusting an excitation device, a clamping device and a measuring device;
2) adjusting appropriate test parameters such as the number of the magnets A, the distance between the magnets A and the magnets B, the rotating speed of the motor and the like;
3) observing the test state of the piezoelectric material in real time, and recording related test data;
4) adjusting related test parameters, developing related comparison tests, and testing the power generation performance of the piezoelectric material under different conditions;
5) and analyzing and comparing the test data to finally obtain a corresponding test conclusion.
The invention utilizes the speed regulating motor to drive the excitation disc to rotate, and the magnet A on the excitation disc and the magnet B can generate a magnetic force which periodically changes along with time along with the rotation of the excitation disc, namely, a non-contact excitation force which periodically changes along with time is applied to the free end of the piezoelectric material, so as to drive the piezoelectric material to vibrate and generate electric energy; recording data such as amplitude, motion law and the like of the piezoelectric material in the test process by using a laser vibration meter, and recording data of electrical signals such as voltage and current characteristics and the like generated by the piezoelectric material by using an oscilloscope; and finally, analyzing the power generation performance of the piezoelectric material according to the collected test data.
The invention can change the size of the excitation frequency by adjusting the rotating speed of the speed regulating motor or the number of the magnets A on the excitation disc; the position of the clamp can be adjusted by selecting the magnet B with different magnetism or utilizing the waist-shaped hole on the clamp, so that the magnetic force between the magnet A and the magnet B is changed, and the amplitude of the free end of the piezoelectric material is further changed.
After adopting the structure, the invention has the beneficial effects that: the rotating magnetic type test bed for testing the power generation performance of the piezoelectric material, disclosed by the invention, has the advantages that the speed regulating motor is used as a power source to drive the magnet A on the excitation disc to generate a rotating magnetic field, and the magnetic force between the rotating magnetic field and the magnet B is used as an excitation force to enable the piezoelectric material to vibrate to generate electric energy, so that the free adjustment of important test parameters such as excitation frequency and amplitude is convenient, the practicability is strong, the relevant research on the power generation performance of the piezoelectric material is significant, and the test bed has the advantages of simple structure, low cost, easiness in manufacturing, convenience in control and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the excitation device;
fig. 3 is a schematic structural view of the clamping device.
Description of reference numerals:
1. a base; 2. a motor speed regulator; 3. a motor bracket; 4. a speed-regulating motor; 5. a coupling; 6. a magnet A; 7. exciting a disc; 8. a flange plate; 9. a bearing support; 10. a bearing; 11. a drive shaft; 12. a piezoelectric material; 13. a clamp; 14. a laser vibrometer support; 15. a laser vibrometer; 16. an oscilloscope; 17. a magnet B; 18. a connecting member; 13-1, a clamp base; 13-2, clamping a clamp plate; 13-3, locking screws.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the technical solution adopted by the present embodiment is: the device comprises a base 1, an excitation device, a clamping device and a measuring device;
referring to fig. 1-2, the excitation device comprises a motor speed regulator 2, a speed regulating motor 4, an excitation disc 7 and a magnet A6; the motor speed regulator 2 is fixed on the base 1 through a bolt; the motor speed regulator 2 is electrically connected with the speed regulating motor 4; the speed regulating motor 4 is fixed on the motor bracket 3 through a bolt, and the motor bracket 3 is fixed on the base 1 through a bolt; an output shaft of the speed regulating motor 4 is connected with a transmission shaft 11 through a coupler 5, bearings 10 are installed at two ends of the transmission shaft 11, the bearings 10 are installed in bearing supports 9, the bearing supports 9 are installed on the base 1 through bolts, and the excitation disc 7 is installed on a middle shaft section of the transmission shaft 11 through a flange plate 8; the magnets A6 are embedded on the excitation disc 7 and are uniformly and equidistantly distributed along the circumferential direction, the magnetic pole faces of the magnets A6 are uniformly distributed, and the magnetic pole faces with the same name point to or depart from the circle center.
Referring to fig. 1 and 3, the clamping device includes a clamp 13, a connecting member 18, and a magnet B17; the clamp 13 comprises a clamp base 13-1 and a clamp pressing plate 13-2; the clamp base 13-1 is fixed on the base 1 through bolts, the position of the clamp base 13-1 is adjusted through a kidney-shaped hole, the clamp pressing plate 13-2 is fixed on the clamp base 13-1 and is clamped and tightly pressed on the electric material 12 through a locking screw 13-3, a connecting piece 18 is fixed at the free end of the electric material 12, a magnet B17 is fixed at the free end of the electric material 12 through the connecting piece 18, and the opposite magnetic pole faces of the magnet B17 and the magnet A6 are ensured to be the same magnetic pole;
referring to fig. 1, the measuring device includes a laser vibration meter 15 and an oscilloscope 16; the piezoelectric material 12 is connected with the oscilloscope 16 through two wires for recording data such as voltage, current and the like generated by the piezoelectric material 12, the laser vibration meter 15 is fixed on the laser vibration meter support 14, the position of the laser vibration meter support 14 is adjusted, and the measuring point of the laser vibration meter 15 is ensured to be positioned right above the free end of the piezoelectric material 12;
the speed regulating motor 4 drives the excitation disc 7 to rotate, the magnets A6 which are uniformly and equidistantly distributed along the circumferential direction on the excitation disc 7 rotate along with the excitation disc 7, at the moment, a magnetic force which changes periodically and continuously along with time can be generated between the magnets A6 and the magnets B17 which are fixed at the free end of the piezoelectric material 12, namely, a periodically-changing non-contact excitation force acts on the free end of the piezoelectric material 12, and the piezoelectric material 12 is driven to vibrate to generate electric energy.
The method for testing the power generation performance of the piezoelectric material by adopting the rotating magnetic type test bed for testing the power generation performance of the piezoelectric material comprises the following specific steps of:
1. installing and adjusting an excitation device, a clamping device and a measuring device;
2. adjusting the number of the magnets A6 according to the requirement of the test, adjusting the position of the clamp 13 by utilizing the waist-shaped hole on the clamp base 13-1 to adjust the distance between the magnets A6 and the magnets B17, opening the speed regulating motor 4, and adjusting the position of the magnet B17 according to a formulan=60f/NAdjusting the rotating speed of the speed regulating motor 4, wherein N is the rotating speed of the speed regulating motor 4, f is the resonance frequency to be applied, and N is the number of the magnets A6 on the excitation disc 7;
3. observing the test state of the piezoelectric material 12 in real time, and recording test data such as relevant excitation frequency and amplitude and electrical signals collected by the oscilloscope 16 in the test process;
4. according to the requirements of the test, adjusting one or more different test parameters, such as the excitation frequency, the distance between the magnet A6 and the magnet B17, the test temperature, the piezoelectric materials 12 with different external dimensions and the like, carrying out a related contrast test, testing the power generation performance of the piezoelectric materials 12 under different conditions, and collecting and recording related data;
5. and comparing and analyzing the related test data to finally obtain a corresponding test conclusion.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A test bed for testing the power generation performance of a gyromagnetic piezoelectric material is characterized by comprising a base, an excitation device, a clamping device and a measuring device; the vibration excitation device and the clamping device are fixed on the base;
the excitation device comprises a motor speed regulator, a speed regulating motor, an excitation disc and a magnet A; the motor speed regulator is electrically connected with the speed regulating motor; an output shaft of the speed regulating motor is connected with one end of the transmission shaft through a coupler; the excitation disc is fixed on the transmission shaft; the excitation disc is provided with a plurality of magnets A;
the clamping device comprises a clamp, a connecting piece and a magnet B; the fixed end of the piezoelectric material is clamped on the clamp, and the magnet B is fixed at the free end of the piezoelectric material through the connecting piece; the magnet B is opposite to the same-name magnetic pole surface of the magnet A;
the measuring device comprises a laser vibration meter and an oscilloscope; the piezoelectric material is electrically connected with the oscilloscope through a lead; the laser vibration meter is fixed on the laser vibration meter bracket; the measuring point of the laser vibrometer is at the free end of the piezoelectric material.
2. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the motor speed regulator is fixed on the base through a bolt.
3. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the speed regulating motor is fixed on the motor support; the motor support is fixed on the base through a bolt.
4. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein two sides of the transmission shaft are mounted on bearing supports through bearings, and the bearing supports are fixed on the base through bolts.
5. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1, wherein the excitation disk is fixed on the middle shaft section of the transmission shaft through a flange.
6. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material as claimed in claim 1 or 5, wherein a plurality of magnets A are embedded on the excitation disc and uniformly distributed along the circumferential direction, the magnetic pole faces of the magnets A are uniformly distributed, and the same magnetic pole faces of the magnets A point to or depart from the center of a circle.
7. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material according to claim 1, wherein the clamp comprises a clamp base and a clamp pressing plate; a waist-shaped hole is formed in the clamp base; the clamp base penetrates through the waist-shaped hole through a bolt and is fixed on the base; the clamp pressing plate is fixed on the clamp base.
8. The test bed for testing the power generation performance of the gyromagnetic piezoelectric material according to claim 1, wherein the measurement point of the laser vibrometer is located right above the piezoelectric material.
9. The method for testing a test bed for testing the power generation performance of a gyromagnetic piezoelectric material as claimed in claims 1 to 8, comprising the steps of:
1) installing and adjusting an excitation device, a clamping device and a measuring device;
2) adjusting appropriate test parameters such as the number of the magnets A, the distance between the magnets A and the magnets B, the rotating speed of the motor and the like;
3) observing the test state of the piezoelectric material in real time, and recording related test data;
4) adjusting related test parameters, developing related comparison tests, and testing the power generation performance of the piezoelectric material under different conditions;
5) and analyzing and comparing the test data to finally obtain a corresponding test conclusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010558003.2A CN111551816A (en) | 2020-06-18 | 2020-06-18 | Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010558003.2A CN111551816A (en) | 2020-06-18 | 2020-06-18 | Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111551816A true CN111551816A (en) | 2020-08-18 |
Family
ID=72003499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010558003.2A Pending CN111551816A (en) | 2020-06-18 | 2020-06-18 | Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111551816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895113A (en) * | 2022-03-24 | 2022-08-12 | 四川大学 | Non-contact magnetic rotating mechanism for piezoelectric film energy collection test |
-
2020
- 2020-06-18 CN CN202010558003.2A patent/CN111551816A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895113A (en) * | 2022-03-24 | 2022-08-12 | 四川大学 | Non-contact magnetic rotating mechanism for piezoelectric film energy collection test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102025288B (en) | Giant magnetostrictive actuator with permanet torque output and control method thereof | |
| Wang et al. | A rotational piezoelectric energy harvester based on trapezoid beam: Simulation and experiment | |
| Zhao et al. | Design and experimental research of a novel inchworm type piezo-driven rotary actuator with the changeable clamping radius | |
| LU102163B1 (en) | Multifunctional rotating test bench for magnetically-excited vibration energy harvesting | |
| CN111551816A (en) | Test bed for testing power generation performance of gyromagnetic piezoelectric material and test method thereof | |
| KR101251412B1 (en) | Magnetically driven the development device generating unit using piezo-composite materials | |
| CN102901612B (en) | All-angle and distance-adjustable non-contact excitation experiment platform | |
| CN212321754U (en) | Test bed for testing power generation performance of gyromagnetic piezoelectric material | |
| Rizal et al. | Design and experimental study of a piezoelectric energy harvester embedded in a rotating spindle excited by magnetic force | |
| CN106014887A (en) | Suspension self-excitation runner piezoelectric beam energy harvester | |
| Yu et al. | A novel multimodal piezoelectric energy harvester with rotating-DOF for low-frequency vibration | |
| CN207751614U (en) | A kind of mode of wireless transmission piezoelectricity two is to dynamometer | |
| CN107359814B (en) | Rotary piezoelectric wind driven generator | |
| CN102983779B (en) | Piezoelectric vibration energy capture device of magnetic coupling | |
| CN109238689B (en) | Rotor torsional vibration exciter | |
| Ding et al. | A piezoelectric energy harvester using an arc-shaped piezoelectric cantilever beam array | |
| CN113890300B (en) | Wide range vibration energy harvester based on asymmetric-biplane springs | |
| Wang et al. | An energy harvesting type ultrasonic motor | |
| CN106197964B (en) | Magnetic suspension dual-rotor structure testing device | |
| CN109831119B (en) | Magnetic excitation rotary piezoelectric generator | |
| CN111157378A (en) | Piezoelectric multi-field coupling induced vibration fatigue experimental device and test method | |
| CN114323656A (en) | Mechatronic rotary excitation device capable of generating high-low frequency excitation force simultaneously | |
| Ren et al. | Design, optimization and test of an electromagnetic vibration energy harvester for industrial wireless sensor networks | |
| Yu et al. | Experiments and Analysis of a Nonlinear Sickle‐Shaped Cantilever Beam Piezoelectric Energy Harvester for Wind Energy Harvesting | |
| CN209283065U (en) | A kind of kinetic energy collecting sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |