CN214202166U - A low frequency vibration control system - Google Patents
A low frequency vibration control system Download PDFInfo
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- CN214202166U CN214202166U CN202120131560.6U CN202120131560U CN214202166U CN 214202166 U CN214202166 U CN 214202166U CN 202120131560 U CN202120131560 U CN 202120131560U CN 214202166 U CN214202166 U CN 214202166U
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- LZDYZEGISBDSDP-UHFFFAOYSA-N 2-(1-ethylaziridin-1-ium-1-yl)ethanol Chemical group OCC[N+]1(CC)CC1 LZDYZEGISBDSDP-UHFFFAOYSA-N 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 abstract description 12
- 238000011160 research Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 4
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- 230000005284 excitation Effects 0.000 description 2
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- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
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Abstract
本实用新型公开了一种低频振动控制系统，包括主控模块、驱动器、第一电机、数据采集板卡以及振动组件，振动组件包括丝杆、导轨、滑台以及连接板，主控模块依次通过数据采集板卡和驱动器连接至第一电机，第一电机还与丝杆连接，丝杆设置在导轨上，滑台与导轨进行滑动连接，连接板设置在滑台的上表面，丝杆与滑台进行传动连接，第一电机用于通过丝杆带动滑台沿导轨滑动，连接板用于固定传感器。本实用新型结构简单、成本低廉，在降低实验成本的同时，提高了低频振动的控制精度以及测量精度，有利于各中小型科研院所以及高校进行低频振动实验的研究。本实用新型可广泛应用于振动测试技术领域。
The utility model discloses a low-frequency vibration control system, which comprises a main control module, a driver, a first motor, a data acquisition board and a vibration assembly. The vibration assembly includes a screw rod, a guide rail, a sliding table and a connecting plate. The data acquisition board and the driver are connected to the first motor, the first motor is also connected with the lead screw, the lead screw is arranged on the guide rail, the sliding table is slidably connected with the guide rail, the connecting plate is arranged on the upper surface of the sliding table, and the screw rod is connected with the sliding table. The table is connected by transmission, the first motor is used to drive the sliding table to slide along the guide rail through the screw rod, and the connecting plate is used to fix the sensor. The utility model has the advantages of simple structure and low cost, and improves the control precision and measurement precision of low-frequency vibration while reducing the experiment cost, which is beneficial to the research of low-frequency vibration experiments in small and medium-sized scientific research institutes and universities. The utility model can be widely used in the technical field of vibration testing.
Description
Technical Field
The utility model belongs to the technical field of the vibration test technique and specifically relates to a low frequency vibration control system.
Background
At present, vibration tables generally adopted at home and abroad are mainly divided into three types according to vibration excitation modes: mechanical vibration table, fluid pressure type shaking table and electrodynamic type shaking table, wherein mechanical type and fluid pressure type shaking table are often used in the low frequency, ultra low frequency vibration experiment, and electrodynamic type shaking table is often used in the high frequency vibration experiment. In civil engineering environments, high-rise buildings, bridges and energy harvesting are involved, usually at low or ultra-low frequencies.
The working frequency of the mechanical vibration table is only limited to low frequency, the upper limit frequency is about 20Hz, the maximum acceleration is about 3g, and the acceleration waveform distortion is large; although the measurable frequency range of the existing hydraulic vibration table is low, the existing hydraulic vibration table is expensive in manufacturing cost, complex in equipment and inconvenient to operate, and ordinary scientific research institutions or colleges cannot bear high expenses, and are usually manually controlled, so that experimental measurement errors are easily caused; the electrodynamic type shaking table adopts the electromagnetic induction technology to produce the vibration, and the low frequency, the ultralow frequency range that can measure are very limited, and cause signal distortion easily, and the measuring result is not accurate enough.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a: the low-frequency vibration control system is simple in structure, low in cost and accurate in measurement.
The utility model adopts the technical proposal that:
the utility model provides a low frequency vibration control system, includes host system, driver, first motor, data acquisition integrated circuit board and vibration subassembly, the vibration subassembly includes lead screw, guide rail, slip table and connecting plate, host system loops through the data acquisition integrated circuit board with the driver is connected to first motor, first motor still with the lead screw is connected, the lead screw sets up on the guide rail, the slip table with the guide rail carries out sliding connection, the connecting plate sets up the upper surface of slip table, the lead screw with the slip table carries out the transmission and connects, first motor is used for passing through the lead screw drives the slip table is followed the guide rail slides, the connecting plate is used for fixed sensor.
Further, first motor setting is in the one end of guide rail, first motor is including motor rotor and the motor stator that matches the setting, motor rotor with lead screw fixed connection, motor stator with guide rail fixed connection.
Further, the screw is a ball screw.
Furthermore, a plurality of mounting holes are formed in the connecting plate and used for fixing the sensor through screws.
Furthermore, two ends of the guide rail are respectively provided with a support, and the screw rod is arranged between the two supports.
Further, the driver is an ASDA-B2 driver.
Further, the first motor is an ECMA servo motor.
Further, the data acquisition board card is an NI9263 data acquisition board card.
Further, the main control module is a computer.
The utility model has the advantages that: the low frequency vibration control system includes host system, the driver, first motor, data acquisition integrated circuit board and vibration subassembly, the vibration subassembly includes the lead screw, the guide rail, slip table and connecting plate, set up low frequency vibration sensor in connecting plate department during the use, send control signal for the data acquisition integrated circuit board through host system, and then send corresponding control command to the driver through the data acquisition integrated circuit board, rotate by the first motor of driver drive, thereby it is rotatory to drive the lead screw, and then make the slip table slide along the guide rail, produce the low frequency vibration, can realize the accurate check to low frequency sensor, the collection of vibration energy and relevant low frequency or ultra low frequency vibration experiment. The utility model discloses simple structure, low cost when reducing the experiment cost, have improved low frequency vibration's control accuracy and measurement accuracy, are favorable to each middle-size and small-size scientific research institute and colleges and universities to carry out the research of low frequency vibration experiment.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a low-frequency vibration control system according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of a low-frequency vibration control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vibration assembly according to an embodiment of the present invention.
Reference numerals:
10. a main control module; 20. a data acquisition board card; 30. a driver; 40. a first motor; 51. a screw rod; 52. a guide rail; 53. a sliding table; 54. a connecting plate; 55. and (4) a support.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1, 2 and 3, the embodiment of the utility model provides a low frequency vibration control system, including host system 10, driver 30, first motor 40, data acquisition integrated circuit board 20 and vibration subassembly, the vibration subassembly includes lead screw 51, guide rail 52, slip table 53 and connecting plate 54, host system 10 loops through data acquisition integrated circuit board 20 and driver 30 and is connected to first motor 40, first motor 40 still is connected with lead screw 51, lead screw 51 sets up on guide rail 52, slip table 53 carries out sliding connection with guide rail 52, connecting plate 54 sets up the upper surface at slip table 53, lead screw 51 carries out the transmission with slip table 53 and is connected, first motor 40 is used for driving slip table 53 through lead screw 51 and slides along guide rail 52, connecting plate 54 is used for fixed sensor.
As shown in fig. 1, the embodiment of the present invention provides a structural block diagram of a low-frequency vibration control system, it can be understood that the main control module 10, the data acquisition board 20, the driver 30 and the first motor 40 are connected by signals, and the first motor 40 is connected with the lead screw 51 by mechanical transmission.
Specifically, a rotating shaft of the first motor 40 is connected with the screw rod 51, the screw rod 51 is in roller connection with the sliding table 53, the sliding table 53 is fixedly connected with the connecting plate 54 through screws, the sliding table 53 is in sliding connection with the guide rail 52 through a sliding block, and the first motor 40 drives the screw rod 51 to rotate so that the sliding table 53 can slide along the guide rail 52. During the use, the low-frequency vibration sensor is arranged at the connecting plate 54, the control signal is sent to the data acquisition board card 20 through the main control module 10, then the corresponding control instruction is sent to the driver 30 through the data acquisition board card 20, the driver 30 drives the first motor 40 to rotate, so that the screw rod 51 is driven to rotate, the sliding table 53 slides along the guide rail 52, low-frequency vibration is generated, and accurate checking of the low-frequency sensor, collection of vibration energy and related low-frequency or ultra-low-frequency vibration experiments can be realized. The embodiment of the utility model provides a simple structure, low cost when reducing the experiment cost, have improved low frequency vibration's control accuracy and measurement accuracy, are favorable to each middle-size and small-size scientific research institute and colleges and universities to carry out the research of low frequency vibration experiment.
Referring to fig. 2, as a further alternative embodiment, the first motor 40 is disposed at one end of the guide rail 52, the first motor 40 includes a motor rotor and a motor stator that are disposed in a matching manner, the motor rotor is fixedly connected to the lead screw 51, and the motor stator is fixedly connected to the guide rail 52.
Specifically, a groove is carved on the motor rotor, the motor rotor is connected with the lead screw 51 through the groove and drives the lead screw 51 to rotate, and the housing of the first motor 40 is fixedly connected with the guide rail 52 through a flange screw, so that the fixed connection of the motor stator and the guide rail 52 is realized.
Further as an alternative embodiment, the screw 51 is a ball screw.
Specifically, the ball screw has high hardness, and is usually subjected to fine cutting after surface quenching to ensure excellent wear resistance. The ball screw is typically coupled to a drive member, and the rotation of the ball screw is driven directly or indirectly by a motor. A direct connection method can be adopted. The output shaft of the motor is connected with the screw rod through a special elastic coupling with the transmission ratio of 1, and can also be connected with the screw rod through other transmission links, such as synchronous belts, gears and the like.
The utility model discloses lead screw 51 has the helical pitch of two kinds of differences, is 10mm and 20mm respectively, can accomplish corresponding frequency amplitude's vibration test through the helical pitch of difference.
Alternatively, the rail 52 may be 2 meters in length.
Referring to fig. 3, as a further alternative embodiment, a plurality of mounting holes are provided on the connection plate 54, and the mounting holes are used for fixing the sensor by screws.
Specifically, as shown in fig. 3, the connecting plate 54 according to the embodiment of the present invention is a T-shaped connecting plate, and the bottom of the T-shaped connecting plate is fixedly connected to the upper surface of the sliding table 53, and can be fixed by screws; the T-shaped connecting plate is provided with a plurality of mounting holes for fixing the sensors through screws, and the side surfaces of the sensors fixed on the T-shaped connecting plate can be supported and are more stable; the material of the connecting plate 54 may be aircraft aluminum.
Referring to fig. 3, as a further alternative embodiment, the guide rail 52 is provided with a seat 55 at each end, and the screw 51 is disposed between the seats.
Specifically, the distance between the screw 51 and the guide rail 52 can be fixed by the arrangement of the two supports 55, so that the sliding table 53 can stably slide along the guide rail 52 under the driving action of the screw 51.
Further as an alternative embodiment, the drive 30 is an ASDA-B2 drive.
Further as an alternative embodiment, the first motor 40 is an ECMA servo motor.
Further as an optional implementation, the data acquisition board 20 is an NI9263 data acquisition board.
As a further alternative, the main control module 10 is a computer.
Specifically, the utility model discloses computer adopts l abview signal control system to control the operation to other subassemblies, compares traditional use signal generator and controls, and is more accurate.
The embodiment of the utility model provides an at first send sinusoidal voltage or other waveform excitation signal to NI9263 data acquisition integrated circuit board by the l abview control process preface of compiling in advance, NI9263 data acquisition integrated circuit board receives and sends corresponding signal to ASDA-B2 driver after the order again, ASDA-B2 driver handles back drive ECMA servo motor and rotates, ECMA servo motor drives the lead screw and rotates, make the slip table that is located on the lead screw carry out sharp back and forth movement, thereby can carry out relevant low frequency experiment through fixing the corresponding low frequency vibration sensor of installation on the T font connecting plate on the slip table.
The embodiment of the utility model provides a still have following advantage:
(1) the low-frequency vibration control system is convenient to build, and the required equipment is low in price, so that the system is suitable for teaching research experiments in various small and medium-sized research institutes and colleges.
(2) The lead is adjustable, and the vibration checking and energy collection power generation test of the sensor are facilitated.
(3) The control method of transmitting signals by a traditional signal generator and controlling the equipment by adopting a computer i-view programming is replaced, the experimental error is effectively reduced, the control is easy and convenient, and the safety of experimenters is guaranteed.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120131560.6U CN214202166U (en) | 2021-01-18 | 2021-01-18 | A low frequency vibration control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120131560.6U CN214202166U (en) | 2021-01-18 | 2021-01-18 | A low frequency vibration control system |
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| CN214202166U true CN214202166U (en) | 2021-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623923A (en) * | 2021-12-21 | 2022-06-14 | 浙江运达风电股份有限公司 | Verification test system and method for tower top low-frequency vibration sensor of wind turbine generator |
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2021
- 2021-01-18 CN CN202120131560.6U patent/CN214202166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623923A (en) * | 2021-12-21 | 2022-06-14 | 浙江运达风电股份有限公司 | Verification test system and method for tower top low-frequency vibration sensor of wind turbine generator |
| CN114623923B (en) * | 2021-12-21 | 2023-09-01 | 浙江运达风电股份有限公司 | Verification test system and method for low-frequency vibration sensor at tower top of wind turbine generator |
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