Wave-making experiment collection method and system based on large-scale wave flume

Abstract

A wave-making experiment collection method based on a large-scale wave flume, which method relates to the field of wave simulation devices. The method comprises the following steps: determining wave-making parameters of a wave-making experiment based on a large-scale wave flume (S1); inputting the wave-making parameters into a wave-making system (S2); collecting wave data, which is generated by the wave-making system (S3); comparing the wave data with expected wave data (S4), wherein an experiment result can be determined simply by means of a relatively simple data collection process; and if the difference between the wave data and the expected wave data is greater than a preset threshold value (S4), collecting an electric motor encoder feedback signal and a wave-making plate position signal (S5). By means of the method, the cause of an error can be effectively located, thereby improving the efficiency of a wave-making experiment. Also provided is a wave-making experiment collection system based on a large-scale wave flume.

Description

Wave making test collection method and system based on large-scale wave flume TECHNICAL FIELD

[0001] The present application relates to the field of wave simulation equipment, especially to a wave making test collection method and system based on large-scale wave flume. BACKGROUND

[0002] With the increasing demand for coastal deepwater port construction, port engineering is facing unprecedented challenges. The quality of the nearshore coastline resources in China is becoming increasingly scarce, forcing port construction to develop offshore or even use island regions, which has become an inevitable trend in the future. However, the construction environment of these offshore deepwater ports is complex and variable, especially the uncertainty of water depth, large waves, strong currents and foundation conditions, which brings great challenges to the safety and stability of the port. Among them, the impact of typhoon waves on deepwater breakwaters and wharf structures has become a key problem that needs to be solved urgently.

[0003] In order to effectively respond to these challenges, it is particularly important to deeply study the interaction mechanism between large waves, structures and foundations. Due to the significant differences in the motion or deformation laws of the three and the extremely complex coupling between them, the traditional small-scale model research method is difficult to fully reveal the inherent law. Therefore, establishing a large-scale wave flume and conducting simulation research in the laboratory has become an effective solution.

[0004] In the laboratory environment, the wave flume and wave maker are the core equipment for simulating sea waves. The wave maker can generate various regular or irregular waves in the experimental flume according to the preset wave making parameters, thereby simulating the real marine environment. This simulation test is of great significance for the design and optimization of ships, port engineering and wave energy development devices, and is an indispensable research means in the field of port engineering and wave energy development.

[0005] However, although the existing technology has made significant progress in establishing large flumes and wave making equipment, there are still deficiencies in the data collection of wave making tests. The traditional data collection method often ignores real-time feedback and fine adjustment during the wave making process, resulting in the need to frequently adjust the wave making parameters, which seriously affects the efficiency and accuracy of the wave making test. Therefore, developing an efficient and accurate wave making test data collection method and system is of great significance to improve the overall level of laboratory wave simulation research. SUMMARY

[0006] In order to solve the above technical problems, the present application proposes a wave making test collection method and system based on large-scale wave flume to optimize the data collection process and improve the data processing accuracy, so as to realize the efficiency of wave making test and provide more reliable technical support for the research in the field of port engineering and wave energy development.

[0007] The application provides a wave making test collection method based on a large-scale wave tank, and specifically comprises the following steps:

[0008] determining wave making parameters of the wave making test of the large-scale wave tank;

[0009] inputting the wave making parameters into a wave making system, and driving a wave making machine to realize wave making, wherein the wave making system comprises an upper computer and the wave making machine, the wave making machine comprises an electrical transmission system and a wave making board, and the electrical transmission system comprises a power brake box, a busbar, a control cabinet, a servo driver, a servo motor, an encoder, an encoder wire and a motor wire;

[0010] collecting wave data generated by the wave making system;

[0011] comparing the wave data with expected wave data, and if the difference between the wave data and the expected wave data is greater than a preset threshold, the next step is entered;

[0012] collecting motor encoder feedback signals and wave making board position signals.

[0013] Preferably, the wave making parameters comprise a wave making type, a wave making wave height and a wave making period.

[0014] Preferably, the wave making type is regular wave and irregular wave, the wave making wave height is the maximum height of the wave, and the wave making period is the time required for two adjacent wave crests to pass through the same point.

[0015] Preferably, inputting the wave making parameters into the wave making system and driving the wave making machine to realize wave making specifically comprises the following steps: during the wave making test, the wave making system calculates the wave signal in front of the wave making board of the target wave according to the input wave making parameters, converts the wave signal in front of the wave making board of the target wave into data of the movement speed and position of the wave making board, inputs the data into a D / A converter, the D / A converter converts the digital signal into an analog voltage signal required by the servo driver, the servo driver outputs a pulse signal to control the rotation speed and angle of the servo motor, a track drive linear motion unit drives a wave pushing board to move in water, and thus wave making is realized.

[0016] Preferably, the servo motor is a stator-cooled asynchronous servo motor with an IP55 or above protection level.

[0017] Preferably, collecting the wave data generated by the wave making system specifically comprises the following steps: collecting the wave height of the wave generated by the wave making system through a wave height measuring system, collecting the wave making period through a wave measuring system, and collecting the wave pressure through a pressure collecting system.

[0018] Preferably, the wave height measuring system is a dynamic capacitance type wave height measuring system with a measuring range of 2m, the wave measuring system is a resistance type wave measuring system, and the pressure collecting system is a 2008 type micro point pressure collecting system.

[0019] Preferably, the wave data is compared with expected wave data, and if there is a difference between the wave data and the expected wave data greater than a preset threshold, the next step is entered, that is, if any of the maximum wave height, wave period and maximum wave pressure of the wave data is different from the maximum wave height, wave period and maximum wave pressure of the expected wave data by more than 5%, the next step is entered.

[0020] Preferably, the servo driver directly collects the feedback signal of the motor encoder, and a sampling card is arranged to collect the motion position signal of the wave board in real time.

[0021] According to another aspect of the present application, the present application also provides a wave making test collecting system based on a large-scale wave flume, which adopts the wave making test collecting method based on a large-scale wave flume, and the collecting system comprises:

[0022] a wave making parameter determining module for determining the wave making parameters of the wave making test of the large-scale wave flume;

[0023] a wave making system for inputting the wave making parameters into the wave making system, and driving the electrical transmission system of the wave making machine to realize wave making; the wave making system comprises an upper computer and a wave making machine, and the wave making machine comprises an electrical transmission system and a wave board; the electrical transmission system comprises a power brake box, a busbar, a control cabinet, a servo driver, a servo motor, an encoder and an encoder wire;

[0024] a wave data collecting module for collecting the wave data generated by the wave making system;

[0025] a data comparing module for comparing the wave data with expected wave data, and if there is a difference between the wave data and the expected wave data greater than a preset threshold, entering the electrical transmission system data collecting module;

[0026] an electrical transmission system data collecting module for collecting the feedback signal of the motor encoder and the wave board position signal.

[0027] The embodiment of the present application has the following technical effects: after the wave is generated, the wave data is collected first, and then compared with the expected wave making parameters; since the wave data collection is relatively convenient, the test effect can be determined through a relatively simple data collection process, so that the data collection process of the wave making test can be simplified; after the error exists between the wave data and the expected data, the signal of the electrical transmission system of the wave making machine is collected, the error cause can be effectively located, and the efficiency of the wave making test is improved. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 is a flowchart of a wave generation test acquisition method based on a large-scale wave flume provided in an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the electrical drive system provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] Example 1: Figure 1 is a flowchart of a wave generation test acquisition method based on a large-scale wave tank provided by an embodiment of the present invention. Referring to Figure 1, the method specifically includes:

[0033] Determine the wave generation parameters for large-scale wave flume wave generation experiments;

[0034] The large-scale wave tank has dimensions of 456m × 5.0m × 12m.

[0035] Specifically, the wave generation parameters include wave generation type, wave generation height, and wave generation period;

[0036] The wave type is divided into two types: regular wave and irregular wave. The wave height is the maximum height of the wave. The wave period is the time required for two adjacent wave crests (or troughs) to pass through the same point.

[0037] In this embodiment, the wave generation parameters of the large-scale wave tank are determined based on the expected wave data required for the experiment. For example, in this simulated seawater scouring experiment, the wave type is a regular wave with a wave height of 3.5m and a wave period of 6s.

[0038] The wave-generating parameters are input into the wave-generating system, which drives the wave generator to generate waves.

[0039] The wave making system comprises an upper computer and a wave maker, and the wave maker comprises an electrical transmission system and a wave making plate, as shown in Figure 2, and the electrical transmission system comprises a power brake box, a busbar, a control cabinet, a servo driver, a servo motor, an encoder, an encoder line, a motor line and the like;

[0040] When the wave making test is performed, the wave making system is usually required to input the wave making type, the wave making wave height, the wave making period and the like, which are related to the wave making, the wave making system drives the electrical transmission system of the wave maker to drive the wave making plate to generate the wave which meets the test requirements.

[0041] Specifically, the wave making parameters are input to the wave making system, and the wave making system drives the wave maker to make waves, which is specifically as follows: during the wave making test, the wave making system calculates the wave signal in front of the plate of the target wave according to the input wave making parameters, and converts the wave signal in front of the plate of the target wave into the data of the movement speed and position of the wave making plate, and inputs the data into a D / A converter, the D / A converter converts the digital signal into an analog voltage signal required by a servo driver, the servo driver outputs a pulse signal to control the rotation speed and angle of a servo motor, a track drive linear motion unit drives a wave pushing plate to move in water, so as to realize wave making.

[0042] The servo motor adopts a stator-cooled asynchronous servo motor with an IP55 or above protection level, and is equipped with a separately driven fan, so that sufficient ventilation can be ensured even at zero rotation speed, the servo motor has a high overload capacity, a good acceleration capacity, and a durable, permanently lubricated bearing to adapt to the cantilever force and high-speed working conditions of the gear transmission.

[0043] The wave data generated by the wave making system is collected;

[0044] In this step, the wave height of the wave generated by the wave making system is collected by a wave height measuring system, the wave making period is collected by a wave measuring system, and the wave pressure is collected by a pressure collecting system.

[0045] The wave height measuring system is a dynamic capacitance type wave height measuring system with a range of 2m, the wave measuring system is a resistance type wave measuring system, and the pressure collecting system is a 2008 type micro point pressure collecting system.

[0046] The 2008 type micro point pressure collecting system can automatically collect the wave pressure and has a related processing function to process the collected pressure.

[0047] The wave data is compared with the expected wave data, and if the difference between the wave data and the expected wave data is greater than a preset threshold, the next step is entered.

[0048] If the wave data and the expected wave data differ by more than a preset threshold, the next step is: if any of the three wave data, i.e., the maximum wave height, the wave period, and the maximum wave pressure, of the wave data differs from the maximum wave height, the wave period, and the maximum wave pressure of the expected wave data by more than 5%, the next step is entered.

[0049] The motor encoder feedback signal and the wave board position signal are collected.

[0050] In this step, the servo driver directly collects the feedback signal of the motor encoder, so that a closed-loop control can be formed in the wave machine electrical transmission system, thereby improving the control accuracy and the stability of the wave system movement speed, and avoiding the motor step loss phenomenon.

[0051] At the same time, the sampling card is arranged to collect the movement position signal of the wave board in real time, so that a position closed-loop control can be formed in the wave machine external system to improve the positioning accuracy of the wave board.

[0052] After the wave is generated, the wave data is collected first, and then compared with the expected wave parameters. Since the wave data collection is relatively easy, the test effect can be determined through a relatively simple data collection process, so the data collection process of the wave test can be simplified. After the wave data and the expected data have errors, the signals of the wave machine electrical transmission system are collected to effectively locate the error causes.

[0053] In embodiment two, a wave test collection system based on a large-scale wave flume is provided. The system adopts the wave test collection method based on a large-scale wave flume in embodiment one. The collection system comprises:

[0054] A wave parameter determination module is configured to determine the wave parameters of the wave test of the large-scale wave flume.

[0055] A wave system is configured to input the wave parameters into the wave system. The wave system drives the wave machine electrical transmission system to realize wave generation. The wave system comprises an upper computer and a wave machine. The wave machine comprises an electrical transmission system and a wave board. The electrical transmission system comprises a power brake box, a busbar, a control cabinet, a servo driver, a servo motor, an encoder, an encoder wire, and a motor wire.

[0056] A wave data collection module is configured to collect the wave data generated by the wave system.

[0057] The data comparison module is configured to compare the wave data with expected wave data, and if a difference between the wave data and the expected wave data is greater than a preset threshold, the data acquisition module of the electric drive system is entered.

[0058] In embodiment three, a computer readable storage medium is provided, and a data processing program is stored on the computer readable storage medium. The data processing program is executed by a processor to implement the wave making test data acquisition method based on a large-scale wave flume according to embodiment one.

[0059] Those skilled in the art will appreciate that embodiments herein can be provided as methods, apparatuses (devices), or computer program products. Accordingly, embodiments herein can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Embodiments of software can be implemented by one or more computer programs executing on one or more computers or other programmable devices, e.g., a processor. Embodiments of software can be implemented in a high-level procedural or object-oriented programming language, or in assembly or machine language. Program code can be converted to a variety of different machine languages using routines known to those of skill in the art. Program code can be stored in any type of non-transitory computer-readable storage media or memory, including without limitation RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Further, those of skill in the art will appreciate that communications media typically embody computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and include any information delivery media.

[0060] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks.

[0061] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the functions specified in the flowchart and / or block diagram block or blocks.

[0062] It should be noted that the terms used in the present application are only intended to describe specific embodiments and are not intended to limit the scope of the present application. As shown in the specification of the present application, unless the context clearly indicates otherwise, "one", "a", "an", and / or "the" do not specifically refer to the singular, but can also include the plural. The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method or device including the element.

[0063] It should also be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] Unless otherwise specified and limited, the terms "mount", "connect", "connect" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application.

Claims

1. A wave making test acquisition method based on a large scale wave flume, characterized by, The method comprises the following steps: determining wave generation parameters of a large-scale wave flume wave generation test; inputting the wave generation parameters into a wave generation system, the wave generation system driving a wave generator to generate waves; wherein the wave generation system comprises a host computer and the wave generator, the wave generator comprising an electrical transmission system and a wave board, the electrical transmission system comprising: a power brake chamber, a busbar, a control cabinet, a servo driver, a servo motor, an encoder, an encoder wire, and a motor wire; collecting wave data generated by the wave generation system; comparing the wave data with expected wave data, and if the difference between the wave data and the expected wave data is greater than a preset threshold, proceeding to the next step; collecting motor encoder feedback signals and wave board position signals.

2. The wave test collection method based on a large-scale wave flume according to claim 1, characterized in that, The wave generation parameters comprise a wave generation type, a wave generation height, and a wave generation period.

3. The wave test collection method based on a large-scale wave flume according to claim 2, characterized in that, The wave generation type is regular waves and irregular waves, the wave generation height is the maximum height of the waves, and the wave generation period is the time required for two adjacent wave crests to pass the same point.

4. The wave test collection method based on a large-scale wave flume according to claim 1, characterized in that, Inputting the wave generation parameters into the wave generation system, the wave generation system driving the wave generator to generate waves specifically comprises: during the wave generation test, the wave generation system calculates the wave signal in front of the wave board of the target waves according to the input wave generation parameters, converts the wave signal in front of the wave board of the target waves into data of the wave board movement speed and position, inputs the data into a D / A converter, the D / A converter converts the digital signal into an analog voltage signal required by the servo driver, the servo driver outputs a pulse signal to control the rotation speed and angle of the servo motor, the track drive linear motion unit drives the wave board to move in the water, thereby generating waves.

5. The wave test collection method based on a large-scale wave flume according to claim 4, characterized in that, The servo motor is a stator-cooled asynchronous servo motor with an IP55 or above protection level.

6. The wave test collection method based on a large-scale wave flume according to claim 1, characterized in that, Collecting the wave data generated by the wave generation system specifically comprises: collecting the wave height of the waves generated by the wave generation system through a wave height measurement system, collecting the wave generation period through a wave measurement system, and collecting the wave pressure through a pressure collection system.

7. The wave test collection method based on a large-scale wave flume according to claim 6, characterized in that, The wave height measurement system is a 2m range dynamic capacitive wave height measurement system, the wave measurement system is a resistance type wave measurement system, and the pressure collection system is a 2008 type micro point pressure collection system.

8. The wave test collection method based on a large-scale wave flume according to claim 1, characterized in that, Comparing the wave data with the expected wave data, if the difference between the wave data and the expected wave data is greater than a preset threshold, proceeding to the next step specifically comprises: if any one of the maximum wave height, the wave generation period, and the maximum wave pressure of the wave data is more than 5% different from the maximum wave height, the wave generation period, and the maximum wave pressure of the expected wave data, proceeding to the next step.

9. The wave test collection method based on a large-scale wave flume according to claim 1, characterized in that, Collecting the motor encoder feedback signals and the wave board position signals specifically comprises: The servo driver directly collects the feedback signals of the motor encoder, and a sampling card is arranged to collect the movement position signals of the wave board in real time.

10. A wave making test acquisition system based on a large scale wave flume, characterized by, The wave generation test collection system adopts the wave generation test collection method based on a large-scale wave flume according to any one of claims 1-9, and the collection system comprises: a wave generation parameter determination module configured to determine wave generation parameters of a large-scale wave flume wave generation test; A wave making system, a wave making parameter input into the wave making system, the wave making system drives a wave making machine electric drive system to realize wave making; the wave making system comprises a host computer and a wave making machine, the wave making machine comprises an electric drive system and a wave making plate, the electric drive system comprises: a power brake box, a busbar, a control cabinet, a servo driver, a servo motor, an encoder, an encoder line and a motor line; A wave data acquisition module is used for collecting wave data generated by the wave making system; A data comparison module is used for comparing the wave data with expected wave data, and if the difference between the wave data and the expected wave data is greater than a preset threshold, entering an electric drive system data acquisition module; An electric drive system data acquisition module is used for collecting motor encoder feedback signals and wave making plate position signals.

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