CN212569526U - Many flexible roof beams of removal coupling vibration detection device of spring coupling - Google Patents
Many flexible roof beams of removal coupling vibration detection device of spring coupling Download PDFInfo
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- CN212569526U CN212569526U CN202021702183.9U CN202021702183U CN212569526U CN 212569526 U CN212569526 U CN 212569526U CN 202021702183 U CN202021702183 U CN 202021702183U CN 212569526 U CN212569526 U CN 212569526U
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Abstract
The utility model discloses a spring-connected mobile multi-flexible beam coupling vibration detection device, which comprises a mobile multi-flexible beam body part, a lead screw transmission part, a vibration signal detection part and a drive control part; the movable flexible beam body part comprises a flexible beam, a spring and the like, two ends of the flexible beam are free, one end of the flexible beam is coupled and connected through the spring, and the center of the flexible beam is fixed on the clamping plate and can move along with the sliding block; the coupled vibration signal of the flexible beam structure is detected by using a piezoelectric sheet sensor, a laser displacement sensor and an acceleration sensor, and a guide screw driven by a servo motor and a piezoelectric sheet driver are used as actuators for inhibiting vibration. The device can be used for researching the influence of springs with different lengths and rigidity on the coupling vibration characteristics of the flexible beams, and realizes real-time detection and active control on the coupling vibration of the multiple flexible beams.
Description
Technical Field
The utility model relates to a flexible construction coupling control field, concretely relates to many flexible roof beam coupling vibration detection device of spring coupling's removal.
Background
The flexible structure has light weight, low energy consumption and flexible operation, and can be widely applied to the fields of space engineering and industrial production. The flexible structure also has the characteristics of low rigidity, high flexibility and dense low-frequency modes, and when the multiple flexible structures work together, the coupling vibration which is not easy to attenuate is easy to generate under the action of external excitation, so that the accuracy and stability of the operation of the system are influenced. Therefore, coupled vibration detection and active control methods of flexible structures are the focus of current research.
The laser displacement sensor is high in measurement accuracy, is in a non-contact measurement mode, cannot bring extra mass to the flexible beam structure, can reduce the influence on the vibration characteristic of the flexible beam, and achieves accurate measurement of coupling vibration of the movable multi-flexible beam structure.
The piezoelectric sheet driver has the characteristics of quick response, wide frequency band, good linearity, easiness in processing and the like, is widely applied to the field of vibration control of flexible structures such as flexible beams and has a good control effect.
The servo motor has the characteristics of high control precision, quick response, good dynamic characteristic, wide speed regulation range and simplicity and convenience in operation, controls the starting and stopping of the servo motor and the rotating speed of the servo motor through methods such as track planning and the like to reduce the impact of the flexible beam during moving for the large-amplitude coupled vibration of the attitude adjustment of the flexible beam, and can realize the active control of the large-amplitude coupled vibration. And the influence of different spring characteristics on the coupling vibration characteristics of the movable flexible beam can be researched by adjusting the length and the rigidity of the spring.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming and the not enough that prior art exists, the utility model provides a many flexible roof beam coupling vibration detection device of removal of spring coupling realizes real-time detection and active control to removing many flexible roof beam coupling vibrations.
The utility model adopts the following technical scheme:
a spring-connected mobile multi-flexible-beam coupling vibration detection device comprises a mobile multi-flexible-beam body part, a lead screw transmission part, a vibration signal detection part and a drive control part;
the movable multi-flexible beam body part comprises flexible beams, clamping plates, clamping blocks, springs, spring connecting plates, spring supports, a first base plate, a second base plate and a third base plate, wherein the number of the second base plate is two, the two second base plates are arranged on the first base plate in parallel, the number of the flexible beams is two, the centers of the two flexible beams are fixed on the second base plate through the clamping plates and the clamping blocks and move along with the second base plate in the horizontal direction, the third base plate is arranged on the second base plate, the two ends of the two flexible beams are free ends, one ends of the two flexible beams are connected through spring coupling, the other ends of the two flexible beams are suspended, the springs are fixed on the spring connecting plates, the flexible beams are enabled to generate coupling vibration, and the spring connecting plates are fixed on the;
the screw transmission body part comprises a servo motor, a guide rail screw, a first sliding block and a screw base plate, wherein the screw base plate is fixed on the experiment table, the guide rail screw is arranged on the screw base plate, the first sliding block is connected with the guide rail screw, the first base plate is arranged on the first sliding block, and the servo motor drives the guide rail screw to rotate so as to enable the first sliding block to move in the horizontal direction;
the vibration signal detection part comprises a piezoelectric sheet sensor, a laser displacement sensor, a guide rail, a second sliding block, an acceleration sensor, a charge amplifier, a terminal board, a motion control card and a computer, wherein the piezoelectric sheet sensor and the acceleration sensor are arranged on the flexible beam, the laser displacement sensor is arranged on the second sliding block through a sensor bracket, and the second sliding block is connected with the guide rail; the laser displacement sensor detects vibration signals of the coupling end of the flexible beam, the vibration signals are transmitted to the motion control card through the terminal board and then input into the computer, and bending vibration signals detected by the piezoelectric plate sensor and the acceleration sensor are amplified by the charge amplifier, transmitted to the motion control card through the terminal board and then input into the computer;
the drive control part comprises a lead screw drive control unit and a piezoelectric drive control unit;
the screw driving control unit comprises a servo motor driver connected with a servo motor, the servo motor is provided with an encoder for feeding motor rotation information back to the servo motor driver, the computer generates a control signal according to the feedback information, the control signal is input to the servo motor driver through a motion control card and a terminal board, the servo motor is controlled, and the first sliding block is driven to move in the horizontal direction;
the piezoelectric driving control unit comprises a piezoelectric piece driver and a piezoelectric amplification circuit, wherein the piezoelectric piece driver is arranged on the flexible beam, vibration signals collected by the piezoelectric piece sensor, the laser displacement sensor and the acceleration sensor are input into a computer, the computer obtains control signals, and the control signals are input into the piezoelectric amplification circuit through the motion control card and the terminal board to drive the piezoelectric piece driver.
Preferably, the piezoelectric sheet sensor is adhered to the center line of the flexible beam in the width direction and at a position 85mm away from the fixed end, the attitude angle is 0 degree, the piezoelectric sheet sensor is adhered to a single surface, and 1 sheet of the piezoelectric sheet sensor is adhered to the coupling end and the suspension end of each flexible beam, and the total number of the piezoelectric sheet sensor is 4.
Preferably, the acceleration sensor is arranged on the width direction central line of each flexible beam suspension end and is 60mm away from the free end.
Preferably, the piezoelectric piece driver comprises 16 piezoelectric ceramic pieces, eight pieces of piezoelectric ceramic pieces are pasted on each flexible beam, the distance between the eight pieces of piezoelectric ceramic pieces and the fixed position of the flexible beam is 25mm, the front surface and the back surface of the flexible beam are symmetrically pasted, 4 pieces of piezoelectric ceramic pieces are arranged on each surface, and the piezoelectric ceramic pieces are symmetrical about the central line of the flexible beam in the width direction.
Preferably, the two flexible beams are connected through springs, and each flexible beam is connected with the spring support through a spring.
Preferably, the device further comprises a travel switch, and the travel switch is located on the experiment table through a travel switch support.
A control process for a mobile multi-flexible-beam coupled vibration detection device includes the following steps:
firstly, respectively detecting coupled vibration and free vibration of a plurality of moving flexible beams by using a piezoelectric sheet sensor, a laser displacement sensor and an acceleration sensor to obtain corresponding measuring signals;
secondly, amplifying vibration signals detected by the piezoelectric sensor and the acceleration sensor through a charge amplifier, and transmitting the vibration signals to a motion control card through a terminal board, wherein an A/D conversion module in the motion control card converts analog signals into digital signals and inputs the digital signals into a computer; meanwhile, a vibration signal detected by the laser displacement sensor is transmitted to the motion control card through the terminal board, and an A/D conversion module in the motion control card converts an analog signal into a digital signal and inputs the digital signal into a computer;
thirdly, according to the vibration signal, the computer runs an active control algorithm to obtain a corresponding vibration control signal, the vibration control signal is output by a D/A conversion module of the motion control card, the signal is transmitted through a terminal board and amplified by a piezoelectric amplifying circuit, and the signal is output to a piezoelectric sheet driver to control the vibration of the flexible beam; meanwhile, the computer generates a corresponding control signal according to the vibration signal and the path plan, and drives the servo motor to rotate through a servo motor driver, so that the flexible beam connected with the first sliding block moves in the horizontal direction according to a preset track, and the control of the coupling vibration of the flexible beam connected with the spring is realized;
and fourthly, obtaining a plurality of experimental results through changing control parameters and repeated tests to obtain the coupling vibration characteristics and the control effect of the movable multi-flexible beam.
Preferably, the coupled vibration of the movable multi-flexible beam is realized through spring connection, and the length and the rigidity of the spring can be adjusted so as to research the influence of different spring characteristics on the coupled vibration characteristics of the movable beam.
The utility model has the advantages that:
(1) the utility model discloses a rational design and the arrangement of backing plate, the removal of setting up a spring coupling's many flexible roof beam coupling vibration detects and control experiment platform, and each item parameter such as flexible roof beam distance, spring characteristic of experiment platform is adjustable, provides the advantage for studying different spring length and rigidity to the influence of flexible roof beam coupling vibration characteristic.
(2) The utility model discloses a laser displacement sensor carries out non-contact to the flexible roof beam coupling vibration and measures, and measurement accuracy is high and does not influence the vibration characteristic of coupling flexible roof beam.
(3) The utility model discloses a mode composite control flexible beam structure's of servo motor drive and piezoelectric patches driver combination vibration, complementary independent control's shortcoming, the track planning method through servo motor drive reduces the vibration of flexible beam and the residual vibration of piezoelectric patches drive suppression flexible beam fast from the source, realizes the quick control to the vibration of flexible coupling roof beam.
(4) The utility model discloses a detection method of multisensor combination can realize the accurate stable measurement to the flexible beam vibration signal.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the mobile multi-flexible beam of FIG. 1;
FIG. 3 is a schematic view of the structure of the screw driving part of FIG. 1;
FIG. 4 is a front view of FIG. 1;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a right side view of FIG. 1;
fig. 7 is a vibration control flow block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1-6, a spring-connected mobile multi-flexible-beam coupled vibration detection device includes a mobile multi-flexible-beam body portion, a lead screw transmission portion, a vibration signal detection portion, and a drive control portion;
the movable multi-flexible beam body part comprises a flexible beam 15, a clamping plate 21, a clamping block 20, a spring 7, a spring connecting plate 1, a spring support 9, a lifting eye screw 10, a lifting eye nut 14, a first base plate 16, a second base plate 6 and a third base plate 8; the first base plate is arranged on the first sliding block 33 and can move along with the first sliding block in the horizontal direction, and only one first base plate is arranged; the two second backing plates are arranged on the first backing plate in parallel and can move along with the first backing plate in the horizontal direction, and the mounting positions of the second backing plates can be adjusted. The splint are fixed on the second backing plate, and the flexible roof beam is two, fixes on the second backing plate through splint and clamp respectively soon, and fixed position is located the intermediate position of flexible roof beam, can remove at the horizontal direction along with the second backing plate, and the third backing plate overlap joint can be adjustable along with the second backing plate at horizontal direction removal and mounted position on the second backing plate. The two flexible beams are made of the same material, and have the same size and other arrangement elements.
The two ends of the flexible beam are free ends, one end of the flexible beam is connected through spring coupling, the other end of the flexible beam is suspended, the spring support 9 with the adjustable installation position and the spring connecting plate are arranged on the third base plate, and the spring is fixed on the flexible beam and the spring connecting plate through a lifting ring screw and a lifting ring nut, so that the flexible beam generates coupling vibration.
In this embodiment, connect through a spring between two flexible roof beams, two flexible roof beams are connected with the spring connecting plate through a spring respectively, and three springs are located same straight line.
In the embodiment, when the flexible beam generates vibration, one end of the flexible beam is coupled and vibrated by the spring, and the other end of the flexible beam is free to bend and vibrate; through the reasonable design of first backing plate, second backing plate and third backing plate, build many flexible roof beam moving platform, provide the advantage for removing many flexible roof beam coupling vibration signal's detection and control.
-the screw transmission part comprises:
the device comprises a servo motor 11, a motor flange 12, a coupler 13, a guide rail screw 25, a first sliding block 33 and a screw base plate 26; the guide rail screw is arranged on the guide rail base plate, and the first sliding block is connected with the guide rail screw; the servo motor drives the guide rail lead screw to rotate through the coupler, so that the first sliding block moves in the horizontal direction.
The vibration signal detecting section includes:
the device comprises a piezoelectric sheet sensor 17, a laser displacement sensor 5, a sensor bracket 4, a guide rail 3, a second sliding block 2, an acceleration sensor 19, a charge amplifier 27, a terminal board 29, a motion control card 30 and a computer 31; the coupling end of the flexible beam 15 detects a vibration signal through the laser displacement sensor 5 and the piezoelectric sheet sensor 17; the suspension end of the flexible beam 15 detects a vibration signal through an acceleration sensor 19 and a piezoelectric sheet sensor 17; the laser displacement sensor 5 is arranged on the second sliding block 2 through the sensor support 4, and the second sliding block 2 is connected with the guide rail 3, so that the distance between the laser displacement sensor 5 and the flexible beam 15 can be conveniently adjusted; the piezoelectric sheet sensor 17 is pasted on the position which is 85mm away from the fixed end and on the central line of the beam width direction, the attitude angle is 0 degree, the piezoelectric sheet sensor is pasted on one side, 1 sheet is pasted on the upper coupling end and the suspension end of each flexible beam, and the total number is 4; the acceleration sensors 19 are arranged at positions 60mm away from the free end on the central line of the width direction of each flexible beam suspension end, and the number of the acceleration sensors is 2; the flexible beam coupling vibration signal detected by the laser displacement sensor is transmitted to the motion control card 30 through the terminal board, and is transmitted to the computer for processing after being converted by the A/D conversion module; the bending vibration signals detected by the piezoelectric sheet sensor and the acceleration sensor are amplified by the charge amplifier, transmitted to the motion control card through the terminal board, converted by the A/D conversion module in the motion control card, and then input to the computer for processing.
The driving control part comprises a lead screw driving control unit and a piezoelectric driving control unit;
firstly, lead screw drive control unit: comprises a servo motor driver 32, a travel switch 22 and a travel switch bracket 23; the servo motor driver 32 is connected with the servo motor 11 in a speed control or position control mode, and an encoder of the servo motor 11 can feed back motor rotation information to the servo motor driver; the computer runs a control algorithm according to the feedback information to generate a corresponding control signal, the control signal is input to a servo motor driver through D/A conversion module conversion of the motion control card and information transmission of a terminal board, and the servo motor is controlled to rotate to drive the first sliding block to move in the horizontal direction according to a certain track, so that the movement and vibration of the flexible beam are controlled; the travel switch is arranged on the experiment table through the travel switch bracket to limit the maximum displacement of the flexible beam in the horizontal direction;
secondly, the piezoelectric driving control unit: comprises a piezoelectric sheet driver 18 and a piezoelectric amplifying circuit 28; the piezoelectric sheet driver is pasted at the position of the flexible beam, which is 25mm away from the fixed end, two sides of the fixed end are symmetrically pasted on two sides, the attitude angle is 0 degree and is symmetrical about the central line of the beam in the width direction, 4 sheets are arranged on each side, and 16 sheets are counted; vibration signals collected by the piezoelectric sheet sensor, the laser displacement sensor and the acceleration sensor are input into a computer, the computer runs an active control algorithm to generate corresponding control signals, the control signals are input into a piezoelectric amplifying circuit to amplify the analog signals through D/A conversion module conversion of a motion control card and transmission of a terminal board, and then the analog signals are output to a piezoelectric sheet driver, so that residual vibration of the flexible beam is suppressed.
The embodiment can drive the flexible beam to move in the horizontal direction through the servo motor and the guide rail lead screw so as to control the movement and the vibration of the flexible beam; meanwhile, the piezoelectric sheet driver can be used for restraining the vibration of the flexible beam, and the dual control of the vibration is realized.
In the device, the first base plate is horizontally arranged, the two second base plates are vertically arranged, and the third base plate is horizontally arranged on the two second base plates.
As shown in fig. 7, the control process of the above device includes the following steps:
firstly, respectively detecting coupled vibration and free vibration of a plurality of moving flexible beams by using a piezoelectric sheet sensor, a laser displacement sensor and an acceleration sensor to obtain corresponding measuring signals;
secondly, amplifying vibration signals detected by the piezoelectric sensor and the acceleration sensor through a charge amplifier, and transmitting the vibration signals to a motion control card through a terminal board, wherein an A/D conversion module in the motion control card converts analog signals into digital signals and inputs the digital signals into a computer; meanwhile, a vibration signal detected by the laser displacement sensor is transmitted to the motion control card through the terminal board, and an A/D conversion module in the motion control card converts an analog signal into a digital signal and inputs the digital signal into a computer;
thirdly, according to the vibration signal, the computer runs an active control algorithm to obtain a corresponding vibration control signal, the vibration control signal is output by a D/A conversion module of the motion control card, the signal is transmitted through a terminal board and amplified by a piezoelectric amplifying circuit, and the signal is output to a piezoelectric sheet driver to control the vibration of the flexible beam; meanwhile, the computer generates a corresponding control signal according to the vibration signal and the path plan, and drives the servo motor to rotate through a servo motor driver, so that the flexible beam connected with the first sliding block moves in the horizontal direction according to a preset track, and the control of the coupling vibration of the flexible beam connected with the spring is realized;
and fourthly, obtaining a plurality of experimental results through changing control parameters and repeated tests to obtain the coupling vibration characteristics and the control effect of the movable multi-flexible beam.
The dashed lines in fig. 1 indicate the wiring relationships between the various devices, and the directional arrows indicate the direction of propagation of the detection and control signal streams.
In this embodiment, the flexible beam is made of thin epoxy resin plate with a geometric dimension of 1700mm × 150mm × 2mm and an elastic modulus of Ep26.8Gpa, and a density of ρ 1980kg/m3。
The piezoelectric sheet driver and the piezoelectric sheet sensor are made of piezoelectric ceramic materials, wherein the geometric dimension of the piezoelectric sheet driver is 60mm multiplied by 25mm multiplied by 2mm, the geometric dimension of the piezoelectric sheet sensor is 50mm multiplied by 20mm multiplied by 2mm, and the piezoelectric sheet driver and the piezoelectric sheet sensor are pasted on the flexible beam in a sheet shape. The elastic modulus and the piezoelectric strain constant of the piezoelectric ceramic material are respectively Ep＝63Gpa，d31＝166pm/V。
The laser displacement sensor is a high-precision laser displacement sensor which is manufactured by PANASONIC company and has the model of HG-C1100, the measuring center distance is 100mm, and the measuring range is +/-35 mm; the acceleration sensor is a 8310B2 type capacitive sensor from Kistler corporation, with a nominal sensitivity of 1000mv/g and a measurement frequency range of 0-250 Hz.
The servo motor is an alternating current servo motor of Mitsubishi motor company with the model number of HC-KFS43, and the power and the maximum rotating speed of the alternating current servo motor are respectively 400W and 3000 r/min; the servo motor driver is a Mitsubishi motor type MR-J2S-40A servo driver.
The guide rail lead screw adopts a KR55 type rolling guide rail combined unit of THK company, and is provided with two long nut sliders, so that gapless high-rigidity guidance can be realized, and the requirement of high-precision feeding is met; the guide rail and the second sliding block are selected from an SGR10E guide rail of ZHK company and a matched SGB10E sliding block.
The laboratory bench is formed through the angle bar equipment by three kinds of length respectively for 680mm, 500mm, 480 mm's aluminium alloy plate, and the laboratory bench terminal surface is a 1120mm 600mm 10 mm's aluminium alloy plate, is connected with the aluminium alloy through the screw.
The charge amplifier is a YE5850 type charge amplifier of Jiangsu Union energy electronics, Inc.; the piezoelectric amplifying circuit can be a piezoelectric amplifier with the model of APEX-PA241DW or APEX-PA240CX, the amplification factor can reach 52 times, namely-5V- +5V is amplified to-260V- +260V, and a high-voltage signal is output to drive the piezoelectric ceramic piece to inhibit vibration.
The motion control card is selected from GTS-400-PV-PCI series motion controllers produced by Gao Gu company, is provided with a standard PCI bus interface and 4 paths of controllable shaft numbers, and can provide analog input and output in the range of-10V to + 10V; the CPU model of the selected computer is Pentium G6202.6 GHz, the memory is 4G, and a PCI slot is arranged in the mainboard, and a motion control card can be installed.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (6)
1. A spring-connected mobile multi-flexible-beam coupling vibration detection device is characterized by comprising a mobile multi-flexible-beam body part, a lead screw transmission part, a vibration signal detection part and a drive control part;
the movable multi-flexible beam body part comprises flexible beams, clamping plates, clamping blocks, springs, spring connecting plates, spring supports, a first base plate, a second base plate and a third base plate, wherein the number of the second base plate is two, the two second base plates are arranged on the first base plate in parallel, the number of the flexible beams is two, the centers of the two flexible beams are fixed on the second base plate through the clamping plates and the clamping blocks and move along with the second base plate in the horizontal direction, the third base plate is arranged on the second base plate, the two ends of the two flexible beams are free ends, one ends of the two flexible beams are connected through spring coupling, the other ends of the two flexible beams are suspended, the springs are fixed on the spring connecting plates, the flexible beams are enabled to generate coupling vibration, and the spring connecting plates are fixed on the;
the screw transmission body part comprises a servo motor, a guide rail screw, a first sliding block and a screw base plate, wherein the screw base plate is fixed on the experiment table, the guide rail screw is arranged on the screw base plate, the first sliding block is connected with the guide rail screw, the first base plate is arranged on the first sliding block, and the servo motor drives the guide rail screw to rotate so as to enable the first sliding block to move in the horizontal direction;
the vibration signal detection part comprises a piezoelectric sheet sensor, a laser displacement sensor, a guide rail, a second sliding block, an acceleration sensor, a charge amplifier, a terminal board, a motion control card and a computer, wherein the piezoelectric sheet sensor and the acceleration sensor are arranged on the flexible beam, the laser displacement sensor is arranged on the second sliding block through a sensor bracket, and the second sliding block is connected with the guide rail; the laser displacement sensor detects vibration signals of the coupling end of the flexible beam, the vibration signals are transmitted to the motion control card through the terminal board and then input into the computer, and bending vibration signals detected by the piezoelectric plate sensor and the acceleration sensor are amplified by the charge amplifier, transmitted to the motion control card through the terminal board and then input into the computer;
the drive control part comprises a lead screw drive control unit and a piezoelectric drive control unit;
the screw driving control unit comprises a servo motor driver connected with a servo motor, the servo motor is provided with an encoder for feeding motor rotation information back to the servo motor driver, the computer generates a control signal according to the feedback information, the control signal is input to the servo motor driver through a motion control card and a terminal board, the servo motor is controlled, and the first sliding block is driven to move in the horizontal direction;
the piezoelectric driving control unit comprises a piezoelectric piece driver and a piezoelectric amplification circuit, wherein the piezoelectric piece driver is arranged on the flexible beam, vibration signals collected by the piezoelectric piece sensor, the laser displacement sensor and the acceleration sensor are input into a computer, the computer obtains control signals, and the control signals are input into the piezoelectric amplification circuit through the motion control card and the terminal board to drive the piezoelectric piece driver.
2. The device for detecting coupling vibration of a moving multi-flexible beam according to claim 1, wherein the piezoelectric sheet sensor is attached to a position 85mm away from the fixed end on the center line in the width direction of the flexible beam, the attitude angle is 0 ° and the piezoelectric sheet sensor is attached to one side, 1 sheet is attached to each of the upper coupling end and the suspension end of each flexible beam, and 4 sheets are attached in total.
3. The moving multi-flexural beam coupled vibration detecting apparatus according to claim 1, wherein the acceleration sensor is provided at a position 60mm away from the free end on a widthwise centerline of each of the flexural beam suspended ends.
4. The device for detecting coupling vibration of a moving multi-flexible beam according to claim 1, wherein the piezoelectric sheet driver comprises 16 piezoelectric ceramic sheets, eight piezoelectric ceramic sheets are pasted on each flexible beam, the distance between the eight piezoelectric ceramic sheets and the fixed position of the flexible beam is 25mm, the front and the back of each flexible beam are symmetrically pasted, each surface of each flexible beam is 4, and the piezoelectric ceramic sheets are symmetrical about the central line of the width direction of each flexible beam.
5. The mobile multi-flexible-beam coupled vibration detecting device of claim 1, wherein two flexible beams are connected through a spring, and each flexible beam is connected with a spring support through a spring.
6. The device for detecting the coupling vibration of the moving multi-flexible beam according to any one of claims 1 to 5, further comprising a travel switch, wherein the travel switch is positioned on the experiment table through a travel switch bracket.
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| CN202021702183.9U CN212569526U (en) | 2020-08-14 | 2020-08-14 | Many flexible roof beams of removal coupling vibration detection device of spring coupling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051795A (en) * | 2020-08-14 | 2020-12-08 | 华南理工大学 | Device and method for detecting coupling vibration of movable multi-flexible beam connected by spring |
| CN112595413A (en) * | 2021-03-03 | 2021-04-02 | 山东新港电子科技有限公司 | Detection tool for vibration sensor |
| CN114967778A (en) * | 2022-05-12 | 2022-08-30 | 华南理工大学 | Multi-flexible coupling beam vibration control device and method based on lead screw driving |
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2020
- 2020-08-14 CN CN202021702183.9U patent/CN212569526U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051795A (en) * | 2020-08-14 | 2020-12-08 | 华南理工大学 | Device and method for detecting coupling vibration of movable multi-flexible beam connected by spring |
| CN112051795B (en) * | 2020-08-14 | 2024-04-16 | 华南理工大学 | Spring-connected mobile multi-flexible-beam coupling vibration detection device and method |
| CN112595413A (en) * | 2021-03-03 | 2021-04-02 | 山东新港电子科技有限公司 | Detection tool for vibration sensor |
| CN112595413B (en) * | 2021-03-03 | 2021-10-08 | 山东新港电子科技有限公司 | Detection tool for vibration sensor |
| CN114967778A (en) * | 2022-05-12 | 2022-08-30 | 华南理工大学 | Multi-flexible coupling beam vibration control device and method based on lead screw driving |
| CN114967778B (en) * | 2022-05-12 | 2023-04-21 | 华南理工大学 | Multi-flexible coupling beam vibration control device and method based on screw drive |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |