JP2831291B2 - Wave making equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-split type for a test tank.
The present invention relates to a wave making device, and more particularly to a multi-segment wave making device for forming a multi-directional wave.

[0002]

BACKGROUND ART Conventionally, for example, as shown in FIG. 3 a perspective view, are pivotally attached to the tank bottom 01 the lower end portion in a horizontal lateral axis,
A multi-segment type wave-making apparatus in which a plurality of flap type wave-makers 02 whose upper parts are rocked back and forth by a motor are closely arranged side by side in the left-right direction.
(Hereinafter simply referred to as “wave-making device”) 03 is known.
Then, each wave-making machine 02, of a single common controller 0
Simultaneously performing the same swing by 4, so that it generates a one-way wave magnitude variety.

[0003]

In the device, such as a child The object of the invention is to solve the above-
Since only unidirectional waves can be generated, multidirectional waves that form waves in any direction cannot be generated, and as a result, it is impossible to form a wave situation that sufficiently simulates the actual sea area,
Therefore, there is room for improvement in the reproducibility of the wave making device. The present invention has been proposed in view of such circumstances, and a multi-segment wave-making apparatus for generating a multi-directional wave capable of generating a multi-directional wave and thus excellent in simulating a wave situation in an actual sea area. The purpose is to provide.

[0005]

For this purpose, the present invention provides:
A large number of independently swingable flashes
In the multi-split wave-making apparatus juxtaposed flop type wave maker in the lateral direction of the tank, the large number of flaps type wave maker is divided into a plurality of blocks units, low in the respective block units <br / > number of wave maker flap position and block control unit is provided et the flap swing cycle control can be several
It is, in the respective block control unit, wave height, wave period, the wave direction angle setting, start and stop tuning control signal of the
A general control unit for transmitting a signal is provided .

[0006]

SUMMARY OF] According to this structure, the action of the lower SL is performed. (1) A multidirectional wave can be generated, and as a result, the simulating property of the wave condition in the actual sea area is enhanced. (2) One integrated controller unit enables independent control of all wavemakers, and as a result, one-man control can be realized. (3) The device is formed from a plurality of block units, and as a result, the addition and partial control of the device are facilitated.

[0007]

EXAMPLES To illustrate the invention with reference to the drawings attached to an embodiment applied to a multi-split wave-making device shown in FIG. 3, first, in FIG. 1 (A) a perspective view, reference numeral 1 is the left and right of the water tub 01 closely together are arranged in parallel in the direction, can be independently swung have any constant phase shows a multi few cars flap type wave maker, in this embodiment not shown the part However, 80 wavemakers 1 are provided . This example
Further multiple stand wave maker 1 is divided into a plurality of blocks units, and enter the flap position and period of each wave maker 1 in each block unit, the motor rotational speeds of the wave maker,
The speed and flap position are fed back to each wave maker 1
Are respectively provided. In this example,
Control unit 2 is provided five, each block control unit 2 is adapted to control the wave maker 1 to 16, respectively. Further, there is provided one general control unit 3 for inputting the setting of the wave height, wave period and wave direction angle to each block control unit 2 and for tuning the start and stop of each.
You .

[0008] Next, in FIG. 1 (B) (wave maker 1 part enlarged perspective view), reference numeral 4 is disposed on the rear side of the flap 9 that is pivotally mounted to the lower end to the bottom of the tank, and the top surface Indicates a vertical cubic motor support that is exposed from the water surface WL.
The motor support 4, directly connected to the distal end portion to the servo motor 7 with attached Rutotomoni proximal end is supported by a bearing 6 of the top surface the front end of the motor support table 4 to the top surface rear portion of the motor support table 4 The ball screw 5 is provided. Reference numeral 8 screwed a proximal end to a central portion of <br/> ball screw 5 shows a pivotally mounted rod on the upper end portion of the flap 9 the tip.

Further, as shown in FIG. 2A ( block diagram ) and FIG. 2B ( control system diagram ), a plurality of servo drivers 10 for driving one wavemaker 1 are provided.
Have been .

[0010] In such a device, as shown in FIG. 1 (B) and FIG. 2 (B), the one of the command signals produce any wave from the overall con torr unit 3 to each block control unit 2 is provided, Each servomotor 7 operates according to this command signal . By the operation ( rotation ) of the servo motor 7, the ball screw 5 rotates, the rod 8 connected thereto moves forward and backward, and the upper part of the flap 9 moves forward and backward,
An arc work top longitudinal flaps 9, which the front of the water of the flap 9 is pushed out by, is performed wave-making
You .

Further, regarding the input / output relationship of the signal, selection of start / stop, regular wave (wave which constantly generates the same wave height) or irregular wave (irregular wave whose wave height is not constant) is adjacent. Phase difference from flap ( multi-directional wave if there is a phase difference , unidirectional wave if there is no phase difference ),
Flap amplitude, period, computer processing sampling time
(1 to 10 msec), and the flap operation is performed according to the setting. For the flow of the signal, the above-mentioned setting input is performed by the overall control unit 3, where the output to each block control unit 2 is calculated, and the signal is output there. Receiving this signal, each block control unit 2 calculates the output value of each flap 9 to the servomotor 7, outputs the calculated value to each servomotor 7, and operates the flap 9. Further, the block control unit 2 controls the amplitude of the flap 9 and the rotation speed of the servomotor 7 by feedback control.

Here, in the method of realizing a multidirectional wave in the wave making device of the present invention, since each flap 9 can operate independently, a predetermined phase difference is given between adjacent flaps 9 so that the front face of each flap 9 can be provided. Of water is not extruded in the front direction, that is, in the vertical direction, but is extruded while being shifted obliquely. As a result, the water extruded in a displaced manner becomes a wave in an oblique direction, and further, by changing this constant phase difference arbitrarily, the direction in which the wave is generated also changes, so that an arbitrary multidirectional wave can be realized.

This constant phase difference is calculated by a calculation formula, and the operation phase difference δ of each wave-making cycle is obtained by the following formula. That is, there are M / b flaps 9 in M, all of which have a phase of 2π, and
The phase difference between the two flaps 9 is 2πb / M. Here, M: the length of the number of flaps 9 for a total phase difference of 2π of the continuous flaps 9 b: the length of one flap 9 θ: the wave direction angle with respect to the surface of the continuous flaps 9 (continuous flaps) (Length of one cycle of oblique wave (wavelength) k: Wave number g: Gravitational acceleration h: Hydrostatic deep angular frequency (2πf) ² = kgtanh (kh)

As described above , in the apparatus of this embodiment , one
The lock control unit is
Flap of each wave maker 1 controlled by the rule unit 2
9, the signal of the amplitude, period, and each flap phase difference is input,
The motor speed, speed, and speed of all wavemakers in the block
Feed back the lap position and
Lap control, which means that each
Each flap of the wave maker fluctuates independently by changing the phase.
Can be multi-directional waves
it can. Input to each block control unit
Input to the general control unit 3
The start / stop of each wave maker is synchronized
It can be carried out. As a result, it can be realized with conventional wave making equipment
Creating wave conditions that can sufficiently simulate actual sea areas that could not be
Becomes possible. In addition, the wave making device has multiple block units.
The wave-making equipment, and partial control
Becomes easier.

[0010]

As described in detail above, according to the present invention,
The following effects can be obtained. (1) One block control unit is
Of each wave generator controlled by the
Input the signal of lap amplitude, period, and each flap phase difference.
The motor speed and speed of all wavemakers in the block
Degrees, feed back the flap position and complete one block
All flap controls.
Invert each flap of each wave maker by changing the phase
To oscillate and realize multi-directional waves
be able to. (2) The signal input to each block control unit
Is input to the general control unit.
Te, the start / stop of each wave maker can and the child that is tuned to that. (3) According to the above (1) and (2), the conventional wave making device
A wave situation that can fully simulate the real sea area that could not be realized
Is possible. (4) The wave making device is composed of a plurality of block units.
This facilitates the addition and partial control of the wave making device.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which the present invention is applied to a multi-piece type wave making device shown in FIG. 3, (A) and (B) are perspective views, respectively.
It is a partial expansion perspective view.

FIG. 2 shows the system of FIG. 1, and (A) and (B) are a block diagram and a control system diagram, respectively.

FIG. 3 is a perspective view showing an example of a conventional multi-segment type wave making device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wave maker 2 Block control unit 3 General control unit 4 Motor support base 5 Ball screw 6 Bearing 7 Servo motor 8 Rod 9 Flap 10 Servo driver 01 Water tank WL Water surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-11411 (JP, A) JP-A-2-187640 (JP, A) JP-B-60-2611 (JP, B2) (58) Field (Int.Cl. ⁶ , DB name) F04D 35/00

Claims (1)

(57) [Claims] 1. An independent swing with an arbitrary constant phase
Such In many <br/> multi split wave-making device for a flap type wave maker juxtaposed in the lateral direction of the tank, the upper Kio number of flap type wave maker is divided into a plurality of blocks units, the respective flap position and flap small number of wave maker in block unit
The swing cycle control can be multiple block control unit is provided, the respective block control unit
, A general control unit that sends the wave height, wave period, wave direction angle setting, start and stop tuning control signals
Characterized in that is provided, wave-device.