A control method for sea condition simulation test platform

Abstract

The present invention provides a control method for a sea condition simulation test platform, comprising: a control unit forms a double closed-loop control of a driving device through a current detection unit, a position signal detection unit and a motor drive unit, the motor drive unit drives the start and stop of the driving device; and a driving motor drives a lifting device to drive the platform body to pitch and swing, and a driving motor electric push rod drives the platform body to swing left and right, highly simulating real sea conditions. This method is a double closed-loop control, which is reliable and safe.

Description

Technical Field

[0001] The invention relates to the field of sea condition simulation and ship electronic equipment testing, and in particular to a sea condition simulation test platform control method. Background Art

[0002] The noise caused by the vibration of the ship destroys the concealment of the ship; the vibration can cause cracks or fatigue damage to the hull structure, shortening the life of the ship; affecting the performance of the ship's instruments and control systems, creating hidden dangers to navigation; and affecting the work efficiency and living comfort of the crew on board.

[0003] The vibration of various machines (various internal combustion engines, pumps, fans, etc.) in the ship is transmitted to the hull through the machine base, causing the vibration of the ship shell, thereby generating underwater acoustic radiation. In order to effectively suppress the transmission of mechanical vibration inside the hull, various active and passive vibration control technologies have been widely studied and applied. Vibration reduction control devices (active and passive vibration isolators, vibration absorbers, etc.) are generally installed on the vibration transmission path from the excitation source to the hull (the machine base between the hull and the vibration source), reducing or eliminating the impact of the vibrating machinery on the hull from the vibration transmission path.

[0004] In actual ship navigation, the swaying motion of the hull caused by waves, especially the roll, causes the ship to tilt and have a certain swing acceleration. In this state, the propagation path of the excitation force generated by the excitation device to the hull will change, affecting the vibration control effect and even making the control ineffective. Therefore, a ship motion simulation platform is needed to provide a simulation environment for the early testing of existing vibration reduction control technology.

[0005] With the development of new ship electronic equipment, especially navigation, communication, radar, power control and other equipment, it is necessary to adapt to the various postures, impacts and vibrations of ships in wind and waves to ensure the reliability of the equipment. In order to conduct reliability assessment on the new electronic equipment, it is necessary to conduct similar tests on land to simulate the state of electronic equipment under ocean wind and waves, and realize reliability verification tests of various wind and wave levels through automated programs and control methods. Summary of the invention

[0006] The purpose of the present invention is to provide a control method for a sea condition simulation test platform to solve the technical problems existing in the prior art.

[0007] The present invention provides a control method for a sea condition simulation test platform, the sea condition simulation test platform comprises: a platform, a supporting device, an electric push rod, a lifting device and a driving device, the platform is a metal truss structure, used for simulating a deck; the bottom end of the supporting device is fixed to the ground, and the top end is connected to the platform, used for supporting the platform and the lifting device; one end of the lifting device is connected to the supporting device, and the other end is connected to the platform, one end of the electric push rod is fixedly installed, and the other end is connected to the platform; the electric push rod drives the platform to swing left and right; the control system of the control method comprises: a control unit, a current detection unit, a position signal detection unit, a motor drive unit, a drive motor, a brake unit, a limit switch and a human-machine interface;

[0008] The control unit forms a double closed-loop control of the drive device through the current detection unit, the position signal detection unit and the motor drive unit, and the motor drive unit drives the start and stop of the drive device;

[0009] During the startup process, the sea condition simulation test platform is in the initial position when the platform is horizontal;

[0010] The control unit is operated through a human-machine interface to realize double closed-loop control of the drive motor and achieve zero-speed holding, that is, the output torque is equal to the load torque;

[0011] The brake unit is turned on and a certain preset stroke value is lifted, the electric push rod and the lifting device are retracted, and the limit switch is touched to open. After the control unit receives the opening signal of the limit switch, the cyclic operation process is started;

[0012] During the cyclic operation, the lifting device and the electric push rod move according to the programmed amplitude, time and number of cycles under the control of the double closed loop;

[0013] After the cycle is completed, the platform moves to a horizontal position;

[0014] The electric push rod and lifting device are pushed out and the limit switch is touched to close;

[0015] The lifting device drives the platform to pitch and swing;

[0016] The electric push rod drives the platform to swing left and right;

[0017] The lifting device drives the platform to make pitch changes around the top of the supporting device; the driving device provides power for the lifting device, the driving device is a driving motor, and the control unit forms a double closed-loop control of the driving device through the current detection unit, the position signal detection unit and the motor drive unit to drive the start and stop of the driving motor. According to the method of the present invention, the lifting device includes: a bracket, a lifting beam, a sprocket chain device, and a guide rail mechanism; one end of the bracket is connected to the platform, and the other end is connected to the lifting beam; the lifting beam is installed on the guide rail mechanism; the guide rail mechanism is fixed on the column and slides up and down along the column; the sprocket chain device includes a sprocket and a chain, the sprocket is installed on the crossbeam, the chain is respectively wound around the driving device and the sprocket, and the two ends of the chain are respectively fixedly connected to the upper and lower surfaces of the lifting beam; the driving device is used to drive the chain to operate, and the chain drives the lifting beam to slide on the guide rail mechanism; the lifting beam drives the platform to pitch and swing.

[0018] According to the method of the present invention, the lifting device includes: an electric latch installed on the lifting beam; a hole structure or a groove structure is provided on the column, and the electric latch can be locked with the hole structure or the groove structure.

[0019] According to the method of the present invention, the electric push rod and the lifting device are pushed out and touch the limit switch to close, which proves that the electric bolt is locked.

[0020] According to the method of the present invention, the sea condition simulation test platform also includes a bracket cross axis, the bracket is a triangular truss structure, and three corner points are respectively provided with a pin connection structure, one corner point of the bracket is connected to the platform body through the bracket cross axis, and the other two corner points are connected to the lifting beam through a hinge shaft assembly, and the bracket drives the platform body to make pitch changes around the cross axis of the beam;

[0021] The platform comprises: a flipping device, which comprises: a push rod support and an electric push rod, wherein the push rod support is mounted on the column, one end of the electric push rod is mounted on the push rod support, and the other end is connected to the platform body; the electric push rod drives the platform body to swing left and right.

[0022] According to the method of the present invention, the platform also includes: a limit device, the limit device includes a limit switch and a collision assembly, the limit switch is installed on the column, the collision assembly is installed on the lifting beam, the limit switch and the collision assembly are used in combination, and the driving device stops running after the collision assembly hits the limit switch.

[0023] According to the method of the present invention, after the locking is proved to be completed, the controller controls the brake unit to close the brake of the motor, cut off the power to the motor, and finally cut off the power to the entire control system.

[0024] According to the method of the present invention, the preset stroke value is 0.5-2 mm.

[0025] According to the method of the present invention, the preset stroke value is 1 mm.

[0026] According to the method of the present invention, the position signal detection unit is an encoder.

[0027] The above technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0028] The present invention provides a control method for a sea condition simulation test platform, which can evaluate the reliability of newly developed electronic equipment and conduct similar simulation tests on land to simulate the ocean wind and wave conditions of the electronic equipment. Through an automated program, reliability verification tests of various wind and wave levels can be achieved, especially dual closed-loop control, which can simulate sea conditions with high precision and has good economic effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a left view of the sea condition simulation test platform of the present invention;

[0031] Figure 2 It is a front view of the sea condition simulation test platform of the present invention;

[0032] Figure 3 The figure is a structural diagram of the sea condition simulation test platform of the present invention;

[0033] Figure 4 This is a structural diagram of a support for a sea condition simulation test platform of the present invention;

[0034] Figure 5 This is a structural diagram of an electric latch of the sea condition simulation test platform of the present invention;

[0035] Figure 6 It is a sprocket structure diagram of the sea condition simulation test platform of the present invention;

[0036] Figure 7 This is a flow chart of the control method of the sea condition simulation test platform of the present invention;

[0037] In the figure: 1- platform, 2- cross beam cross axis, 3- bracket, 4- column, 5- guide device, 6- guide rail, 7- support rod, 8- cross beam, 9- inclined rod, 10- lifting beam, 11- chain adjustment device, 12- chain, 13- gantry support seat, 14- driving device, 15- push rod support, 16- electric push rod, 17- electric latch, 18- sprocket, 19- bracket cross axis, 20- hinge shaft assembly. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0040] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0041] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0042] Example:

[0043] like Figure 1 and Figure 2As shown, a sea condition simulation test platform is provided, including: a platform 1, a supporting device, a lifting device, and a driving device 14, wherein the platform 1 is a metal truss structure for simulating a deck; the bottom end of the supporting device is fixed to the ground, and the top end is connected to the platform 1, for supporting the platform 1 and the lifting device; one end of the lifting device is connected to the supporting device, and the other end is connected to the platform 1, and the driving device 14 provides power for the lifting device, and the lifting device drives the platform 1 to make pitch changes around the top end of the supporting device, so as to simulate various postures, impacts, and vibration states of the ship in wind and waves.

[0044] According to the above scheme, the supporting device is a portal structure, including: columns 4, beams 8 and beam cross shafts 2, the columns 4 are two, located on both sides of the portal structure and fixed on the ground, wherein the portal structure preferably also includes a portal support seat 13, the columns 4 are fixedly connected to the portal support seat 13, preferably with bolts; the support seat 13 is pre-buried in the ground, which is convenient for the installation and disassembly of the test platform, and when the test platform is moved or transferred, the fixing bolts of the columns 4 and the support seat 13 are removed to protect the overall structure of the test platform without damaging it; the beam 8 is vertically arranged at the upper ends of the two columns to form a "door" shape, so that the main structure of the test platform is more stable; the beam 8 is hinged to the platform body 1 through the beam cross shaft 2, so that the platform body 1 can swing in all directions around the center of the beam cross shaft 2.

[0045] According to the above scheme, the lifting device includes: a bracket 3, a lifting beam 10, a sprocket chain device, and a guide rail mechanism; one end of the bracket 3 is connected to the platform 1 through a pin shaft, and the other end of the bracket 3 is connected to the lifting beam 10 through a bracket cross shaft 19, so that the platform 1, the bracket 3 and the lifting beam form a triangular structure in the longitudinal section; the lifting beam 10 is installed on the guide rail mechanism through a lifting beam mounting seat, and the guide rail mechanism is fixed on the column 4, sliding up and down along the column 4, driving one end of the bracket 3 to move up and down in the vertical direction of the ground, and the other end of the bracket 3 drives the platform 1 to pitch around the cross beam 8 to simulate the working conditions of the ship at sea; the sprocket chain device includes as follows Figure 6 The sprocket 18 and chain 12 shown in the figure, the sprocket 18 is installed on the cross beam 8, the chain 12 is respectively wound around the driving device 14 and the sprocket 18, and the two ends of the chain 12 are respectively fixedly connected to the upper and lower surfaces of the lifting beam 10; the driving device 14 is used to drive the chain 12 to operate, and the chain 12 drives the lifting beam 10 to slide on the guide rail mechanism.

[0046] like Figure 4As shown, according to the above scheme, it further includes a bracket cross axis 19, the bracket 3 is a triangular truss structure, and pin connection structures are respectively set at the three corner points. One end of the bracket 3 is connected to the platform 1 through the bracket cross axis 19, and the other two ends are connected to the lifting beam 10 through the hinge shaft assembly 20. The bracket 3 drives the platform 1 to pitch around the cross axis 2 of the beam.

[0047] According to the above scheme, further, the platform also includes: a flipping device, which includes a push rod support 15 and an electric push rod 16. The push rod support 15 is installed on the column 4 to provide an installation platform for the electric push rod 16. One end of the electric push rod 16 is fixedly installed on the push rod support 15, and the other end is connected to the platform body 1. The electric push rod 16 drives the platform to flip by performing a stretching movement. Preferably, the bracket cross axis 19 is concentric with the column cross beam cross axis 2, so that there will be no jamming when the platform body pitches.

[0048] According to the above scheme, further, the guide rail mechanism also includes: a guide device 5 and a guide rail 6, and the guide rail 6 is installed on the column 4; one end of the guide device 5 is fixedly connected to the lifting beam 10, preferably by bolt connection, and the other end is installed on the guide rail 6, and sliding components such as pulleys are provided between the guide device 5 and the guide rail 6, so that the guide device 5 can slide up and down along the guide rail 6.

[0049] According to the above solution, the lifting device further comprises: a chain adjusting device 11 for adjusting the tension of the chain. One end of the chain adjusting device 11 is connected to the end of the chain 12 , and the other end is connected to the lifting beam 10 .

[0050] According to the above solution, further, the lifting device also includes: Figure 5 The electric latch 17 shown is installed on the lifting beam 10; the column is provided with a hole structure or a groove structure, and the electric latch 17 can be locked with the hole structure or the groove structure.

[0051] According to the above scheme, further, the platform also includes: a limit device, the limit device includes a limit switch and a collision assembly, the limit switch is installed on the column 4, the collision assembly is installed on the lifting beam 10, preferably installed at both ends of the lifting beam 10, the limit switch and the collision assembly are used in conjunction with each other, and the driving device 14 stops running after the collision assembly hits the limit switch to prevent the operating position of the lifting beam 10 from exceeding the limited range, causing the swing amplitude of the platform body 1 to exceed the limit and damage the platform.

[0052] like Figure 3As shown, according to the above scheme, further, the platform 1 is a metal truss structure in the shape of a bow, which simulates the real ship structure to the greatest extent.

[0053] According to the above scheme, further, the supporting device also includes: a support rod 7, which is used to improve the overall stability of the platform; one end of the support rod 7 is fixedly installed on the wall, and the other end is fixedly connected to the column, and the support rod 7 is perpendicular to the column 4; there is at least one support rod 7.

[0054] According to the above scheme, further, the supporting device also includes: an inclined rod 9, one end of which is fixedly mounted on the cross beam 8, and the other end is fixedly mounted on the column 4, and the angle between the inclined rod 9 and the column 4 is an acute angle.

[0055] According to the above scheme, further, the sea condition simulation test platform is installed in a foundation pit with a certain depth, the depth of the foundation pit is less than the height of the sea condition simulation test platform, the foundation pit is a rectangular structure, the length of which is slightly greater than the length of the platform 1, preferably greater than 1-3 meters, and standing on the edge of the pit can facilitate experiments on the platform 1.

[0056] According to the above-mentioned sea condition simulation test platform, a matching sea condition simulation test platform control method is provided, wherein the control system of the control method comprises: a control unit, a current detection unit, a position signal detection unit, a motor drive unit, a drive motor, a brake unit, a limit switch and a human-machine interface;

[0057] The control unit forms a double closed-loop control of the drive device through the current detection unit, the position signal detection unit and the motor drive unit, and the motor drive unit drives the start and stop of the drive device;

[0058] During the startup process, the sea condition simulation test platform is in the initial position when the platform is horizontal;

[0059] The control unit is operated through a human-machine interface to realize double closed-loop control of the drive motor and achieve zero-speed holding, that is, the output torque is equal to the load torque;

[0060] The brake unit is turned on and a certain preset stroke value is lifted, the electric push rod and the lifting device are retracted, and the limit switch is touched to open. After the control unit receives the opening signal of the limit switch, the cyclic operation process is started;

[0061] During the cyclic operation, the lifting device and the electric push rod move according to the programmed amplitude, time and number of cycles under the control of the double closed loop;

[0062] After the cycle is completed, the platform moves to a horizontal position;

[0063] The electric push rod and lifting device are pushed out, and the limit switch is closed, which proves that the locking is completed;

[0064] The lifting device drives the platform to pitch and swing;

[0065] The electric push rod drives the platform to swing left and right.

[0066] According to the method of the present invention, the driving device provides power for the lifting device, the driving device is a driving motor, and the control unit forms a double closed-loop control of the driving device through the current detection unit, the position signal detection unit and the motor drive unit to drive the start and stop of the driving motor.

[0067] According to the method of the present invention, the control unit forms a double closed-loop control of the driving device through the current detection unit, the position signal detection unit and the motor driving device to drive the start and stop of the lifting device; the lifting device drives the platform to pitch and swing.

[0068] According to the method of the present invention, the driving device is a driving motor, and the control unit forms a double closed-loop control of the driving device through the current detection unit, the position signal detection unit and the motor drive unit to drive the start and stop of the driving motor.

[0069] According to the method of the present invention, the platform includes: a flipping device, which includes a push rod support and an electric push rod, the push rod support is installed on the column, one end of the electric push rod is installed on the push rod support, and the other end is connected to the platform body; the electric push rod drives the platform body to swing left and right.

[0070] According to the method of the present invention, the platform also includes: a limit device, the limit device includes a limit switch and a collision assembly, the limit switch is installed on the column, the collision assembly is installed on the lifting beam, the limit switch and the collision assembly are used in combination, and the driving device stops running after the collision assembly hits the limit switch.

[0071] According to the method of the present invention, after the locking is proved to be completed, the controller controls the brake unit to close the brake of the motor, cut off the power to the motor, and finally cut off the power to the entire control system.

[0072] According to the method of the present invention, the preset stroke value is 0.5-2 mm.

[0073] According to the method of the present invention, the preset stroke value is 1 mm. After a large number of experiments, studies have shown that when the preset stroke value is 1 mm, the simulation of sea conditions is most accurate and is the optimal value.

[0074] According to the method of the present invention, the position signal detection unit is an encoder.

[0075] like Figure 7 This is a flow chart of the sea condition simulation test platform control method of the present invention.

[0076] The control system of the control method comprises: a control unit is Figure 7 The PLC, current detection unit, and position signal detection unit in the Figure 7 The encoder and motor drive unit in the Figure 7 The inverter, drive motor, brake unit (normally closed brake), limit switch and human-machine interface are included; the PLC controls the drive motor by controlling the frequency of the inverter, and the encoder collects signals from angle / displacement / speed sensors. In this method, the encoder is preferably used to collect speed signals and position signals.

[0077] The control unit forms a double closed-loop control of the drive device through the current detection unit, the position signal detection unit and the motor drive unit, and the motor drive unit drives the start and stop of the drive device; the current detection unit is for current control, signal feedback and control instructions, and the position signal detection unit is an encoder.

[0078] During the startup process, the sea condition simulation test platform is in the initial position when the platform is horizontal;

[0079] The control unit is operated through a human-machine interface, i.e., a human-machine interaction interface, to realize double closed-loop control of the drive motor and to achieve zero-speed holding, i.e., the output torque is equal to the load torque;

[0080] The brake unit is turned on and a certain preset stroke value is lifted, the electric push rod and the lifting device are retracted, and the limit switch is touched to open. After the control unit receives the opening signal of the limit switch, the cyclic operation process is started;

[0081] During the cyclic operation, the lifting device and the electric push rod move according to the programmed amplitude, time and number of cycles under the control of the double closed loop;

[0082] After the cycle is completed, the platform moves to a horizontal position;

[0083] The electric push rod and lifting device are pushed out, and the limit switch is closed, which proves that the electric bolt is locked;

[0084] The lifting device drives the platform to pitch and swing, that is, the lifting beam drives the platform to pitch and swing;

[0085] The electric push rod drives the platform to swing left and right.

[0086] Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that these operations be performed in the particular order shown or performed sequentially, or requiring that all illustrated operations be performed to achieve the desired results. In some cases, multitasking and parallel processing may be advantageous. In addition, the separation of various system modules and components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product, or packaged into multiple software products.

[0087] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In some implementations, multitasking and parallel processing may be advantageous.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling a sea condition simulation test platform, characterized in that: The sea condition simulation test platform comprises: a platform, a supporting device, an electric push rod, a lifting device and a driving device. The platform is a metal truss structure used to simulate a deck; the bottom end of the supporting device is fixed to the ground, and the top end is connected to the platform, used to support the platform and the lifting device; one end of the lifting device is connected to the supporting device, and the other end is connected to the platform; one end of the electric push rod is fixedly installed, and the other end is connected to the platform; the electric push rod drives the platform to swing left and right; The control system of the control method comprises: a control unit, a current detection unit, a position signal detection unit, a motor drive unit, a drive motor, a brake unit, a limit switch and a human-machine interface; The control unit forms a double closed-loop control of the drive device through the current detection unit, the position signal detection unit and the motor drive unit, and the motor drive unit drives the start and stop of the drive device; During the startup process, the sea condition simulation test platform is in the initial position when the platform is horizontal; The control unit is operated through a human-machine interface to realize double closed-loop control of the drive motor and achieve zero-speed holding, that is, the output torque is equal to the load torque; The brake unit is turned on and a certain preset stroke value is lifted, the electric push rod and the lifting device are retracted, and the limit switch is touched to open. After the control unit receives the opening signal of the limit switch, the cyclic operation process is started; During the cyclic operation, the lifting device and the electric push rod move according to the programmed amplitude, time and number of cycles under the control of the double closed loop; After the cycle is completed, the platform moves to a horizontal position; The electric push rod and lifting device are pushed out and the limit switch is touched to close; The lifting device drives the platform to pitch and swing; The electric push rod drives the platform to swing left and right; The lifting device drives the platform to make pitch changes around the top of the supporting device; the driving device provides power for the lifting device, and the driving device is a driving motor. The control unit forms a double closed-loop control of the driving device through the current detection unit, the position signal detection unit and the motor drive unit to drive the start and stop of the driving motor.

2. The sea condition simulation test platform control method according to claim 1, characterized in that: The lifting device includes: a bracket, a lifting beam, a sprocket chain device, and a guide rail mechanism; one end of the bracket is connected to the platform body, and the other end is connected to the lifting beam; the lifting beam is installed on the guide rail mechanism; the guide rail mechanism is fixed on the column and slides up and down along the column; the sprocket chain device includes a sprocket and a chain, the sprocket is installed on the crossbeam, the chain is respectively wound around the driving device and the sprocket, and the two ends of the chain are respectively fixedly connected to the upper and lower surfaces of the lifting beam; the driving device is used to drive the chain to operate, and the chain drives the lifting beam to slide on the guide rail mechanism; the lifting beam drives the platform body to pitch and swing.

3. The sea condition simulation test platform control method according to claim 2, characterized in that: The lifting device comprises: an electric latch, which is installed on the lifting beam; a hole structure or a groove structure is provided on the column, and the electric latch can be locked with the hole structure or the groove structure.

4. The sea condition simulation test platform control method according to claim 3, characterized in that: The electric push rod and the lifting device are pushed out, and the limit switch is closed, which proves that the electric bolt is locked.

5. The sea condition simulation test platform control method according to claim 4, characterized in that: The sea condition simulation test platform also includes a bracket cross axis, the bracket is a triangular truss structure, and three corner points are respectively provided with a pin connection structure, one corner point of the bracket is connected to the platform body through the bracket cross axis, and the other two corner points are connected to the lifting beam through a hinge shaft assembly, and the bracket drives the platform body to make pitch changes around the cross axis of the beam; The platform comprises: a flipping device, which comprises: a push rod support and an electric push rod, wherein the push rod support is mounted on the column, one end of the electric push rod is mounted on the push rod support, and the other end is connected to the platform body; the electric push rod drives the platform body to swing left and right.

6. The sea condition simulation test platform control method according to claim 2, characterized in that: The platform also includes: a limit device, which includes a limit switch and a collision assembly. The limit switch is installed on the column, and the collision assembly is installed on the lifting beam. The limit switch and the collision assembly are used in conjunction with each other. After the collision assembly hits the limit switch, the driving device stops running.

7. The sea condition simulation test platform control method according to claim 1, characterized in that: After the locking is completed, the controller controls the brake unit to cut off the power, that is, the brake unit is closed, the motor is cut off, and finally the entire control system is cut off.

8. The sea condition simulation test platform control method according to claim 1, characterized in that: The preset stroke value is 0.5-2 mm.

9. The sea condition simulation test platform control method according to claim 8, characterized in that: The preset stroke value is 1 mm.

10. The sea condition simulation test platform control method according to claim 1, characterized in that: The position signal detection unit is an encoder.

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