CN109060298B - Intelligent wave-making water tank with active feedback wave-absorbing function - Google Patents
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- CN109060298B CN109060298B CN201811168528.4A CN201811168528A CN109060298B CN 109060298 B CN109060298 B CN 109060298B CN 201811168528 A CN201811168528 A CN 201811168528A CN 109060298 B CN109060298 B CN 109060298B
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- 238000012360 testing method Methods 0.000 claims description 28
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000008030 elimination Effects 0.000 claims description 4
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- 230000033001 locomotion Effects 0.000 description 8
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- 238000011160 research Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000013112 stability test Methods 0.000 description 1
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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
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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Abstract
The invention provides an intelligent wave-making water tank with an active feedback wave-absorbing function, which comprises a wave-making device and a wave-absorbing device, wherein the wave-making device comprises an active wave-making control system, a crank connecting rod mechanism and a wave-making rocking plate; the active wave-making control system is connected with a crank connecting rod structure through a wave-making servo motor, and the crank connecting rod structure is connected with a wave-making rocking plate; the wave-absorbing device comprises an active wave-absorbing control system, a screw rod mechanism and a wave-absorbing rocking plate; the active wave-absorbing control system is connected with a screw rod structure through a wave-absorbing servo motor, and the screw rod structure is connected with a wave-absorbing rocking plate; the active wave-making measuring instrument and the active wave-absorbing measuring instrument are arranged in the water tank and are respectively connected with the active wave-making control system and the active wave-absorbing control system; the invention has the advantages of small structure size, strong operability, high wave quality, good stability, easy control and the like, and has extremely high application value and popularization value.
Description
Technical Field
The invention relates to an intelligent wave-making water tank, in particular to an intelligent wave-making water tank with an active feedback wave-absorbing function.
Background
With the development of ocean science and the progress of national defense technology, impact resistance of a ship structure and fatigue strength of the structure in a wave environment are increasingly valued by ocean engineering research of various countries. And with the rapid development of socioeconomic performance, the development and research work of ocean resources has become a main strategic goal of multi-national development, so research on the law of ocean motion and the motion characteristics of ship structures under different sea areas, and research on offshore buildings and coastal infrastructures have become increasingly important.
The impact resistance test and the structural fatigue strength and stability test of the ship structure under the calm water surface are fully researched by students at home and abroad, but the working condition test under the wave environment of different sea areas is not fully researched, mainly because the wave forms in different sea areas are various and the simulated wave environment has higher requirements on the test site, and the realization of high-quality waves is difficult.
At present, the test methods in different wave environments at home and abroad are approximately divided into three types, the first method is to enlarge a test field, the test field is large, an active wave generating device generates ideal waves, energy is consumed in the motion transmission process due to the large size of the test field, a passive wave eliminating area is arranged at the edge of the test field, and reflection of waves is eliminated. The second method is a small wave-making water tank which is used for making waves unidirectionally, and a small passive breakwater is arranged on the other side of the wave-making water tank device. The third method is to actively compensate the wave making water tank, actively make waves at one side of the wave making water tank, set a wave height measuring instrument in front of the wave making device of the water tank, feed back the wave record reflected by the boundary to the active wave making system, actively compensate the wave size according to the wave information fed back by the system, and actively eliminate the reflected waves on the premise that the target waves are unchanged.
Disclosure of Invention
The invention aims to provide an intelligent wave-making water tank with an active feedback wave-absorbing function, which can be used for generating high-precision and high-quality waves and has the active feedback wave-absorbing function so as to meet different experimental research requirements.
The purpose of the invention is realized in the following way:
the intelligent wave-making water tank with the active feedback wave-absorbing function comprises a wave-making device and a wave-absorbing device, wherein the wave-making device and the wave-absorbing device are respectively positioned at two sides of the water tank, and the wave-making device comprises an active wave-making control system, a crank connecting rod mechanism and a wave-making rocking plate; the active wave-making control system is connected with a crank connecting rod mechanism through a wave-making servo motor, and the crank connecting rod mechanism is connected with a wave-making rocking plate; the wave-absorbing device comprises an active wave-absorbing control system, a screw rod mechanism and a wave-absorbing rocking plate; the active wave-absorbing control system is connected with a screw rod mechanism through a wave-absorbing servo motor, and the screw rod mechanism is connected with a wave-absorbing rocking plate; the active wave-making measuring instrument and the active wave-absorbing measuring instrument are arranged in the water tank and are respectively connected with the active wave-making control system and the active wave-absorbing control system; the two sides of the water tank are respectively provided with a wave-making area porous structure and a wave-absorbing area porous structure.
The invention also includes such features:
1. the wave-making area porous structure and the wave-absorbing area porous structure are formed by superposing thin plates with hexagonal honeycomb holes, and the heights of the thin plates are gradually reduced;
2. the crank connecting rod mechanism comprises a crank member and a hinged rocker connected with the crank member; the crank component is connected with the wave-making servo motor through a speed reducer, the hinged rocker is hinged with the upper edge of the wave-making rocking plate, the lower edge of the wave-making rocking plate is hinged with the wave-making rocking plate support, and the wave-making rocking plate support is fixed at the bottom of the water tank;
3. the screw mechanism comprises a screw slide rail and a slide block arranged in the screw slide rail; the screw rod sliding rail is connected with the wave-absorbing servo motor, the sliding block is hinged with the upper side of the wave-absorbing rocking plate through the connecting tripod, the lower side of the wave-absorbing rocking plate is hinged with the wave-absorbing rocking plate support, and the wave-absorbing rocking plate support is fixed at the bottom of the water tank;
4. the length of the water tank is equal to or greater than 4m, the width of the water tank is equal to or greater than 0.5m, the height of the water tank is equal to or greater than 0.7m, and the ratio of the distance between the active wave-making measuring instrument and the active wave-absorbing measuring instrument to the length of the water tank is equal to or less than 3:4.
the invention is provided with an active wave-making device and an active wave-absorbing device which are respectively positioned at two sides of a water tank, wherein the active wave-making device adopts a crank connecting rod mechanism driven by a servo motor to drive a rocking plate to make waves, and the active wave-absorbing device adopts a lead screw sliding rail driven by the servo motor to drive the rocking plate to make waves; the active wave-making device is characterized in that the active wave-making controller controls the motor to rotate at different speeds to obtain different wave frequencies, and waves with different amplitudes can be obtained by changing the length of a crank of the active wave-making device; the active wave-absorbing device is characterized in that the active wave-absorbing controller controls the rotation speed and amplitude of a motor of the active wave-absorbing device, the screw rod sliding rail is strong in operability of controlling swing of the swing plate, the movement mode is changeable, and the active wave-absorbing device can be adjusted according to real-time waves to realize an active wave-absorbing function; the wave data obtained by the active wave-making measuring instrument and the active wave-absorbing measuring instrument are fed back to the active wave-making control system, and the crank rotation rate is adjusted in real time to obtain ideal high-quality waves. The wave data obtained by the active wave-absorbing measuring instrument is fed back to the active wave-absorbing control system, the amplitude and the speed of the motion of the sliding block of the screw rod sliding rail are adjusted in real time, and effective wave absorption is carried out in a wave-absorbing area; the measuring instrument is directly connected with a computer, the computer is connected with a controller, the controller is connected with a frequency converter, the frequency converter controls a servo motor, the servo motor controls a rocking plate and acts on an encoder, and the encoder is connected with the frequency converter to control the servo motor again; the polygonal porous structure adopts a hexagonal aluminum honeycomb formed by stacking thin plates and adopts a sloping bank structure; the invention divides the test water tank into four areas, namely an active wave-making area, a test area, a wave-absorbing area and an active wave-absorbing area, wherein the test area has the best wave quality on the water surface and is a core test area of the invention.
Compared with the prior art, the invention has the beneficial effects that:
the intelligent water tank wave-making device is a crank rocker mechanism driven by a servo motor, is stable in operation and simple and convenient in power adjustment, can meet different wave sizes by changing crank members, obtains different wave frequencies by changing motor operation rates, and is simple in structure and a driving control system.
The water tank adopted by the invention has reasonable size, meets the requirements of medium and small-sized tests, is designed to be 4m long, 0.5m wide and 0.7m high at the minimum, the length ratio of a test area to the water tank is 3:4 at the maximum, the whole structure has small size, and the wave size and the frequency are easier to adjust and realize.
The invention has the advantages that the active wave-making measuring instrument and the active wave-eliminating measuring instrument are adopted, the purpose of timely adjusting the target wave quality is achieved by adopting the double measuring instruments, and the target wave quality can be fed back to the active wave-eliminating control system in real time, so that matched waves are actively generated, and waves are eliminated.
The active wave-absorbing device adopts the wave-absorbing servo motor and the screw rod slide rail to control the sliding block to drive the wave-absorbing rocking plate to swing back and forth so as to actively generate waves and offset the waves generated by active wave-making waves, and adopts the screw rod slide rail to control the rocking plate to swing so as to be easier to finely adjust, the amplitude and the frequency of the rocking plate can be adjusted according to feedback information, and the rocking mode is rich and various and is easier to realize.
The invention has the advantages of small structure size, strong operability, high wave quality, good stability, easy control and the like, and has extremely high application value and popularization value.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2a is a left side view of the structure of the present invention;
FIG. 2b is a right side view of the structure of the present invention
FIG. 3 is a schematic diagram of an active wave device according to the present invention;
FIG. 4 is a schematic diagram of an active wave-absorbing device according to the present invention;
FIG. 5a is a schematic view of a wave-absorbing porous structure of the present invention;
FIG. 5b is a schematic view of a wave-absorbing porous structure of the present invention;
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The intelligent wave-making water tank with the active feedback wave-absorbing function is characterized by comprising an active wave-making area a, a test area b, a wave-absorbing area c and an active wave-absorbing area d.
The active wave-making area a mainly comprises a wave-making control box 8, a wave-making servo motor 14, a speed reducer 5, a crank component 2, a hinged rocker 3, a wave-making rocking plate 6, a wave-making rocking plate support 11 and a wave-making area porous structure 21. The active wave-making system comprises a wave-making control box 8, a measuring system computer, a controller, a frequency converter, an encoder, a direct current stabilized voltage supply and a fan, wherein the measuring system computer, the controller, the frequency converter, the encoder, the direct current stabilized voltage supply and the fan are arranged in the wave-making control box 8, the wave-making servo motor 14 is controlled by setting the initial target wave size and frequency, and the crank-link mechanism drives the wave-making rocking plate 6 to generate target waves in the water tank 22. The control system comprises a feedback function, namely, the wave data in the measurement target area is fed back with the initial setting error, and the power of the motor is automatically adjusted to obtain ideal wave quality;
the test area b is an area with the best water wave quality and is used for carrying out a ship structure with waves, an underwater explosion test and the like. The two ends of the test area are provided with an active wave-making measuring instrument 16 and an active wave-eliminating measuring instrument 25, the wave quality measured by the active wave-making measuring instrument 16 is fed back to an active wave-making control system, and the active wave-making control system automatically adjusts the rotation speed of the wave-making servo motor 14 to adjust the target wave quality. The active wave-absorbing measuring instrument 25 measures wave data at the position and feeds the wave data back to the active wave-absorbing control system, the active wave-absorbing control system adjusts the wave-absorbing servo motor 13 to control the stroke and speed of the screw rod slide rail 19, and matched wave-absorbing waves are actively generated to counteract wave-producing waves, so that the purpose of absorbing waves is achieved;
the wave-absorbing region c is a mutual cancellation region between waves generated by the active wave-generating region and waves generated by the active wave-absorbing region;
the active wave-absorbing region d mainly comprises a wave-absorbing control box 10, a wave-absorbing servo motor 13, a sliding block 20, a wave-absorbing rocking plate 28, a screw rod sliding rail 19, a wave-absorbing rocking plate support 4 and a wave-absorbing region porous structure. The wave-canceling control box 10 includes a measuring system computer, a single-chip microcomputer, a motion controller, a driver, a dc stabilized voltage supply, a fan, etc., and the active wave-canceling control box, the measuring system computer, the single-chip microcomputer, the motion controller, the driver, the dc stabilized voltage supply, the fan, etc. form an active wave-canceling system, the controller receives wave data measured by the active wave-canceling measuring instrument 25, and gives an instruction to the wave-canceling servo motor 13 according to the wave data, so that the slider 20 drives the wave-canceling rocker 28 to oscillate under the positive and negative operation of the motor, and the wave is eliminated in real time.
The wave-making area porous structure 21 and the wave-absorbing area porous structure 9 are thin plates with hexagonal porous structures, the heights of the thin plates are sequentially reduced, and the advantages of light weight, good wave-absorbing effect and the like are achieved.
Fig. 1 is a schematic diagram of the overall structure of the present invention. The whole structure is respectively provided with four areas, namely an active wave-making area, a test area, a wave-absorbing area and an active wave-absorbing area, wherein the active wave-making area is an active wave-making device, and fig. 3 is a schematic diagram of the active wave-making device of the invention. The test area is the area with the best wave quality of the water tank, can carry out corresponding wave test, and is provided with an active wave making measuring instrument 16 and an active wave absorbing measuring instrument 25 which respectively measure the wave quality at corresponding positions and feed the wave quality back to a corresponding control system in real time for adjusting the wave quality and the wave absorbing wave. The wave-absorbing region is a region where waves generated by the active wave-generating device and waves generated by the active wave-absorbing device cancel each other. The active wave-absorbing region is an active wave-absorbing device, as shown in fig. 4, which is a schematic diagram of the active wave-absorbing device of the present invention.
Fig. 2a and fig. 2b are left and right views of the structure of the present invention, fig. 3 is a schematic diagram of an active wave-generating device of the present invention, and fig. 4 is a schematic diagram of an active wave-absorbing device of the present invention. Wherein the left view comprises a crank member 2, a hinged rocker 3, a speed reducer 5, a wave-making servo motor 14, a wave-making start switch 18, a wave-making closing switch 24, a water tank 22, an intelligent display operation screen 23, and a computer, a controller, a frequency converter, an encoder and a wave-making area porous structure 21 inside the wave-making control box 8. The starting state is that the wave-making starting switch 18 is opened, the size and the frequency of target waves are set through the intelligent display operation screen 23, the computer gives a command to the controller, the wave-making servo motor 14 drives the speed reducer 5 to operate, the speed reducer 5 is fixedly connected with the crank member 2 through keys, the crank member 2, the hinged rocker 3 and the wave-making rocking plate 6 form a crank rocker structure, and the wave-making rocking plate 6 is hinged with the wave-making rocking plate support 11, so that the wave-making rocking plate 6 swings back and forth to generate target waves.
The right view comprises a wave-absorbing control box 10, an internal computer, a controller, a frequency converter, an encoder, a water tank 22, an intelligent display operation screen 29, a wave-absorbing start switch 26, a wave-absorbing close switch 27, a wave-absorbing servo motor 13, a screw slide rail 19, a slide block 20, a connecting triangular piece 17, a wave-absorbing rocking plate support 4 and a wave-absorbing region porous structure 9. The wave data measured by the active wave-absorbing measuring instrument 25 is transmitted to the computer, and the computer matches corresponding wave generation commands according to the obtained wave data, so that the wave-absorbing servo motor 13 operates according to the designated motion amplitude and frequency, and the sliding block 20 is driven to enable the wave-absorbing rocking plate 28 to generate corresponding waves in the water tank 22, and the waves generated by the active wave-generating device are mutually offset in the wave-absorbing area.
Fig. 5 is a schematic view of the wave-absorbing porous structure of the present invention. The wave-absorbing porous structure is formed by overlapping thin-wall honeycomb sheets and is used for eliminating waves generated by two opposite sides.
To sum up: the invention relates to an intelligent wave-making water tank with an active feedback wave-absorbing function, which comprises an active wave-making area, a test area, a wave-absorbing area and four areas of the active wave-absorbing area. Wherein the active wave-making area is controlled by an active wave-making control system to drive a servo motor to drive a crank rocker mechanism so as to drive a wave-making rocking plate to regularly rock to generate artificial waves; the test area is provided with an active wave-making measuring instrument and an active wave-dissipating measuring instrument, the wave quality measured by the measuring instrument is fed back to the active wave-making control system, the active wave-making control system automatically adjusts the rotation speed of the wave-making servo motor to adjust the target wave quality, the active wave-dissipating measuring instrument measures the wave data at the position and feeds back to the active wave-dissipating control system, the active wave-dissipating control system adjusts the stroke and the speed of the screw rod sliding rail controlled by the wave-dissipating servo motor, and matched wave-dissipating waves are actively generated to counteract the wave-making waves, so that the wave-dissipating purpose is achieved. The area with the best water wave quality in the test area is used for carrying out corresponding wave tests; the wave-absorbing area is a wave-canceling area on two sides; the active wave-absorbing area is controlled by an active wave-absorbing control system to absorb wave, and the wave-absorbing rocking plate is controlled by the sliding block to absorb wave. The intelligent water tank is provided with an active wave generation device and an active wave elimination device, the water wave measurement system carries out positive and negative feedback, the positive feedback enables the water wave quality of a test area to be optimal, and the negative feedback enables the water wave positive and negative offset of the wave elimination area to achieve the function of active wave elimination. The water tank can actively generate wave-absorbing waves while wave with compound test precision requirements is generated, the structure is ingenious in conception, small in size, high in precision, strong in wave-generating capacity, good in wave quality and extremely high in practicability and application value.
Claims (9)
1. The intelligent wave-making water tank with the active feedback wave-absorbing function is characterized by comprising a wave-making device and a wave-absorbing device, wherein the wave-making device and the wave-absorbing device are respectively positioned at two sides of the water tank, and the wave-making device comprises an active wave-making control system, a crank connecting rod mechanism and a wave-making rocking plate; the active wave-making control system is connected with a crank connecting rod structure through a wave-making servo motor, the crank connecting rod structure is connected with a wave-making rocking plate, the lower edge of the wave-making rocking plate is hinged with a wave-making rocking plate support, and the wave-making rocking plate support is fixed at the bottom of the water tank; the wave-absorbing device comprises an active wave-absorbing control system, a screw rod mechanism and a wave-absorbing rocking plate; the active wave-absorbing control system is connected with a lead screw structure through a wave-absorbing servo motor, the lead screw structure is connected with a wave-absorbing rocking plate, the lower edge of the wave-absorbing rocking plate is hinged with a wave-absorbing rocking plate support, and the wave-absorbing rocking plate support is fixed at the bottom of the water tank;
the intelligent wave-making water tank comprises an active wave-making area a, a test area b, a wave-absorbing area c and an active wave-absorbing area d, wherein an active wave-making measuring instrument and an active wave-absorbing measuring instrument are arranged at two ends of the test area b, and are respectively connected with an active wave-making control system and an active wave-absorbing control system;
the two sides of the water tank are respectively provided with a wave-making area porous structure and a wave-absorbing area porous structure.
2. The intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 1, wherein the wave-making area porous structure and the wave-absorbing area porous structure are formed by superposing thin plates with hexagonal honeycomb holes, and the heights of the thin plates are gradually reduced.
3. The intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 1 or 2, wherein the crank-link mechanism comprises a crank member and an articulated rocker connected with the crank member; the crank component is connected with the wave-making servo motor through a speed reducer, and the hinged rocker is hinged with the upper edge of the wave-making rocking plate.
4. The intelligent wave making water tank with the active feedback wave-absorbing function according to claim 1 or 2, wherein the screw mechanism comprises a screw slide rail and a slide block arranged in the screw slide rail; the lead screw sliding rail is connected with the wave-absorbing servo motor, and the sliding block is hinged with the upper edge of the wave-absorbing rocking plate through the connecting tripod.
5. The intelligent wave making water tank with the active feedback wave elimination function according to claim 3, wherein the screw mechanism comprises a screw sliding rail and a sliding block arranged in the screw sliding rail; the lead screw sliding rail is connected with the wave-absorbing servo motor, and the sliding block is hinged with the upper edge of the wave-absorbing rocking plate through the connecting tripod.
6. The intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 1 or 2, wherein the length of the water tank is equal to or more than 4m, the width of the water tank is equal to or more than 0.5m, the height of the water tank is equal to or more than 0.7m, and the ratio of the distance between the active wave-making measuring instrument and the active wave-absorbing measuring instrument to the length of the water tank is equal to or less than 3:4.
7. the intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 3, wherein the length of the water tank is equal to or more than 4m, the width of the water tank is equal to or more than 0.5m, the height of the water tank is equal to or more than 0.7m, and the ratio of the distance between the active wave-making measuring instrument and the active wave-absorbing measuring instrument to the length of the water tank is less than or equal to 3:4.
8. the intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 4, wherein the length of the water tank is equal to or more than 4m, the width of the water tank is equal to or more than 0.5m, the height of the water tank is equal to or more than 0.7m, and the ratio of the distance between the active wave-making measuring instrument and the active wave-absorbing measuring instrument to the length of the water tank is less than or equal to 3:4.
9. the intelligent wave-making water tank with the active feedback wave-absorbing function according to claim 5, wherein the length of the water tank is equal to or more than 4m, the width of the water tank is equal to or more than 0.5m, the height of the water tank is equal to or more than 0.7m, and the ratio of the distance between the active wave-making measuring instrument and the active wave-absorbing measuring instrument to the length of the water tank is less than or equal to 3:4.
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| CN112395831A (en) * | 2020-09-21 | 2021-02-23 | 中船第九设计研究院工程有限公司 | Long-edge lifting wave-absorbing device design element coding scheme |
| CN114608800B (en) * | 2022-04-14 | 2023-04-07 | 中国科学院力学研究所 | Multi-degree-of-freedom dynamic water inlet device under wave condition |
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