CN109655097A - Multistable energy capture experimental rig in a kind of rotating environment - Google Patents
Multistable energy capture experimental rig in a kind of rotating environment Download PDFInfo
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- CN109655097A CN109655097A CN201811596964.1A CN201811596964A CN109655097A CN 109655097 A CN109655097 A CN 109655097A CN 201811596964 A CN201811596964 A CN 201811596964A CN 109655097 A CN109655097 A CN 109655097A
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- rotation
- multistable
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- energy capture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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- 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
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Abstract
The present invention relates to multistable energy capture experimental rigs in a kind of rotating environment comprising: experimental rig rack, moving parts, energy accumulator, signal acquisition and transmission assembly, control assembly and accessory part.Overall work schematic diagram is as shown in Figure 1.Driving power source using servo motor as rotary motion, motor output end are designed by spacer flanger and are connect with Plane of rotation, provided power for Plane of rotation, realize the movement of experimental rig different rotating speeds by shaft coupling and rotation axis connection, rotation axis.Top rotary part is connect by connecting plate with shake table simultaneously, and shake table provides different dynamic excitations.The invention device can set different rotating speeds rotary motion and various forms of dynamic excitations, different excitation operating conditions in rotating environment are simulated, to study multistable energy accumulator energy capture characteristic and its Analysis of dynamics performance under different operating conditions.Its test platform structure is simple and convenient to operate, and can accurately control its kinematic parameter, while test-bed design machining accuracy is high, guarantees reliability and stationarity of this experimental rig in high speed rotation environment.
Description
Technical field
The present invention is mainly used for simulating multistable prisoner's energy about multistable energy capture experimental rig in a kind of rotating environment
Energy capture process of the device in rotating environment, while real-time measurement is carried out to its energy capture and mechanical motion characteristic etc., it is
Multistable energy accumulator design in rotating environment provides technological guidance and experimental verification.
Background technique
Sensor monitoring is a kind of health monitoring mode reliable in real time, and the development of sensor technology has pushed Internet of Things
(IOT) progress of technology.Then traditional sensors technology mainly uses wired mode or battery to carry out electric power to sensor
Supply, Problems are as follows: 1. hardwired for power is limited by factors such as working environment, wiring spaces；2. battery power supply mode
The problems such as needing periodic replacement battery, increasing operating cost and bring environmental pollution.
With the development of electronics industry level, low-consumption wireless sensor technology has obtained full development and progress.Mesh
Before, the comprising modules of wireless sensor are encapsulated in shell, are provided power supply by battery or energy accumulator, are realized wireless sensor node
The data acquisition and transmission of point carry out real-time monitoring for the health status of monitoring component.
Green low-carbon environment-friendly becomes future social development inexorable trend, and renewable energy technologies received numerous in recent years
Scholar's research interest and government policy are supported.Energy capture technology based on energy accumulator is mainly the energy that will cannot be stored in environment
Amount, such as thermal energy, mechanical energy, luminous energy, sound energy are converted into the form storage of electric energy.With the rapid development of piezoelectric crystal material,
Energy accumulator based on direct piezoelectric effect becomes a kind of effective way of vibration mechanical energy capture in environment.
The energy capture efficiency for how improving energy accumulator becomes important research theme.Traditional linear energy accumulator work
Band limiting only just has higher-energy transformation efficiency near its resonant frequency.Vibrational energy in environment is wide band
Random vibration has higher energy capture efficiency in wider frequency range in energy accumulator environment to allow, is based on magnetic force multistable
The energy accumulator of characteristic and structure multiple degrees of freedom characteristic becomes research hotspot.
Multistable energy accumulator, which is mainly studied, at present concentrates on plane internal vibration energy capture, however in rotating environment
The rare people research of multistable energy accumulator, in order to study its energy capture characteristic and its kinetic characteristics, it is necessary to build rotation
Multistable energy capture experimental rig in environment.
Summary of the invention
The present invention relates to multistable energy capture experimental rig in a kind of rotating environment, which can set different turn
The rotary motion of speed and various forms of dynamic excitations simulate different excitation operating conditions, research multistable in rotating environment and capture energy
Energy capture characteristic and its kinetic characteristics of the device under different operating conditions.Its test platform structure is simple and convenient to operate, can be accurate
Control its rotation speed and dynamic excitation form, including the forms such as arbitrary excitation and sinusoidal excitation.
The present invention is multistable energy capture experimental rig in a kind of rotating environment, sees attached drawing 2, the experimental rig packet
It includes:
Plane of rotation is process by aluminium design.See attached drawing 3, two different multistables are installed on Plane of rotation
Energy accumulator and laser sensor.Plane of rotation is connected by shaft coupling with servo motor, for simulating different rotation speeds.Together
When Plane of rotation be designed as symmetric configuration, finally need to do it dynamic balancing calibration.
Multistable energy accumulator is shown in attached drawing 4.It is mounted on Plane of rotation and is rotated therewith by fixture, rotate mechanical energy
The cantilever beam of energy accumulator is allowed to vibrate with applied vibration source vibrational energy, the piezoelectric patches for being mounted on cantilever beam end is imitated in positive piezoelectricity
It should act on down and convert vibrational energy into electric energy, electric energy can be used for the low power consumption electronics equipment such as wireless sensor.
External magnet is fixed on fixture, non-linear between external magnet (B&C) and the magnet A of energy accumulator cantilever beam
Magnetic interaction, therefore energy accumulator has multistable step response, can be realized has higher-energy capture in wider frequency range
Efficiency.
Laser sensor is mounted on Plane of rotation and rotates therewith, for measuring the cantilever beam power of energy accumulator
Learn characteristic.
Fixture is mainly used for multistable energy accumulator system and is fixed on Plane of rotation, using connection bolt and rotary flat
Face connection.
Electric slip ring, when for Plane of rotation rotation, transimission power power supply and acquisition signal.See attached drawing 5, mechanism mainly by
Rotor and stator are constituted, and difference extraction wire connection Plane of rotation and fixed structure, rotor portion conducting wire is with Plane of rotation
It rotates together, stationary part conducting wire is stationary, constitutes reliable and stable rotational communication system.
Testing stand support frame is process by aluminium design, and support frame is mainly used for supporting servo motor and power
Output shaft designs solid reliable and higher, the guarantee test platform smooth running of concentric degree.
Servo motor, the driving power source using servo motor as rotary motion, motor output end by shaft coupling with
Axis connection is rotated, rotation axis is designed by spacer flanger and connect with Plane of rotation, provided power for Plane of rotation, realize rotation
The movement of plane different rotating speeds.
Servomotor controller, be controller matched with servo motor, be mainly used for servo motor revolving speed, direction,
The state modulators such as angle, response time.See attached drawing 1, servomotor controller is by biography built in artificial preset instructions and servo motor
Sensor feedback signal Collaborative Control realizes the even running in different rotating speeds and dynamic excitation.
Shaft coupling connects servo motor output shaft and rotation axis, in order to the power source of servo motor be exported and passed
It is sent to rotation axis, makes it that Plane of rotation be driven to realize rotary motion.
Bearing, installation on the rotating shaft, position, while installing testing stand support frame to realize to rotation axis, guarantee rotation
Turn the rotary motion high-speed smooth of plane.
Connecting plate, major function are joint test platform and shake table, and the dynamic excitation of shake table can be transmitted to rotation examination
Test platform.It is thicker to connect plate thickness, avoids the resonant frequency with shake table dynamic excitation.
Data collection system comprising laser sensor, data collecting card, oscillograph etc..Laser sensor is for measuring
The cantilever beam vibration displacement of multistable energy accumulator, to analyze its multistable mechanical characteristic.Data collecting card mainly acquires laser
Sensing data and energy accumulator voltage output data.
Related assistant experiment component plays the role of the auxiliary and convenience of experiment.
The characteristics of experimental rig of the invention and advantage are as follows: multistable energy accumulator energy in rotating environment can be simulated and captureed
Obtain process, at the same accurately control rotation speed, spin up procedure and moderating process and dynamic excitation form (arbitrary excitation and
Sinusoidal excitation), for multistable energy accumulator, experimental verification provides experiment porch in rotating environment.
First: multistable energy accumulator being installed on Plane of rotation, adjusts the spacing 2h of external magnet B and C, while adjusting prisoner
The spacing d of the external magnets B&C of magnet A, allows energy accumulator multistable step response occur on energy device cantilever beam.Energy accumulator piezoelectricity conducting wire with
The rotor portion conducting wire of electric slip ring connects.Then: connection servo motor and servomotor controller, confirmation motor output shaft with
It is intact to rotate the connection of between centers shaft coupling, is bolted to connection plate and shake table.It is last: setting servo motor operating parameters,
Servo motor is allowed to drive Plane of rotation rotation.The dynamic excitation parameter for concurrently setting shake table, allows shake table to provide for testing stand
External vibration source.
Different rotation rates are set by electric machine controller, simulate energy accumulator energy capture characteristic under different rotating speeds.Together
When can also set dynamic excitation parameter, simulate different driving sources and act on lower energy accumulator characteristics.It can also be captureed simultaneously by adjusting
Different multistable step responses can be presented in energy device structural parameters, energy accumulator.
The present invention is controlled by rotation speed, rotary acceleration of the servomotor controller to Plane of rotation, servo
Motor is power source drive, makes to be mounted on multistable energy accumulator on Plane of rotation and makes rotating motion, simulates it in rotating environment
Rotating mechanical energy removal process.Dynamic excitation vibration source can also be provided simultaneously, dynamic excitation source rotating ring can have been simulated
Multistable energy accumulator energy capture process in border.Experimental rig of the present invention, movement is convenient for disassembly and assembly, and operating condition of test can be controlled accurately
System, while experimental data is acquired, the design for energy accumulator in rotating environment provides reference and basis.
Detailed description of the invention
In order to more clearly illustrate the technical solution in the invention patent, while related personnel being allowed more preferably to understand this test dress
It sets, simple introduction is done to critical component in the present invention and combinations thereof attached drawing below.The following drawings, which is only intended to be the present invention, to be illustrated
Property explanation and explain.
Fig. 1 is multistable energy capture experimental rig operation principle schematic diagram and layout in rotating environment of the present invention.
Fig. 2 is multistable energy capture experimental rig three-dimensional model diagram in rotating environment of the present invention.
Fig. 3 is Plane of rotation structural schematic diagram of the invention.
Fig. 4 is multistable energy accumulator structural schematic diagram of the present invention.
Fig. 5 is the electric slip ring structural schematic diagram that the present invention is connect for Plane of rotation with fixed pan conducting wire.
Component symbol explanation:
1 ... experimental rig rack 2 ... moving parts
3 ... energy accumulator 4 ... signal acquisitions and transmission assembly
5 ... control assembly 6 ... accessory parts
21 ... servo motor 22 ... shaft couplings
23 ... rotation axis 24 ... bearings
25 ... Plane of rotation 26 ... shake tables
31 ... cantilever beam 32 ... piezoelectric patches
33 ... permanent magnets
41 ... laser sensor 42 ... electric slip rings
43 ... electric slip ring stator 44 ... electric slip ring rotors
45 ... conducting wire 46 ... signal acquiring systems
Software is arranged in 51 ... servomotor controller 52 ... the parameters of electric machine
53 ... shake table controller 54 ... shake table parameter setting softwares
55 ... miniature circuit breaker 56 ... acceleration transducers
61 ... fixture 62 ... connecting plates
63 ... conducting wire fixed cable ties 64 ... connect bolt
Specific embodiment
Below with reference to attached drawing in the embodiment in the present invention, clearly detailed description is done to its technical solution.Obviously, described
Embodiment is only a part of the embodiment of the present invention, rather than whole embodiments.Embodiment in the present invention, ordinary skill people
The every other embodiment that member obtains in the case where not making innovative achievement, belongs to the scope of the present invention.
Embodiment 1
As shown in Figure 1, multistable energy capture experimental rig includes: experimental rig rack 1, fortune in rotating environment of the present invention
Dynamic component 2, energy accumulator 3, signal acquisition and transmission assembly 4, control assembly 5 and accessory part 6.
As shown in Fig. 2, the moving parts 2 of experimental rig are arranged on experimental rig rack 1, test-bed 1 passes through connection
Plate 62 is connect with shake table 27.The trial movement component specifically includes that servo motor 21, shaft coupling 22, rotation axis 23, bearing
24, Plane of rotation 25 and shake table 26 etc..Driving power source of the servo motor 21 as experimental rig rotary motion, rotation axis 23
It is connected with servo motor 21 by shaft coupling 22, the flange arrangement in rotary shaft 23 and Plane of rotation 25 are connected by connection bolt 64
Fixation is connect, the movement for Plane of rotation 25 provides power.Meanwhile shake table 26 is that top rotary motion applies dynamic excitation, because
This can simulate energy capture process of the multistable energy accumulator by dynamic excitation in rotating environment, and its energy of experimental exploring is captureed
Transformation efficiency and mechanical motion characteristic during obtaining.
As shown in figure 3, the Plane of rotation overall structure diagram of experimental rig.It is fixed by fixture 61 on Plane of rotation 25
Two multistable energy accumulators 3 can allow energy accumulator different multistables occur special by adjusting permanent magnet 33 spacing and number
Property.Two laser sensors 41 are bolted on Plane of rotation 25 simultaneously, and the cantilever beam 31 for measuring energy accumulator exists
Displacement under rotary motion and extraneous vibration excitation.
As shown in figure 4, the multistable energy accumulator overall structure diagram of experimental rig.The component of the multistable energy accumulator
Specifically include that piezoelectric patches 32, cantilever beam 31 and permanent magnet 33.Specifically: cantilever beam 31 is fixed on Plane of rotation by fixture 61
On 25, the use sticking double faced adhesive tape of piezoelectric patches 32 is in the end that cantilever beam 31 is connect with fixture 61, two uses pair of piezoelectric patches 32
Claim distribution form, permanent magnet 33 (A) is fixed on 31 front end of cantilever beam, and permanent magnet 33 (B&C) is fixed on fixture 61, then leads to
Connection bolt 64 is crossed to be fixed on Plane of rotation 25.Plane of rotation 25 drives energy accumulator 3 to make rotating motion, while being vibrated platform
26 dynamic excitation vibration, energy accumulator 3 can capture rotating mechanical energy and vibrational energy.
As shown in figure 5, the electric slip ring structural schematic diagram of experimental rig.Electric slip ring 42 is mainly sliding by electric slip ring stator 43 and electricity
Rotor 44 forms, and there is the connector of conducting wire 45 at both ends respectively, totally 12 channel wiring, is suitble to high speed rotary motion.Electric slip ring
Rotor 44 is connect with rotation axis 23, the power supply line of laser sensor 41 and data line on Plane of rotation 25, piezoelectric patches 32
Data line is connect with 45 connector of conducting wire of electric slip ring rotor 44, and rotor portion conducting wire is rotated together with Plane of rotation 25；
Electric slip ring stator 43 is fixedly connected with experimental rig rack 1,45 connector of conducting wire and data collection system 46 of electric slip ring stator 43,
The wiring such as power supply connection.Stationary part conducting wire is stationary, constitutes reliable and stable rotational communication system.
Embodiment 2
The present invention is multistable energy capture experimental rig in a kind of rotating environment, and specific to implement operation as follows:
Confirmation miniature circuit breaker 55 is in an off state, and connection servo motor 21 and servomotor controller 51, confirmation is watched
Take the shaft coupling 22 between motor output shaft and rotation axis 23 and connect intact, whether bearing 24 normal, around Plane of rotation 25 whether
There is the barrier for hindering rotary motion.
The connection bolt 64 of fastening connecting plate 62 and shake table 26, connection shake table controller 53 and shake table 26.
With sticking double faced adhesive tape piezoelectric patches 32 in 31 end of cantilever beam, guarantee that its bonding is intact.It adjusts on Plane of rotation 25
3 system parameter of multistable energy accumulator, including permanent magnet 33 (B) and (C) spacing, permanent magnet 33 (A) and permanent magnet on cantilever beam 31
The spacing of 33 (B&C) allows energy accumulator preferably multistable step response occur.
Confirmation 41 power supply line of laser sensor and data line connect intact with 44 end conducting wire 55 of electric slip ring rotor；Again
It is secondary, connection 32 voltage output conducting wire of piezoelectric patches and 44 end conducting wire 55 of electric slip ring rotor；Finally confirm energy accumulator 3 associated component with
Plane of rotation 25 connects intact.
The relevant parameter that servo motor 21 is arranged in software 52 is set by the parameter of electric machine, is set simultaneously also by shake table parameter
Set the relevant parameter that software 54 sets shake table 26；Then, the data output lead and signal acquisition of electric slip ring stator 43 are connected
System 46；Reaffirm that all lines are intact errorless.
It is closed miniature circuit breaker 55, starting servo motor 21 and shake table 26.Motor is allowed to drive entirely by rotation axis 23
Rotary motion component 2 makes rotating motion, while shake table 26 applies dynamic excitation to top test assembly, carries out experimental data and adopts
Collection.
Experimental rig of the present invention, by the way that the rotating environment by dynamic excitation can be simulated to different experiments parameter setting
The energy capture characteristic of middle multistable energy accumulator and its mechanical motion characteristic.
The characteristics of experimental rig of the present invention and advantage are as follows: simulate multistable energy accumulator and swashed in rotating environment by the external world
Energy capture process when encouraging, can set different rotation rates and dynamic excitation form, while installing Different structural parameters
Energy accumulator provides experiment and theory support for the research of energy capture characteristic and design of multistable energy accumulator in rotating environment.
Specific embodiment is applied in the embodiment of the present invention to experimental rig composition, experimental principle and implementation of the invention
Scheme is discussed, and above example illustrates the experimental method for being merely used to help understand experimental rig of the present invention and operated
Journey.Meanwhile for persons skilled in the art, thought according to an embodiment of the present invention in specific embodiment and applies model
Enclose that there will be changes with material.In conclusion its summary of the invention should not be construed as development of the invention.
Claims (8)
1. multistable energy capture experimental rig in a kind of rotating environment, which is characterized in that the experimental rig includes:
(1) experimental rig rack.
(2) trial movement component is mounted on the experimental rig rack, and the trial movement component, which specifically includes that, to be watched
Motor, shaft coupling, rotation axis, bearing, Plane of rotation and shake table are taken, top rotary part is driven by servo motor, and is passed through
Connecting plate is connect with shake table.
(3) energy capture device is experimental subjects, is mounted on Plane of rotation that prisoner's energy system component specifically includes that cantilever
Beam, piezoelectric patches and permanent magnet.
(4) signal acquisition and transmission assembly comprising laser sensor, electric slip ring, electric slip ring stator, electric slip ring rotor, conducting wire
And signal acquiring system.Laser sensor is bolted on Plane of rotation, for measuring the cantilever beam of energy capture device
The vibration displacement signal under rotary motion and dynamic excitation, collects displacement signal and is output to signal acquiring system.
(5) control assembly is the control centre of entire experimental provision.The control assembly specifically include that servomotor controller,
Software, shake table controller, shake table parameter setting software, miniature circuit breaker and acceleration transducer is arranged in the parameter of electric machine.
(6) accessory part is tested comprising: fixture, connecting plate, conducting wire securing loop band and connection bolt etc..For assisting installing
And attachment device, all conducting wires on rotary part need to be fixed with conducting wire securing loop band, guarantee that all components connections are reliable
And surrounding clear stops rotary motion.
2. multistable energy capture experimental rig in rotating environment as described in claim 1, which is characterized in that the servo electricity
Machine is fixed on test-bed by flange connecting plate, connects rotation axis by shaft joint and Plane of rotation component is driven to do rotation fortune
It is dynamic.Meanwhile top rotary part is fixedly connected by connecting plate with shake table bolt, shake table provides extraneous to energy capture device
Excitation.
3. multistable energy capture experimental rig in rotating environment as claimed in claim 2, which is characterized in that joined by motor
The relevant parameter of number setting software set servo motor, simultaneously also by the correlation of shake table parameter setting software set shake table
Parameter, in addition it is also possible to adjust multistable step response by energy capture device Different structural parameters.It simulates different under different operating conditions
The experiment of multistable energy capture device is tested.
4. multistable energy capture experimental rig in rotating environment as claimed in claim 3, which is characterized in that the multistable
Its adjustable structural parameters of energy capture device, the length and thickness of cantilever beam, the size and number of permanent magnet make energy capture
There is different multistable step responses in device.
5. multistable energy capture experimental rig in rotating environment as claimed in claim 4, which is characterized in that the multistable
Characteristic, the non-linear magnetic force that interacts between permanent magnet can make energy catcher multistable step response occur, and front end magnet is rotating
It jumps between different stable points under movement and dynamic excitation effect, larger vibration displacement drives the piezoelectric patches of cantilever beam end just
Vibrational energy is converted into electric energy, displacement signal and voltage signal under piezoelectric effect and passes through electric slip ring structure output to external signal
Acquisition system.
6. multistable energy capture experimental rig in rotating environment as claimed in claim 5, which is characterized in that the electricity is sliding
Ring, when for Plane of rotation rotation, transimission power power supply and acquisition signal.Its mechanism is mainly made of rotor and stator, point
Other extraction wire connection Plane of rotation and fixed structure, rotor portion conducting wire are rotated together with Plane of rotation, and stationary part is led
Line is stationary, constitutes reliable and stable rotational communication system.
7. multistable energy capture experimental rig in rotating environment as described in claim 1, which is characterized in that its major elements
As shown in Figure 1, readable strong and easy to operate.
8. multistable energy capture experimental rig in rotating environment as described in claim 1, which is characterized in that the testing stand
It is high to set up meter machining accuracy, it is concentric to spend, and Plane of rotation need to do dynamic balancing calibration, electric slip ring can be in higher rotation speed
It works normally, guarantees this experimental rig reliability and stationarity in high speed rotation environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596964.1A CN109655097A (en) | 2018-12-25 | 2018-12-25 | Multistable energy capture experimental rig in a kind of rotating environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596964.1A CN109655097A (en) | 2018-12-25 | 2018-12-25 | Multistable energy capture experimental rig in a kind of rotating environment |
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| CN109655097A true CN109655097A (en) | 2019-04-19 |
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| CN201811596964.1A Pending CN109655097A (en) | 2018-12-25 | 2018-12-25 | Multistable energy capture experimental rig in a kind of rotating environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110333445A (en) * | 2019-07-25 | 2019-10-15 | 山东科技大学 | A kind of plane multifrequency pick-up prisoner can experimental provision and its application method |
| CN113098323A (en) * | 2021-05-24 | 2021-07-09 | 北京理工大学 | Direct-current power quantization and performance optimization method of three-stable-state energy harvester in random environment |
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Application publication date: 20190419 |