CN108827587A - A kind of stack piezoelectric ceramic actuator output performance test method - Google Patents
A kind of stack piezoelectric ceramic actuator output performance test method Download PDFInfo
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- CN108827587A CN108827587A CN201810577134.8A CN201810577134A CN108827587A CN 108827587 A CN108827587 A CN 108827587A CN 201810577134 A CN201810577134 A CN 201810577134A CN 108827587 A CN108827587 A CN 108827587A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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Abstract
A kind of stack piezoelectric ceramic actuator output performance test method of the present invention belongs to wind tunnel model test vibration suppression field, is related to a kind of stack piezoelectric ceramic actuator performance test methods suitable for wind-tunnel active vibration suppression strut.Test method constitutes stack piezoelectric ceramic actuator output performance test macro with pressure sensor, foil gauge, stack piezoelectric ceramic actuator and computer using Measurement and Control System and is tested.Stack piezoelectric ceramic actuator output performance test macro is installed on the base first, adjusts fastening nut further according to requirement of experiment, after so that the registration of pressure sensor is reached scheduled pretightning force numerical value, operation Measurement and Control System is tested.Using computer and Measurement and Control System acquisition strain, pressure information, and carry out post-processing.Test method is simple, reliable, precision is high, when experiment condition variation, only needs simple regulation experiment device, convenient and practical.
Description
Technical field
The invention belongs to wind tunnel model test vibration suppression fields, are related to a kind of heap suitable for wind-tunnel active vibration suppression strut
Stacked piezoelectric ceramic actuator performance test methods.
Background technique
Wind tunnel model test is a kind of highly important means during aircraft is developed with performance test, accurately
Stable wind tunnel simulation data can be studied for aviation aircraft air dynamic behaviour and provide important basis.
In wind tunnel test, tail support is common model support mode, but the model system of shoe form is typical case
Cantilever beam structure, system stiffness is low, easily couples with the low frequency pulsating air-flow in wind-tunnel, so as to cause the substantially vibration of model.
System vibration, which will lead to, can not accurately measure aeroperformance, if strut substantially vibrates for a long time, strut is likely to be broken, and gives
Wind tunnel test causes great security risk.In the active and passive suppressing method of wind-tunnel strut system vibration, inhibition of vibration is preferable
Method be using driver carry out active control vibration suppression, longitudinal piezoelectric ceramic actuator taken in structure stacks type arrangement,
Together by many single layer mechanical series, it is electrically connected in parallel.It can efficiently convert electrical energy into mechanical energy, and volume
Small, driving force is big with driving power, therefore driver multiselect stack piezoelectric ceramic actuator.Stack Piezoelectric Ceramic
The performance of device has direct influence to the quality of inhibition of vibration, therefore carries out to the performance of stack piezoelectric ceramic actuator complete
The test in face is most important.For stack piezoelectric ceramics in engineer application, the pretightning force that when installation applies can be to its output performance
Large effect is generated, excessive pretightning force can make stack piezoelectric ceramic actuator repolarization, on the one hand, increase displacement
Add, on the other hand, effective capacitance value and loss increase, and will affect the service life of stack piezoelectric ceramic actuator.Pressure pretightning force
It equally can also generate the tensile stress of part.Therefore, when pretightning force is very big, local elongation stress can be more than maximum value, can shadow
It rings the stack piezoelectric ceramic actuator service life and even damages stack piezoelectric ceramic actuator.Therefore research pretightning force is to stack
The influence of piezoelectric ceramic actuator is very necessary for engineering reality.It is surveyed for the performance of stack piezoelectric ceramic actuator
Examination, such as the Li Songhua of Shenyang Building Univ., " a kind of packaged type piezoelectric ceramics test device " of a left side is rushed et al. invention, Patent No.
CN201720267190.2.It has invented one kind and can monitor stack piezoelectric ceramic actuator and exported in different pretightning force bottom offsets
Device, can flexibly measure the output performance of stack piezoelectric ceramic actuator under different pretightning forces, but do not account for stacking
The influence of formula piezoelectric ceramic actuator gravity, is not concerned with the variation of stack piezoelectric ceramic actuator power output, cannot be extensive
Suitable for engineer application.
Summary of the invention
Problem solved by the invention is stack Piezoelectric Ceramic in wind-tunnel strut active vibration control vibration suppression scheme
The output performance of device is unknown, and there are unknown influences on stack piezoelectric ceramic actuator for pretightning force, without dedicated test device
And the problems such as fixed test method, it is defeated to have invented a kind of stack piezoelectric ceramic actuator for wind-tunnel active vibration suppression strut
Performance test methods out, this method is using Measurement and Control System and pressure sensor, foil gauge, stack piezoelectric ceramic actuator
Electroceramics driver output performance test macro is constituted with computer, applies certain preload to stack piezoelectric ceramic actuator
Power is supplied to the corresponding driving voltage of stack piezoelectric ceramic actuator, utilizes computer and Measurement and Control System acquisition strain, pressure
Force information, and carry out post-processing.This method can measure voltage-elongation of the piezoelectric ceramics under different pretightning forces, output
Power-elongation characteristic, test method is simple, reliable, precision is high.When experiment condition variation, simple regulation experiment dress is only needed
It sets, it is convenient and practical.
The technical solution adopted by the present invention is that a kind of stack piezoelectric ceramic actuator output performance test method, feature
It is that test method is constituted using Measurement and Control System and pressure sensor, foil gauge, stack piezoelectric ceramic actuator and computer
Stack piezoelectric ceramic actuator output performance test macro is tested, and specific step is as follows for method：
The first step installs stack piezoelectric ceramic actuator output performance test macro on the base
Long recess is provided on pedestal 10, the left end of long recess has a boss for installing fixed tailstock 1, the right side of long recess
End processing is jagged；Fixed tailstock 1 is inverted L-shaped, fixed tailstock circular groove 101 is machined in long right-angle surface, at short right angle
Two through-holes are processed on face, and fixed tailstock 1 is fixed on 10 long recess left end of pedestal by the two through-holes with two bolts；Pad
4 one side of piece has gasket circular groove 401, and another side is gasket Surface of Sphere 402；Foil gauge 3 is affixed on stack piezoelectric ceramics
2 surface of driver, then stack piezoelectric ceramic actuator 2 is mounted between fixed tailstock 1 and gasket 4, make stack piezoelectricity
Ceramic driver 2 can cooperate with fixed tailstock circular groove 101 and gasket circular groove 401 respectively, and aligning positions；It will pressure
Force snesor 5 is fixedly mounted between gasket 4 and push rod 6, and the planar ends of push rod 6 are close to pressure sensor 5, the stock of push rod 6
The notch across 10 right end of pedestal is held, can be slided along the long recess of pedestal, the long rod end of push rod 6 has screw thread and fastening nut 7
Cooperation is fixed；
Finally, by Measurement and Control System 9 and pressure sensor 5, foil gauge 3, stack piezoelectric ceramic actuator 2 and computer
8 connect, and test macro installs；
Second step：Fastening nut 7 is adjusted according to requirement of experiment, the registration of pressure sensor 5 is made to reach specified pretightning force.
Third step：It operates the Measurement and Control System 9 to be tested, is sequentially output specified driving voltage, while passing through electricity
Brain 8 records strain value and the variation of 5 registration of pressure sensor；
4th step：Data are acquired and handled using computer 8, and piezoelectric ceramics pressure is controlled by pressure sensor and measurement
Systematic survey show that the strain information of stack piezoelectric ceramic actuator is obtained by foil gauge and Measurement and Control System measurement；
Output effective force F is obtained according to experimental dataeffWith stack piezoelectric ceramic actuator displacement L, according to following public affairs
Formula：
Wherein, FmaxFor piezoelectric ceramics drag；ΔL0To be nominally displaced, in stack piezoelectric ceramic actuator technology table
It is found out in lattice；kLFor load stiffness, kAFor stack piezoelectric ceramic actuator rigidity, acquired by following formula：
The drag F of the stack piezoelectric ceramic actuator is acquired according to above formulamax, load stiffness kLAnd piezoelectricity
Ceramic driver rigidity kA,
Draw the voltage-elongation relational graph and power output-elongation relational graph of stack piezoelectric ceramic actuator.
The beneficial effects of the invention are as follows test methods simple, reliable, precision height, the stack Piezoelectric Ceramic in test
Device is in a horizontal state, and can influence caused by experimental result to avoid stack piezoelectric ceramic actuator gravity.Stack piezoelectricity
Circular groove form is respectively adopted in the both ends of ceramic driver and fixed tailstock and gasket cooperation, realizes its centering adjustment, reduces
Assembly difficulty, improves assembly precision.The face of gasket and stack pressure sensor contacts is designed as Surface of Sphere, guarantees pressure
Sensor and gasket are point contact, can only transmit axial force, guarantee stack piezoelectric ceramic actuator not by the effect of shearing force,
To avoid stack piezoelectric ceramic actuator from being damaged.The switching of the pretightning force needed in experiment is only needed to adjust fastening spiral shell
Mother can reach effect, be able to satisfy the test of most of stack piezoelectric ceramic actuator performance.Test macro can not only be remembered
The data of node needed for recording, moreover it is possible to the data situation in real-time observation experiment process, to ensure that stack piezoelectric ceramics drives
Dynamic device will not be damaged.
Detailed description of the invention
Fig. 1 is test principle figure of the invention.
Fig. 2 is the structural schematic diagram of test macro of the present invention, wherein the fixed tailstock of 1-, 2- stack Piezoelectric Ceramic
Device, 3- foil gauge, 4- gasket, 5- pressure sensor, 6- push rod, 7- fastening nut, 8- computer, 9- Measurement and Control System, 10- base
Seat.
Fig. 3 is the structural schematic diagram of the fixed tailstock of the present invention, wherein the fixed tailstock of 1-, the fixed tailstock circular groove of 101-.
Fig. 4 is the structural schematic diagram of gasket of the present invention, wherein 4- gasket, 401- gasket circular groove, 402- gasket ball
Face.
Fig. 5 is the flow chart of test method of the invention.
Fig. 6 is that stack piezoelectric ceramic actuator controls voltage-elongation relational graph in embodiment.Wherein, 1- unloading is bent
Line, 2- loading curve, abscissa-control voltage (V), ordinate-elongation (μm).
Fig. 7 is stack piezoelectric ceramic actuator power output-elongation relational graph in embodiment.Wherein, 1- unloading curve,
2- loading curve, abscissa-power output (KN), ordinate-elongation (μm).
Specific embodiment
Below with reference to the specific detailed implementation that the present invention will be described in detail of technical solution and attached drawing.
As shown in Fig. 2, a kind of stack piezoelectric ceramic actuator output performance for wind-tunnel active vibration suppression strut is tested
System is by pedestal 10, fixed tailstock 1, stack piezoelectric ceramic actuator 2, foil gauge 3, gasket 4, pressure sensor 5, push rod 6,
Fastening nut 7, computer 8, Measurement and Control System 9 form.
Fig. 1 is test principle figure of the invention, first give pretightning force, the information of pressure sensor reception, send to
Stack piezoelectric ceramic actuator and Measurement and Control System, what the foil gauge pasted on stack piezoelectric ceramic actuator measured answers
Become information and be also sent to Measurement and Control System, while Measurement and Control System sends voltage letter to stack piezoelectric ceramic actuator
Breath, and these data are all sent to computer and carry out data analysis and process.
In the present embodiment, pressure sensor range is that 6000N tests stack pressure when the default pretightning force of measurement is 2000N
The driving voltage of electroceramics driver 2 and the relationship of elongation magnitude relation and power output and elongation.
The flow chart of stack piezoelectric ceramic actuator output performance test method of the present invention as shown in figure 5, process tool
Steps are as follows for body：
The first step installs stack piezoelectric ceramic actuator output performance test macro on the base.
Long recess is provided on pedestal 10, the left end of long recess has a boss for installing fixed tailstock, the right side of long recess
End processing is jagged；Fixed tailstock 1 is inverted L-shaped, fixed tailstock circular groove 101 is machined in long right-angle surface, at short right angle
Two through-holes are processed on face, are passed through two through-holes in the fixed short right-angle surface of tailstock 1 with two bolts and are fixed on fixed tailstock 1
On the left end boss of 10 long recess of pedestal；4 one side of gasket has gasket circular groove 401, and another side is gasket Surface of Sphere 402；
Foil gauge 3 is affixed on 2 surface of stack piezoelectric ceramic actuator, then stack piezoelectric ceramic actuator 2 is mounted on fixed tail
Between seat 1 and gasket 4, keep stack piezoelectric ceramic actuator 2 round with fixed tailstock circular groove 101 and gasket respectively
Groove 401 is positioned with aligning is merged；As shown in Figure 2,3, 4.Pressure sensor 5 is fixedly mounted between gasket 4 and push rod 6,
The planar ends of push rod 6 are close to pressure sensor 5, and the long rod end of push rod 6 passes through the notch of 10 right end of pedestal, can be along the length of pedestal
Groove sliding, the long rod end of push rod 6 have screw thread and the cooperation of fastening nut 7 to fix；
Finally, by Measurement and Control System 9 and pressure sensor 5, foil gauge 3, stack piezoelectric ceramic actuator 5 and computer
8 connect, and test macro installs.
Second step：Fastening nut 7 is adjusted according to requirement of experiment, reaching the registration of pressure sensor 5, measurement is default to be pre-tightened
Power 2000N.
Third step：Operation Measurement and Control System 9 is tested, and is sequentially output specified driving voltage, while remembering by computer 8
Record strain value and the variation of 5 registration of pressure sensor.
4th step：Data are acquired and handled using computer 8.
Stack piezoelectric ceramic actuator pressure obtains by pressure sensor and Measurement and Control System measurement, stack
The strain information of piezoelectric ceramic actuator is obtained by foil gauge and Measurement and Control System measurement.Nominal displacement l0It can be in stack
It is found out in the technology table of piezoelectric ceramic actuator 2.Stack piezoelectric ceramics can be found out according to formula (1), (2), (3), (4)
The drag F of driver 2max, load stiffness kLWith stack piezoelectric ceramic actuator rigidity kA。
Voltage-elongation spirogram of stack piezoelectric ceramic actuator is drawn, as shown in Figure 6.Draw stack piezoelectric ceramics
Driver power output-elongation spirogram, as shown in Figure 7.The relationship of driving voltage, power output and elongation is respectively indicated out in figure.
Claims (1)
1. a kind of stack piezoelectric ceramic actuator output performance test method, characterized in that test method is using measurement control
System and pressure sensor, foil gauge, stack piezoelectric ceramic actuator and computer composition stack piezoelectric ceramic actuator are defeated
Performance Test System is tested out, and specific step is as follows for method：
The first step installs piezoelectric ceramic actuator output performance test macro on the base
Long recess is provided on pedestal (10), long recess left end has a boss for installing fixed tailstock (1), the right end of long recess
It processes jagged；Fixed tailstock (1) is inverted L-shaped, and fixed tailstock circular groove (101) is machined in long right-angle surface, short straight
Two through-holes are processed on edged surface, and fixed tailstock (1) is fixed on pedestal (10) long recess by the two through-holes with two bolts
On the boss of left end；Gasket (4) has gasket circular groove (401) on one side, and another side is gasket Surface of Sphere (402)；Strain
Piece (3) is affixed on piezoelectric ceramic actuator (2) surface, then piezoelectric ceramic actuator (2) is mounted on fixed tailstock (1) and gasket
(4) between, make piezoelectric ceramic actuator (2) can respectively with fixed tailstock circular groove (101) and gasket circular groove (401)
Cooperation, and aligning positions；Pressure sensor (5) is fixedly mounted between gasket (4) and push rod (6), the planar ends of push rod (6)
It is close to pressure sensor (5), the long rod end of push rod (6) passes through the notch of pedestal (10) long recess right end, can be along the length of pedestal
Groove sliding, the long rod end of push rod (6) have screw thread and fastening nut (7) cooperation to fix；
Finally, by Measurement and Control System (9) and pressure sensor (5), foil gauge (3), piezoelectric ceramic actuator (5) and computer
(8) it connects, test macro installs；
Second step：Fastening nut (7) are adjusted according to requirement of experiment, the registration of pressure sensor (5) is made to reach scheduled pretightning force
Numerical value；
Third step：It operates the Measurement and Control System (9) and carries out experiment test；It is sequentially output specified driving voltage, is passed through simultaneously
Computer (8) records strain value and the variation of pressure sensor (5) registration；
4th step：Data are acquired and handled using computer (8), and piezoelectric ceramics pressure is by pressure sensor and measurement control system
Unified test measures out, and the strain information of piezoelectric ceramic actuator is obtained by foil gauge and Measurement and Control System measurement；
Output effective force F is obtained according to experimental dataeffWith piezoelectric ceramic actuator displacement L, according to the following formula：
Wherein, FmaxFor piezoelectric ceramics drag；ΔL0To be nominally displaced, found out in piezoelectric ceramic actuator technology table；kL
For load stiffness, kAFor piezoelectric ceramic actuator rigidity, acquired by following formula：
The drag F of piezoelectric ceramic actuator is acquired according to above formulamax, load stiffness kLWith piezoelectric ceramic actuator rigidity
kA；
Control voltage-elongation the relational graph and power output-elongation relational graph of piezoelectric ceramic actuator are drawn respectively.
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Cited By (8)
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| CN109533247A (en) * | 2018-11-19 | 2019-03-29 | 江苏科技大学 | The piezoelectricity vibration suppression system and vibration suppression method of marine propeller blade water elastic vibration |
| CN109657356A (en) * | 2018-12-20 | 2019-04-19 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of control parameter calculation method and device |
| CN110567672A (en) * | 2019-09-24 | 2019-12-13 | 大连理工大学 | Method for testing output characteristics of stacked piezoelectric ceramics under large-range temperature change |
| CN112222439A (en) * | 2020-09-30 | 2021-01-15 | 哈尔滨芯明天科技有限公司 | Large-bearing ultra-precise rapid machining positioning table |
| CN112570243A (en) * | 2019-09-30 | 2021-03-30 | 重庆西山科技股份有限公司 | Method and system for controlling pretightening force of ultrasonic transducer |
| CN112857668A (en) * | 2021-03-16 | 2021-05-28 | 华中科技大学 | Piezoelectric ceramic driver fixing device |
| CN113866544A (en) * | 2021-09-29 | 2021-12-31 | 中国科学院光电技术研究所 | Device for measuring displacement output of piezoelectric ceramic driver under load |
| CN113884231A (en) * | 2021-09-29 | 2022-01-04 | 中国科学院光电技术研究所 | Device for testing output force of piezoelectric ceramic driver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109533247A (en) * | 2018-11-19 | 2019-03-29 | 江苏科技大学 | The piezoelectricity vibration suppression system and vibration suppression method of marine propeller blade water elastic vibration |
| CN109657356A (en) * | 2018-12-20 | 2019-04-19 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of control parameter calculation method and device |
| CN109657356B (en) * | 2018-12-20 | 2023-04-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Control parameter calculation method and device |
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| CN112222439A (en) * | 2020-09-30 | 2021-01-15 | 哈尔滨芯明天科技有限公司 | Large-bearing ultra-precise rapid machining positioning table |
| CN112222439B (en) * | 2020-09-30 | 2022-02-11 | 哈尔滨芯明天科技有限公司 | Large-bearing ultra-precise rapid machining positioning table |
| CN112857668A (en) * | 2021-03-16 | 2021-05-28 | 华中科技大学 | Piezoelectric ceramic driver fixing device |
| CN113866544A (en) * | 2021-09-29 | 2021-12-31 | 中国科学院光电技术研究所 | Device for measuring displacement output of piezoelectric ceramic driver under load |
| CN113884231A (en) * | 2021-09-29 | 2022-01-04 | 中国科学院光电技术研究所 | Device for testing output force of piezoelectric ceramic driver |
| CN113866544B (en) * | 2021-09-29 | 2023-05-30 | 中国科学院光电技术研究所 | Device for measuring displacement output under load of piezoelectric ceramic driver |
| CN113884231B (en) * | 2021-09-29 | 2023-05-30 | 中国科学院光电技术研究所 | Device for testing output force of piezoelectric ceramic driver |
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