CN208847330U - A vision-based vibration detection and control device for cylindrical annular thin shell - Google Patents
A vision-based vibration detection and control device for cylindrical annular thin shell Download PDFInfo
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- CN208847330U CN208847330U CN201821619828.5U CN201821619828U CN208847330U CN 208847330 U CN208847330 U CN 208847330U CN 201821619828 U CN201821619828 U CN 201821619828U CN 208847330 U CN208847330 U CN 208847330U
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- cylindrical annular
- thin shell
- annular thin
- vibration detection
- control device
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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Abstract
本实用新型公开了一种基于视觉的圆柱环形薄壳振动检测控制装置，包括圆柱环形薄壳本体部分，振动检测部分及驱动控制部分；所述振动检测部分包括一对CCD相机、压电传感器、电荷放大器、A/D采集卡及计算机，所述驱动控制部分包括惯性质量激振器单元及压电陶瓷驱动器单元。本装置采用两种测量方式，多传感器融合的控制模式，能精确对圆柱环形薄壳进行测量与控制。
The utility model discloses a vision-based cylindrical annular thin shell vibration detection and control device, comprising a cylindrical annular thin shell body part, a vibration detection part and a drive control part; the vibration detection part comprises a pair of CCD cameras, piezoelectric sensors, A charge amplifier, an A/D acquisition card and a computer, the drive control part includes an inertial mass exciter unit and a piezoelectric ceramic driver unit. The device adopts two measurement methods and a multi-sensor fusion control mode, which can accurately measure and control the cylindrical annular thin shell.
Description
Technical field
The utility model relates to detect control field, and in particular to a kind of cylindrical annular shell vibration detection of view-based access control model
Control device.
Background technique
Cylindrical annular shell structure is wide in the application of the fields of industrial manufacturing such as aircraft, submarine, rocket, aircraft and track train
General, their many important components all use cylindrical annular shell structure.However the vibration of cylindrical annular shell and its making an uproar for generation
Sound is generally existing: aerospace field, the vibration in spacecraft orbit cabin and its noise；Military field, the cylindrical annular of submarine
The vibration of shell structure and its noise；In real daily life, the track train vibration and its generation of engine in the process of moving
Noise；There is also the vibration of engine and its noise this hidden danger generated for auto manufacturing；The microvibration of incubator and its
Noise；There are vibration and its noise etc. of the pressure vessel of the cylindrical annular shell structure of liquid or gas.These vibrations
And its noise can bring extremely serious influence for equipment even whole system, therefore grind to cylindrical annular shell vibration noise
Study carefully, precise measurement and control are just particularly important.
During studying the vibration detection and vibration control of cylindrical annular shell, vibration detection device and method, vibration
Dynamic control device and method has very important importance in selection and implementation, and wherein the perception of vibration detection link department is tested
The function of object vibrational state, vibration control link department respond the function of measured object vibrational state.Therefore, vibration detection device, vibration
The type selecting of dynamic control device and the implementation of corresponding method for detecting vibration, vibration control method are particularly important.
Utility model content
The shortcomings that in order to overcome the vibration detection and control technology of cylindrical annular shell structure in the prior art and deficiency, this
Utility model provides a kind of cylindrical annular shell vibration detection control device of view-based access control model.
The present apparatus is used using the binocular vision system of a pair of of CCD camera composition as main vibration detecting part, energy
Instant feeds back to computer for the vibration information of testee；Select inertia mass vibration excitor and two piezoelectric ceramic actuators
As vibration control part, Multi-sensor Fusion, which is able to achieve, is precisely controlled the vibration of controlled object.
The utility model adopts the following technical solution:
A kind of cylindrical annular shell vibration detection control device of view-based access control model, including cylindrical annular shell body part,
Vibration detecting part and drive control part；
The cylindrical annular shell body part includes cylindrical annular shell, and the cylindrical annular shell passes through hold-down support
It is fixed on experimental bench, the outer surface of the cylindrical annular shell is equipped with multiple index points；
The vibration detecting part includes a pair of of CCD camera, piezoelectric transducer, charge amplifier, A/D capture card and calculating
Machine, the pair of CCD camera are arranged in the top of cylindrical annular shell, multiple index points CCD camera within sweep of the eye, institute
State the inner surface that cylindrical annular shell is arranged in piezoelectric transducer, the vibration signal warp of piezoelectric transducer detection cylinder annular shell
Computer is inputted after crossing charge amplifier and A/D capture card, the CCD camera is connect with computer；
The drive control part includes inertia mass vibration excitor unit and piezoelectric ceramic actuator unit；
The inertia mass vibration excitor unit includes inertia mass vibration excitor, power amplifier and signal generator, described
The setting of inertia mass vibration excitor is in cylindrical annular shell outer surface, signal generator and power amplifier and inertia mass vibration excitor
It is sequentially connected；
The piezoelectric ceramic actuator unit includes piezoelectric ceramic actuator, amplifying circuit and D/A converter, the calculating
Machine output signal moves piezoelectric ceramic actuator, the piezoelectric ceramic actuator setting by D/A converter and amplifying circuit rear-guard
In the outer surface of cylindrical annular shell.
The multiple index point is equidistantly attached to the middle position of cylindrical annular shell；
The piezoelectric transducer is made of multi-disc piezoelectric ceramic piece, the outer surface index point position one with cylindrical annular shell
One is corresponding.
The inertia mass vibration excitor is located at the middle position of cylindrical annular shell, and mounting plane is parallel to experimental bench.
The piezoelectric ceramic actuator is specially two, is symmetrically mounted on the two sides of inertia mass vibration excitor.
Further include constraint baffle, constrains baffle plate setting at the both ends of cylindrical annular shell.
The present apparatus further includes truss and truss support, and the truss support is fixed on experimental bench, the truss and truss
Support connection is horizontally mounted in right above cylindrical annular shell.
The cylindrical annular shell with a thickness of 0.3mm.
The utility model has the beneficial effects that
(1) the utility model, thus can be to cylindrical annular shell by measuring multiple index points in different location
Multi-modes are detected, compared to the prior art, it is advantageous that: it is non-contact with testee, do not influence testee
Dynamic property；System structure is simple, easily operated；Can multiple spot detection, reduce experimental error, improve measurement accuracy etc.；
(2) use inertial exciter and two piezoelectric ceramic actuators as vibration control part, this multisensor melts
The control model of conjunction can accurately control cylindrical annular shell body part, have fast response time, measurement accuracy
High, the advantages that error is small；
(3) use inertial exciter as excitation input equipment, good, bandwidth, environmental suitability with stability
By force, the advantages that low consumption, the performance of the present apparatus can be effectively improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the index point distribution map of the utility model；
Fig. 3 is the main view of Fig. 1；
Fig. 4 is the top view of Fig. 1；
Fig. 5 is the left view of Fig. 1.
Specific embodiment
Below with reference to examples and drawings, the utility model is described in further detail, but the reality of the utility model
It is without being limited thereto to apply mode.
Embodiment
As Figure 1-Figure 5, the cylindrical annular shell vibration detection control device of a kind of view-based access control model, including cylindrical annular
Shell body part, vibration detecting part and drive control part；
The cylindrical annular shell body part includes cylindrical annular shell 1, hold-down support 7, experimental bench 2, baffle 17, institute
Experimental bench aluminum profile seat is stated, whole device is used to support.The hold-down support is symmetrically disposed on experimental bench by spiral marking connection,
The cylindrical annular shell is lain in a horizontal plane on hold-down support in such a way that circular arc connects, and both ends hold-down support only provides vertically about
Beam；The baffle is mounted on experimental bench, and position is respectively at close to the both ends of cylindrical annular shell, for blocking cylindrical annular
The lateral bounce of shell.
The vibration detecting part includes a pair of of CCD camera 6, piezoelectric transducer 9, charge amplifier 14, A/D capture card 15
And computer 16；
The outer surface of the cylindrical annular shell is equipped with multiple index points, multiple index point forming arrays, multiple index points
Equidistantly be attached to the middle position of cylindrical annular shell, index point a pair of of CCD camera within sweep of the eye, further include for solid
Truss 5 and truss support 8 needed for fixed a pair of CCD camera, the truss support are fixed on experimental bench by spiral marking connection, purlin
Frame is horizontally mounted in right above cylindrical annular shell by the spiral marking connection between truss support, and a pair of of CCD camera is mounted on purlin
The middle position of frame 5, camera lens face the index point of cylindrical annular shell outer surface attachment, and a pair of of CCD camera passes through USB
Data line is connect with computer.
By the multiple index points in different location of measurement, the multi-modes of cylindrical annular shell can be detected,
Compared to the prior art, it is advantageous that: it is non-contact with testee, do not influence the dynamic property of testee；System structure
Simply, easily operated；Can multiple spot detection, reduce experimental error, improve measurement accuracy etc..
The piezoelectric transducer is made of excessively a piezoelectric ceramic piece, and piezoelectric ceramic piece is attached to the inner wall of cylindrical annular shell,
Space coordinate with index point in the position of the outer surface of cylindrical annular shell is identical, and corresponds.
The vibration signal of the cylindrical annular shell of piezoelectric transducer detection need to amplify by charge amplifier, adopt by A/D
Computer is transferred to after truck acquisition.
The drive control part includes inertia mass vibration excitor unit and piezoelectric ceramic actuator unit；
The inertia mass vibration excitor unit includes inertia mass vibration excitor 4, power amplifier 10 and signal generator 11,
The inertia mass vibration excitor is mounted on the outer surface of cylindrical annular shell, and centrally located, the centre in the present embodiment
Position is among the long axis of cylindrical annular shell, and mounting plane is tangential on cylindrical annular shell outer surface and is parallel to experiment
Platform.
The piezoelectric ceramic actuator unit includes piezoelectric ceramic actuator 3, amplifying circuit 12 and D/A converter 13, meter
Calculation machine is compared after processing two kinds of vibration informations and obtains control signal, exports D/A converter and amplifying circuit drives piezoelectricity
Ceramic driver controls cylindrical annular shell, to realize the vibration control to cylindrical annular shell.
Use inertia mass vibration excitor and two piezoelectric ceramic actuators as vibration control part, this multisensor melts
The control model of conjunction can accurately control cylindrical annular shell body part, have fast response time, measurement accuracy
High, the advantages that error is small.
The control process of the utility model are as follows:
Signal generator issues vibration signal, and inertia mass vibration excitor is sent after power amplifier amplifies, is further swashed
Encourage the vibration of cylindrical annular shell.
During the vibration of cylindrical annular shell, a pair of of CCD camera detects its vibration information, while multiple piezoelectric sensings
Device detection vibration information compares.
The vibration information of the piezoelectric transducer detection passes after converting via the amplification of charge amplifier 14 and A/D capture card 15
It send into computer.
Computer compares and analyzes the vibration information of vibration information and the piezoelectric transducer detection of CCD camera, thus
More accurate vibration information is obtained, control signal is obtained, control signal is converted through D/A converter, is driven after amplifying circuit amplification
Piezoelectric ceramic actuator inhibits vibration.
By changing control parameter, repetition test obtains many experiments as a result, obtaining the vibration characteristics of cylindrical annular shell
And control effect.
In the present embodiment, measurand cylindrical annular shell length is 980mm, outer diameter 200mm, with a thickness of 0.3mm,
Material selection aluminium alloy, density of material 2770kg/m3, Poisson's ratio 0.31, elasticity modulus 193GPa.
Piezoelectric ceramic actuator length is 40mm, width 20mm, is highly 0.5mm, and material type selects PZT-5H, is situated between
Electric constant is 3200, piezoelectric charge coefficient 640pC/N, voltage constant -9.3 × 10-3V·m/N；Inertia mass vibration excitor is selected
The model ADD-45N type inertia mass vibration excitor of Micromega company production, oscillation effective range are 2Hz~2kHz, tool
Have the advantages that stability is good, environmental suitability is strong, low consumption.
CCD camera selects the CCD camera of Ying Meijing company production, model The Imaging Source DFK
21BU04USB2.0 colour industrial camera, image resolution ratio are 640 × 480 pixels, frame rate 60fps；Camera lens is selected
The industrial lens of Computar company production, model M1614-MP, lens focus 16mm, maximum imaging size are 8.8mm
× 6.6mm, resolution ratio 100lpm, interface type are C- interface；Piezoelectric transducer length is 40mm, width 20mm, height
For 0.5mm, material type selects PZT-5H, dielectric constant 3200, piezoelectric charge coefficient 640pC/N, voltage constant -9.3
×10-3V·m/N。
D/A converter selects the model ISL5857 type high-speed d/a converter of Intersil company production, resolution ratio
It is 12, maximum conversion ratio is 260MSPS, and voltage 3.3V, temperature range is -40 DEG C~85 DEG C；A/D capture card is selected
ISLA222S12 type speedy carding process ADC, resolution ratio be 12, maximum conversion ratio position 125MSPS, temperature range be -40 DEG C~
85℃；Computer selects the IPC610 cabinet of Taiwan Advantech company production, PCA-6006 mainboard, Pentium IV 2.4G
Intel CPU。
Dotted line indicates the line relationship between each equipment in Fig. 1.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821619828.5U CN208847330U (en) | 2018-09-30 | 2018-09-30 | A vision-based vibration detection and control device for cylindrical annular thin shell |
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| CN201821619828.5U CN208847330U (en) | 2018-09-30 | 2018-09-30 | A vision-based vibration detection and control device for cylindrical annular thin shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186742A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | A kind of the cylindrical annular shell vibration detection control device and method of view-based access control model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186742A (en) * | 2018-09-30 | 2019-01-11 | 华南理工大学 | A kind of the cylindrical annular shell vibration detection control device and method of view-based access control model |
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Granted publication date: 20190510 Termination date: 20210930 |