KR102293852B1 - Method and Apparatus of Automatic Planar motion mechanism test for Ship Maneuverability in Circulating water channel - Google Patents

Abstract

Disclosed is an automatic circulating tank planar motion device test method for the performance test of a ship performed by an automatic circulating tank PMM testing device. The plane exercise device test method for the performance test of a ship performed by the automatic circulation water tank PMM test apparatus according to an embodiment of the present invention includes an initial test condition acquisition step of obtaining the initial test conditions by providing an initial test condition input interface; Based on the PMM test execution step and the PMM test result of performing a planar motion mechanism test (Planar Motion Mechanism Test) including a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test under the initial test conditions It includes a result interpretation step of interpreting the performance test results of the busbar under test.

Description

{Method and Apparatus of Automatic Planar motion mechanism test for Ship Maneuverability in Circulating water channel}

The present invention relates to a method and apparatus for testing an automatic circulating water tank plane motion device for a performance test of a ship, and more particularly, to automatically perform a Planar Motion Mechanism Test of a bus in a circulating water channel. It relates to a method and apparatus capable of testing ship performance by performing it.

The purpose of conducting the pilot model test of a ship or offshore plant platform floating body is to predict the performance of various maneuvering movements such as acceleration/deceleration, shifting, turning, stopping, and backward, which are the steering performance of a ship. Steering performance, one of the fluid performance of a ship, collectively refers to straight-line performance and turning performance, and is directly related to the ship's ability to follow a preset trajectory or arrive at a target point. In particular, for maneuvering to avoid bad weather conditions or for stable navigation on coasts with many obstacles, the steering performance of a ship is a very important issue that is directly related to the survivability of the ship.

There are two main methods of ship piloting model test. One of them is a captive model test, which uses a forced oscillation device such as a Planar Motion Mechanism to force a programmed specific motion to the bus, and the surrounding fluid force acting at this time is measured with a component ( Load cell), and the other method is a free running model test, which is performed by applying the pilot motion scenario of a real ship trial run to the mother ship in the same way, and the International Maritime Organization (IMO) It is to directly evaluate whether the various criteria required for turning radius and zigzag test are satisfied.

In 2002, IMO enacted regulations related to the maneuverability of ships (IMO, 2002a; IMO, 2002b), making it mandatory for all ships to have a certain level of maneuverability. Accordingly, the International Towing Tank Conference (ITTC), an international association organization related to model tanks, organizes the model test method and the real ship test operation method (ITTC, 2002a; ITTC, 2002b; ITTC, 2002c) to estimate the accurate steering performance of the real ship. Therefore, each related study recommends following these methods.

Performing the bus plane's Planar Motion Mechanism test in a circulating water channel is also one of the main methods used to measure the steering capability of a solid ship. Korean Patent Laid-Open Publication No. 10-2017-0121975, the bow angle forced oscillation device and test technique for obtaining the steering motion fluid force differential coefficient of a high-speed ship establishes a steering motion mathematical model through the fluid force differential coefficient obtained through the model test It is possible to do this, and by using it, a test technique is disclosed that provides a straight-line stability level according to the speed and cruising posture of a high-speed craft.

In order to accurately evaluate the maneuverability of a ship, it is necessary to repeatedly perform the experiment under various experimental conditions. However, the conventional ship performance test apparatus or test technique, including the test technique described in the prior literature introduced above, is the result of the change of the test conditions, the acquisition of test data under the changed test conditions, and the analysis of results based on the obtained test data. Since continuous intervention was required, there were certain problems in terms of the duration, cost, and accuracy of the results.

Korean Patent Publication No. 10-2017-0121975 (2017. 11. 3)

The problem to be solved by the present invention is to provide a method and apparatus for automatically performing the entire plane motion device test of a busbar in a circulating water tank and interpreting the results.

In one aspect of the present invention, the planar motion device test method for the performance test of a ship performed by an automatic circulating water tank planar motion device (Planar Motion Mechanism, hereinafter referred to as PMM) according to an embodiment of the present invention is an initial test condition input interface The initial test condition acquisition step of obtaining the initial test conditions by providing It includes the result interpretation step of interpreting the performance test results of the test target bus based on the

In the step of performing the PMM test, a combination test in which at least two or more tests of the static drift angle test, the static rudder angle test, the pure lateral sway test and the pure bow sway test are combined and tested together under the initial test conditions. The combination test step may be further included.

The initial test conditions are the initial flow rate of the circulating water tank in which the test subject bus is disposed, the drift angle applied to the test subject bus bar, left and right sway amplitude, left and right sway period, bow sway amplitude, bow sway period, rudder angle, combination test information may include, and the combination test information may indicate a test performed together in a combination test performed in the combination test step.

In the step of performing the PMM test, the static drift angle test, the static rudder angle test, the pure left and right swing test, the pure bow shake test, and the combination test are performed under the initial test conditions, and the flow rate of the circulating water tank is changed and the The method may further include a repeated test performing step of repeatedly performing the static drift angle test, the static steering angle test, the pure lateral sway test, the pure bow sway test, and the combination test for a preset number of times.

The PMM test performance result is the dynamic fluid force micro-modulus obtained through the PMM test, and the step of interpreting the result is the step of determining the stability and maneuverability of the test subject bus based on the dynamic fluid force micro-modulus obtained through the PMM test. may include

In another aspect of the present invention, the automatic circulation water tank PMM test apparatus according to the embodiment of the present invention is a circulation water tank that circulates water to generate a constant flow rate in the test area, and applies an external force to a model ship in the circulation water tank to test the model ship. and a PMM test device for irradiating a fluid force acting during a steering motion, and a controller for controlling the circulating water tank and the PMM test device, wherein the controller is functionally connected to a processor and the processor to receive and store data from the processor. or a memory for providing data to the processor, wherein the processor provides an initial test condition input interface to obtain initial test conditions, and under the initial test conditions, a static drift angle test, a static rudder angle test, a pure sway test, It is set to perform a PMM test including a pure bow shake test and a combination test, and to interpret the performance test result of the test target bus based on the PMM test result to generate analysis result information.

The PMM test performance result is the dynamic fluid force micro-module obtained through the PMM test, and the information on the analysis result may be the stability and maneuverability of the test target bus determined based on the dynamic fluid force micro-modulus obtained through the PMM test. .

According to the automatic circulating water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention, the operator's intervention can be minimized in the process of testing the ship's performance by changing the test conditions, so the operation convenience is high. In addition, more accurate test results can be obtained by testing the performance of the busbar by conducting the ship performance test under various conditions with a short time and low cost.

1 is a flowchart showing each step of a plane motion test method for a ship performance test performed by an automatic circulating water tank PMM test apparatus according to an embodiment of the present invention.
2 to 5 are graphs showing examples of a static drift angle test, a pure lateral sway test, a pure bow sway test, and a combination test, respectively.
6 schematically shows each procedure of a plane motion device test method for a ship performance test performed by an automatic circulation water tank PMM testing device according to an embodiment of the present invention.
7 is a block diagram schematically illustrating the configuration of the control unit of the automatic circulation water tank PMM testing apparatus in which the planar motion apparatus test method for the performance test of a ship according to an embodiment of the present invention can be implemented.

In describing the embodiments of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification. The terminology used in the detailed description is for the purpose of describing embodiments of the present invention only, and should in no way be construed as limiting. Unless explicitly used otherwise, expressions in the singular include the meaning of the plural. In this description, expressions such as “comprising” or “comprising” are intended to indicate certain features, numbers, steps, acts, elements, some or a combination thereof, one or more other than those described. It should not be construed as excluding the presence or possibility of other features, numbers, steps, acts, elements, or any part or combination thereof.

In each system shown in the figures, elements in some instances may each have the same reference number or a different reference number to suggest that the represented element may be different or similar. However, elements may have different implementations and work with some or all of the systems shown or described herein. The various elements shown in the drawings may be the same or different. Which one is referred to as the first element and which is referred to as the second element is arbitrary.

In the present specification, when any one component 'transmits' or 'provides' data or signal to another component means that one component directly transmits data or signal to another component, as well as at least one or more other components. Transmitting data or signals to other components via other components.

In this specification, 'control unit' and 'control device' refer to a computing device in which all or some steps of the automatic circulation water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention can be implemented, and one or It can be more than one physical or logical entity. When the controller or the control device is divided into a plurality of physical entities and implemented, the management subjects of each physical entity may be different from each other.

All or some steps of the automatic circulating water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention are implemented by one physical or logical computing device or distributed by two or more physical or logical computing devices and can be implemented.

The 'control unit' or 'control device' may include a DB, which means a functional and structural combination of software and hardware for storing information corresponding to each database, and the DB may be implemented as at least one table, and stored in the database. A separate database management system (DBMS) for retrieving, storing, and managing information may be further included. In addition, it can be implemented in various ways such as a linked-list, a tree, and a relational database, and includes all data storage media and data structures that can store information corresponding to the database.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and/or systems described herein. However, this is merely an example and the present invention is not limited thereto.

1 is a flowchart showing each step of a plane motion device test method for a ship performance test performed by an automatic circulating water tank PMM testing device according to an embodiment of the present invention.

The plane exercise device test method for the performance test of a ship performed by the automatic circulation water tank PMM test apparatus according to an embodiment of the present invention provides an initial test condition input interface to obtain an initial test condition obtaining step ( S10), a PMM test performing step (Planar Motion Mechanism Test) including a static drift angle test, a static rudder angle test, a pure lateral oscillation test, a pure bow sway test and a combination test under the initial test conditions ( S20) and a result interpretation step (S30) of interpreting the performance test result of the test target bus based on the PMM test result.

The automatic circulating water tank plane motion device test method for the performance test of a ship according to an embodiment of the present invention may be performed by an automatic circulating water tank PMM device. The automatic circulating water channel is a device that can automatically perform the entire test of the plane motion device of the busbar in the circulating water tank simply by setting the initial conditions and issuing the test start control command, interpreting the results and writing a report. It may be composed of a circulating water tank, a PMM test device, and a control unit. The control unit may control the automatic circulation water tank PMM apparatus so that the plane motion apparatus test method for the performance test of a ship according to an embodiment of the present invention can be performed by the automatic circulation water tank PMM apparatus.

The circulating water tank is a device that circulates water to generate a constant flow rate in the test area. In the PMM test step to be described later, the controller adjusts/controls the rotation speed of the impeller to change the flow rate inside the circulating water tank in the repeated test process to create various test environments.

Planar Motion Mechanism Tester is a device that applies external force to the model of a ship or an underwater navigation body and investigates the fluid force acting during the steering motion of the mother ship.

The control unit controls the PMM device according to the initial condition so that each step of the planar motion device test method for the performance test of a ship according to an embodiment of the present invention, which will be described in more detail later, can be implemented.

In the initial test condition acquisition step S10 of obtaining the initial test conditions by providing an initial test condition input interface, the initial test conditions may be obtained through an input interface provided to the operator by the automatic circulating water tank PMM test apparatus. The operator can provide the initial test conditions to the automatic circulating water tank PMM tester by inputting the initial conditions through the input interface. According to an embodiment, the input interface may be provided as an operator terminal, attached to an automatic circulating water tank PMM test device, or provided in the form of an input device connected through a wired/wireless communication network.

The initial test conditions are the initial flow velocity of the circulating water tank in which the test subject bus (model ship) is placed, the drift angle applied to the test subject bus bar, the left and right swing amplitude, the left and right swing period, the swing amplitude, the bow swing period, the initial phase angle, It may include information indicating the number of repetitions of the acceleration/deceleration time, steering angle, combination test information, and the PMM test to be described later.

Combination test information includes at least two or more tests of each stage constituting the PMM test to be described later, for example, a static drift angle test corresponding to a static test, a pure lateral sway test corresponding to a static rudder angle test and a dynamic test, and a pure bow sway test. Information that directs the individual tests to form a combination test in which tests are combined and tested together. The operator can determine the contents of the combination test to be performed in the PMM test step to be described later by inputting the combination test information. In an embodiment, the combination test information may include a list of tests to be tested in combination.

The PMM test performing step (S20) is a plane exercise device test (Planar) including a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test under the initial test conditions obtained in the initial test condition acquisition step (S10). Motion Mechanism Test) is performed.

The static drift angle test, static rudder angle test, pure lateral sway test, and pure bow sway test exemplified as detailed test items constituting the above-mentioned PMM test are not limited in their order, and the order may be changed according to the setting or some tests may be omitted. can do.

The PMM test performing step (S20) is a combination test step of performing a combination test in which at least two or more tests among a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test are combined and tested together under the initial test conditions. may further include. In this case, the detailed test constituting the combination test may be a plurality of detailed tests selected from among the detailed tests described above. As described above, the detailed test items constituting the combination test may be indicated by the combination test information obtained through the initial test condition acquisition step (S10).

Detailed test items constituting the PMM test and the PMM test performed in the PMM test performing step (S20) of the planar motion device test method for the performance test of a ship according to an embodiment of the present invention will be described in more detail.

The PMM test can be performed to obtain the dynamic fluid force differential coefficient included in the model when the bus is maneuvering using the PMM device. The dynamic fluid force differential coefficient can be used for the analysis of the horizontal straight line stability of the busbar and the simulation of steering performance such as turning performance. The dynamic fluid force beauty coefficient can be divided into forward and backward sway, left and right oscillation, and bow sway related coefficients according to the direction of motion in the horizontal plane of the busbar. In addition, since micro-motion is assumed in the linear stability analysis, only linear terms among polynomial terms of the dynamic fluid force model can be considered. However, in the case where the lateral sway velocity and the angular velocity of the bow swivel are not small, such as in a turning motion, a non-linear term among polynomial terms should also be considered. According to which of these linear or non-linear terms the dynamic fluid force differential coefficient is related, it can be divided into linear and non-linear coefficients.

The PMM test can be divided into a horizontal PMM (Horizontal PMM, hereinafter HPMM) test and a vertical PMM (Vertical PMM, hereinafter VPMM) test depending on which plane the forced oscillation motion occurs in the horizontal plane or the vertical plane. Because offshore plant platforms including ships move on the water surface, HPMM tests are performed, and underwater vehicles such as unmanned submersibles, submarines, and torpedoes perform VPMM tests.

In the PMM test, the busbar is towed at a constant speed or a flow having a corresponding flow velocity is generated, and the fluid force acting at that time is measured by applying a predetermined pattern of motion to the flow of the busbar. The PMM device is a forced oscillation device that can apply a predetermined pattern of motion to the busbar.

HPMM can change the bow and swing angle of the mother ship by a certain point angle without shaking, and can generate left and right shake and swing shake in the mother ship. Then, a displacement measuring sensor is installed in the device to measure the time series of the left-right swing displacement and the bow swing angular displacement of the busbar. The HPMM test may consist of a static drift test, a pure sway test, a pure yaw test, and a combined test. Here, the static drift angle test is a static test without acceleration, and the rest of the tests are dynamic tests for harmonic motion in which the speed and acceleration of the busbar occur simultaneously. In the case of a general surface ship equipped with rudder, static rudder angle test, static rudder angle and drift angle test, bow sway and rudder angle combination test, etc. can be added. Only pure bow sway test and drift angle-bow sway combination test can be performed.

In the static drift angle test, as shown in FIG. 2, the drift angle, which is the difference between the traveling direction of the busbar and the turning angle, is made constant, and the dynamic fluid force acting by the surrounding fluid is measured while it is stopped in the fluid flow. At this time, the motion applied to the busbar and the measured dynamic fluid force can be expressed as Equations 1 and 2.

[Equation 1]

[Equation 2]

1, v'

-β로 나타낼 수 있다. V₀는 회류수조의 유속이다. 수학식 2의 동유체력 모델을 좌우동요 속도 대신 편류각으로 나타내는 경우에는 v를 모두 β로 바꾸어줄 수 있다. 하첨자 M은 시험시 계측되는 값, 하첨자 0은 센서의 정렬오차 또는 모선의 제작오차 등에 의한 값을 나타낸다. 이 값은 모선과 실선의 경우가 서로 다르고, 실선 경우에는 이러한 성분이 없다고 가정할 수 있다.Since the drift angle β in Equation 1 generally has a small value, only the first-order terms of the sine and cosine functions are selected and u'

1, v'

It can be expressed as -β. V ₀ is the flow rate of the circulating water tank. When the dynamic fluid force model of Equation 2 is expressed as a drift angle instead of a left-right swing speed, all v can be changed to β. The subscript M denotes a value measured during testing, and the subscript 0 denotes a value caused by a sensor alignment error or busbar manufacturing error. It can be assumed that this value is different in the case of the bus line and the solid line, and there is no such component in the case of the solid line.

As shown in FIG. 3, the pure left-right sway test measures the dynamic fluid force acting at this time while harmoniously changing only the left-right displacement without changing the turning angle of the ship. The left and right sway displacement, speed, and acceleration of the planar motion device can be expressed as Equation (3).

[Equation 3]

Here, A, ω, ε _y represent the amplitude of the plane motion device in the y ₀ direction, the oscillation frequency (rad/s), and the phase angle at time 0 sec, respectively. If Equation 3 is converted to the ship's fixed coordinate system, the motion variables and the measured dynamic fluid force model during the pure lateral sway test can be expressed as Equations 4 and 5.

[Equation 4]

[Equation 5]

Even in the pure side-to-side motion test, the dynamic fluid force differential coefficients related to side-to-side motion X _vv , Y _v , Y _vvv , Y _v|v| , N _v , N _vvv , N _v|v| However, since these coefficients usually use the values obtained from the static drift angle test, only the added mass and added mass moment of inertia coefficients for the left and right swing acceleration are calculated in the pure lateral sway test.

In the pure bow swing test, as illustrated in FIG. 4, in addition to moving the PMM left and right, the bow swing angle is also changed so that the bow direction is always in contact with the trajectory. At this time, the forward yaw angle can be expressed as Equation (6).

[Equation 6]

At this time, in order to obtain a pure bow sway without a sway velocity component, the yaw angle should not be changed independently of the lateral sway displacement, and the amplitude and phase difference of the yaw angle should have the same relationship with the lateral swing displacement and flow rate as in Equation 7.

[Equation 7]

At this time, the forward and backward sway and lateral sway speed applied to the bus can be expressed as Equation (8).

[Equation 8]

Here, in the case of pure forward swing, the left and right swing speed of Equation 8 should be 0. By substituting Equation 3, Equation 6, Equation 7 into Equation 8, only when the condition of Equation 9 is satisfied, the left and right sway speed becomes 0 during the pure bow shake test.

[Equation 9]

Equation 9 cannot be satisfied in general, and is satisfied only when _{ψ 0 ≪1.} Therefore, _{if the angle of ψ 0} is about 15 degrees or less, it can be assumed that the pure bow sway condition is satisfied.

The dynamic fluid force model measured at the time of pure bow motion can be expressed as Equation (10).

[Equation 10]

5 shows a case in which a bow sway and drift angle test are combined as an example of a combination test. In the bow sway and drift angle combination test, as shown in FIG. 5, the set drift angle is constant, so only the initial drift angle needs to be added from the pure bow sway angular displacement. This is because the sign of the bow swing angle and the drift angle are the same during the bow swing.

[Equation 11]

Here, the swing angle amplitude ψ ₀ and the phase difference ε _ψ are the same as in the case of the pure bow motion in Equation 7, and the motion variables are the same as in Equation 8, but v does not become 0 because there is a drift angle.

The dynamic fluid force model measured in the combination test is the same as the forward and backward oscillation dynamic fluid force model, the lateral oscillation dynamic fluid force model, and the forward oscillation dynamic fluid moment model acting on the helix. It can be expressed in the form of a quadratic polynomial that expresses an odd function as Because all the motion variables measured in the combination test are not 0, theoretically, all dynamic fluid force differential coefficients can be obtained. However, it is more accurate to obtain each dynamic fluid force differential coefficient when only the motion of the object under consideration occurs than when a complex motion occurs.

In the result analysis step of the plane motion device test method for the performance test of a ship according to an embodiment of the present invention, in order to obtain more accurate results, it is obtained through a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test. The dynamic fluid force minor coefficient is eliminated, and the static drift angle test, the static rudder angle test, the pure left and right swing test, and the pure bow shake test can obtain the non-linear dynamic fluid force micro coefficient through the combination test. .

As described above, after performing a static drift angle test, a static rudder angle test, a pure left-right swing test, a pure bow shake test, and a combination test under the initial flow rate conditions of the circulating water tank, adjust the impeller rotation speed to change the flow rate of the circulating water tank, Static drift angle test, static rudder angle test, pure lateral oscillation test, pure bow sway test and combination test can be performed under the changed circulating tank flow rate conditions. That is, each detailed test step can be repeated while changing the flow rate condition as much as a preset number of times. In an embodiment, the number of repetitions, whether detailed test items are performed, and detailed test items constituting the combination test may be determined based on information obtained in the initial test condition acquisition step.

Table 1 summarizes an example of the dynamic fluid force differential coefficient obtained through each detailed test item of the PMM test.

[Table 1]

The result interpretation step (S30) is a step of analyzing the performance test result of the test target bus based on the PMM test result.

The result interpretation step (S30) may include determining the stability and maneuverability of the test target bus based on the dynamic fluid force differential coefficient obtained through the PMM test.

The stability of a ship includes lateral sway stability, which is often expressed as stability, and course stability due to the ductility of left and right sway and bow sway. Here, the course stability can be analyzed, and it can be determined through the dynamic fluid force differential coefficient obtained in the PMM test performing step (S20). The maneuverability of the ship can be determined by using the turning test and the zigzag test simulation using the dynamic fluid force differential coefficient obtained in the PMM test execution step (S20).

6 schematically shows each procedure of the automatic circulation water tank plane exercise device test method for the performance test of a ship performed by the automatic circulation water tank PMM test apparatus according to the embodiment of the present invention described above.

7 is a block diagram schematically showing the configuration of the control unit of the automatic circulation water tank PMM test apparatus in which the automatic circulation water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention can be implemented.

As described above, the automatic circulation water tank PMM test apparatus in which the automatic circulation water tank planar motion apparatus test method for the performance test of a ship according to an embodiment of the present invention can be implemented includes a circulation water tank, a PMM test apparatus, and a control unit 50 do.

The circulating water tank is a device that circulates water to generate a constant flow rate in the test area.

The PMM test device is a device that applies an external force to the model ship and investigates the fluid force acting during the maneuvering movement of the model ship.

The control unit 50 controls the automatic circulation water tank PMM testing apparatus 100 according to the initial conditions to implement each step of the automatic circulation water tank plane exercise device test method for the performance test of the ship according to the embodiment of the present invention described above. make it possible

The controller 50 may include a processor 52 and a memory 54 . In one embodiment, the control module 50 may further include a transceiver 56 . The processor 52 , the memory 54 , and the transceiver 54 may be functionally coupled to each other. The memory 54 may store an algorithm and initial test conditions for implementing the automatic circulating water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention. The processor 52 may implement the automatic circulating water tank plane exercise device test method for the performance test of the ship according to the various embodiments described above.

The processor 52 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and/or data processing devices. Memory 54 may include read only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and/or other storage devices. When the embodiment is implemented in software, the above-described technique may be implemented as a module (process, function, etc.) that performs the above-described function. Memory 54 may be internal or external to processor 52 , and may be coupled to processor 52 by a variety of well-known means.

According to the automatic circulating water tank plane exercise device test method for the performance test of a ship according to an embodiment of the present invention, the operator's intervention can be minimized in the process of testing the ship's performance by changing the test conditions, so the operation convenience is high. , it is possible to obtain more accurate test results by testing the performance of the model ship under various conditions with less time and less cost.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

Claims (7)

In the plane motion device test method for the performance test of a ship performed by the automatic circulating water tank PMM test device,
By providing the initial test condition input interface, the initial flow velocity of the circulating water tank in which the test subject bus is placed, the drift angle applied to the test subject bus bar, left and right swing amplitude, left and right swing period, bow swing amplitude, bow swing cycle, rudder angle, combination an initial test condition obtaining step of obtaining initial test conditions including test information and information indicating the number of repetitions;
The process of performing a Planar Motion Mechanism Test based on the initial flow rate of the circulation water tank according to the initial test conditions was performed on the basis of the initial flow rate of the circulation water tank according to the initial test conditions. a PMM test performing step of repeatedly performing the plane exercise device test as many times as the number of times of information indicating the number of repetitions according to the initial test condition while changing the flow rate; and
a result interpretation step of interpreting the performance test result of the test target bus based on the PMM test result;
The combination test information is information indicating test items constituting a combination test that is tested together by combining at least two or more tests of a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test,
The plane exercise device test includes at least one or more of the static drift angle test, the static rudder angle test, the pure left and right swing test, the pure bow shake test, and the combination test,
The step of performing the PMM test is,
When repeatedly performing the plane motion device test while changing the flow rate of the circulating water tank, changing the test items constituting the plane motion device test or changing the test items constituting the combination test,
Automatic circulating water tank plane motion device test method for ship performance test.
delete delete delete According to claim 1,
The PMM test performance result is the dynamic fluid force micro coefficient obtained through the PMM test,
The step of interpreting the result comprises determining the stability and maneuverability of the test target bus based on the dynamic fluid force differential coefficient obtained through the PMM test.
a circulating water tank that circulates water to generate a constant flow rate in the test area;
a PMM testing device that applies an external force to the model ship in the circulating water tank to investigate the fluid force acting during the steering motion of the model ship; and
Including; a control unit for controlling the circulation water tank and the PMM test device;
The control unit is
processor; and
a memory functionally connected to the processor to receive and store data from the processor or provide data to the processor; and
The processor is
By providing the initial test condition input interface, the initial flow velocity of the circulating water tank in which the test subject bus is placed, the drift angle applied to the test subject bus bar, left and right swing amplitude, left and right swing period, bow swing amplitude, bow swing cycle, rudder angle, combination obtaining initial test conditions including test information and information indicative of the number of repetitions;
The process of performing a Planar Motion Mechanism Test based on the initial flow rate of the circulation water tank according to the initial test conditions was performed on the basis of the initial flow rate of the circulation water tank according to the initial test conditions. While changing the flow rate, the plane motion device test is repeatedly performed as much as the number of times of information indicating the number of repetitions according to the initial test conditions,
It is set to interpret the performance test result of the test target busbar based on the PMM test result to generate analysis result information,
The combination test information is information indicating test items constituting a combination test that is tested together by combining at least two or more tests of a static drift angle test, a static rudder angle test, a pure lateral sway test, and a pure bow sway test,
The plane exercise device test includes at least one or more of the static drift angle test, the static rudder angle test, the pure left and right swing test, the pure bow shake test, and the combination test,
The processor is
When the plane motion device test is repeatedly performed while changing the flow rate of the circulation water tank, the test items constituting the plane motion device test or the test items constituting the combination test are changed, an automatic circulation tank PMM test Device.
7. The method of claim 6,
The PMM test performance result is the dynamic fluid force micro-modulus obtained through the PMM test, and the analysis result information is the stability and controllability of the test subject bus determined based on the dynamic fluid force micro-modulus obtained through the PMM test, automatic, Circulating water tank PMM test device.

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