KR102325957B1 - Apparatus and method for antenna deployment test - Google Patents

Abstract

The present invention relates to an antenna deployment test apparatus and an antenna test method using the same, the antenna deployment test apparatus comprising: a seating part where the antenna is mounted; a wire connected to a reflective panel that is spaced apart from a feeder of the antenna; and an operating part formed so that the length can be adjusted by winding or unwinding the wire, connected to the wire, and mounted on a strut of the antenna between the feeder and the reflective panel. The present invention proposes the antenna deployment test apparatus and the method that can stably support the deployed part of the antenna while testing the deployment characteristics of the antenna.

Description

Antenna deployment test apparatus and method {APPARATUS AND METHOD FOR ANTENNA DEPLOYMENT TEST}

The present invention relates to an antenna deployment test apparatus and method, and more particularly, to an antenna deployment test apparatus and method capable of stably supporting a deployed portion of an antenna while testing an antenna deployment operation mounted on an artificial satellite.

The antenna mounted on the satellite is an important part directly connected to the stable operation of the satellite. Therefore, it is necessary to verify the reliability of the antenna by performing various tests on the ground before the antenna is mounted on the artificial satellite.

For example, by deploying the reflective panel of the antenna on the ground and testing the deployment operation of the reflective panel, it is possible to verify the reliability of the antenna.

On the other hand, since the antenna is designed and manufactured for the purpose of operating in a zero-gravity environment, when the reflective panel of the antenna is deployed on the ground, the deformation of the reflective panel due to gravity is reduced by offsetting the gravity acting on the reflective panel to simulate the zero-gravity condition. should be minimized

The technology underlying the present invention is disclosed in the following patent documents.

US 10-1759620 B1

The present invention provides an antenna deployment testing apparatus and method capable of stably supporting a deployed portion of an antenna.

An antenna deployment test apparatus according to an embodiment of the present invention is an antenna deployment test apparatus for testing a deployment operation of a reflective panel of an antenna, comprising: a seating part on which the antenna is seated; a wire connected to the reflective panel spaced apart from the feeder of the antenna; It includes a; is formed to adjust the length by winding or unwinding the wire, is connected to the wire, and is mounted on the strut of the antenna between the feeder and the reflective panel.

An antenna deployment test apparatus according to an embodiment of the present invention is an antenna deployment test apparatus for testing a deployment operation of a reflective panel of an antenna, comprising: a seating part on which the antenna is seated; a plurality of wires respectively connected to a plurality of reflective panels arranged around the feeder of the antenna; It includes; is formed to adjust the length of the wire wound or unwound, is connected to the plurality of wires, is disposed between the feeder and the plurality of reflective panels, and is arranged around the feeder.

The plurality of reflective panels and the plurality of operation units may be arranged radially, respectively, and the operation unit may be detachably mounted to a strut of the antenna on which the feeder is supported.

The plurality of wires may be respectively connected to the plurality of operation units so that the plurality of operation units and the plurality of reflective panels are matched one-to-one.

a control unit connected to the plurality of operation units and configured to control the operation so that the plurality of operation units can be operated differently.

a control unit connected to the plurality of operation units, dividing the plurality of operation units into a plurality of groups, and controlling the operation so that the plurality of groups operate differently.

One side of the wire is wound and supported by the operating unit, the other side is fixed to the end of the reflective panel, and one side wound on the operating unit is unwound and the length of the reflective panel is adjusted in a direction in which the end of the reflective panel moves, A portion other than one side may be placed on a trajectory in which an end of the reflective panel moves.

The operation unit may include: a wire drum formed to wind or unwind the wire on an outer circumferential surface; It may include; a motor connected to the wire drum.

The rotating shaft of the wire drum may be formed to extend in a horizontal direction or a vertical direction.

The operation unit may include a block on which the wire drum is seated; and a rail on which the block is movably supported in a horizontal direction.

It may include; a test unit for testing the reliability of the deployment operation of the reflective panel.

An antenna deployment test method according to an embodiment of the present invention includes the steps of seating an antenna equipped with a reflective panel in a seating portion of a test apparatus; a process of mounting an operation part of the test apparatus on a strut supported by a feeder of the antenna, and connecting a wire wound on the operation part to the reflective panel; deploying the reflective panel away from the antenna feeder; and releasing the wire from the feeder in a direction toward the reflective panel while deploying the reflective panel to support the reflective panel to offset gravity applied to the reflective panel.

An antenna deployment test method according to an embodiment of the present invention includes the steps of seating an antenna provided with a plurality of reflective panels on a seating part of a test apparatus; disposing a plurality of actuating parts of the test apparatus around the feeder of the antenna, and respectively connecting wires wound on the plurality of actuating parts to the plurality of reflective panels; deploying the plurality of reflective panels to be radially spread around the feeder of the antenna; and releasing each of the plurality of wires corresponding to each other from the upper side of the plurality of reflective panels while the reflective panel is deployed.

The process of unwinding each of the plurality of wires may include: individually controlling the plurality of operation units to individually unwind the plurality of wires; and supporting each of the plurality of reflective panels with the plurality of wires to offset gravity applied to the reflective panels.

The process of unwinding the plurality of wires individually may include the process of selecting a portion of the plurality of wires and unwinding at a different speed than the rest; and a process of maintaining or changing the selected wire while unwinding the plurality of wires.

The process of offsetting the gravity applied to the reflective panel includes the process of releasing the wire obliquely to follow the trajectory of the reflective panel unfolding and matching the direction of movement of the wire with the direction of tension acting on the wire; can do.

In the process of canceling the gravity applied to the reflective panel, the movement of the end of the reflective panel to which the wire is fastened is tracked, and the horizontal position of the supporting point supporting the wire is matched with the position of the end of the reflective panel. , a process of preventing an external force from being applied to the reflective panel in a horizontal direction;

and testing the reliability of the deployment operation of the reflective panel.

According to an embodiment of the present invention, an antenna deployment test can be performed by deploying the antenna's reflective panel on the ground and testing the deployment operation of the antenna's reflective panel before the antenna is mounted on an artificial satellite and launched into the air. In addition, while the reflective panel is deployed, the reflective panel can be stably supported by unwinding the wire from the feeder toward the reflective panel. From this, it is possible to cancel the gravitational force acting on the reflective panel, suppress or prevent the reflective panel from being deformed by its own weight due to the earth's gravity, and the unfolding operation of the reflective panel can be precisely tested.

1 is a schematic diagram showing a state in which an antenna is coupled to an antenna deployment test apparatus according to an embodiment of the present invention.
2 is a schematic diagram showing a state of testing the deployment operation of the reflective panel of the antenna with the antenna deployment test apparatus according to an embodiment of the present invention.
3 is a side cross-sectional view of an operation unit according to an embodiment of the present invention.
4 is a schematic diagram of an operation unit according to a modified example of the present invention.

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, and will be implemented in various different forms. Only the embodiments of the present invention are provided to complete the disclosure of the present invention, and to completely inform those of ordinary skill in the art the scope of the invention. In order to explain the embodiment of the present invention, the drawings may be exaggerated, parts irrelevant to the description may be omitted from the drawings, and the same reference numerals in the drawings refer to the same elements.

An antenna deployment test apparatus and method according to an embodiment of the present invention can be applied as an antenna deployment test apparatus and method for testing whether a reflective panel deployment operation is smoothly performed while a reflective panel of an antenna is deployed on the ground.

Of course, the antenna deployment test apparatus and method according to an embodiment of the present invention can be variously utilized as a deployment test apparatus and method for testing whether the deployment operation is smoothly performed by deploying various structures having a folded portion.

Hereinafter, an embodiment of the present invention will be described in detail with reference to an apparatus for testing the deployment operation of the reflective panel of the antenna.

1 is a schematic diagram showing a state in which an antenna is coupled to an antenna deployment test apparatus according to an embodiment of the present invention. 2 is a schematic diagram showing a state of testing the deployment operation of the reflective panel of the antenna with the antenna deployment test apparatus according to an embodiment of the present invention.

First, an antenna 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2 .

The antenna 100 according to an embodiment of the present invention is an antenna 100 that can be mounted on an artificial satellite (not shown), and includes a base frame 110 , a reflective panel 120 , a bracket 130 , a strut 140 and A feeder 150 may be included. Of course, the antenna 100 may be an antenna 100 mounted on various platforms (not shown) on the ground and operated on the ground.

A lower portion of the base frame 110 may be mounted on the body of the satellite, and an upper portion may support the reflective panel 120 and the strut 140 . The shape of the base frame 110 may correspond to the arrangement structure of the reflective panel 120 . For example, the base frame 110 may be formed in a ring shape to correspond to a structure in which a plurality of reflective panels 120 are provided and arranged in a radial direction. A predetermined deployment device (not shown) may be provided on the base frame 110 . The deployment device may be connected to the lower portion of the reflective panel 120 , may be deployed while rotating the reflective panel 120 , and may elastically support the reflective panel 120 . The deployment device may include, for example, various parts such as links, rollers, beams, shafts, springs, and gears, and the coupling structure of these parts may vary. The base frame 110 may be referred to as a pedestal.

The reflective panel 120 may be a shell-shaped foldable reflective panel 120 . A plurality of reflective panels 120 may be provided. The plurality of reflective panels 120 may be supported on an upper portion of the base frame 110 , and may be radially arranged along the circumference of the base frame 110 .

The lower portion of the reflective panel 120 may be rotatably supported by the deployment device of the base frame 110 . The reflective panel 120 surrounds the outside of the strut 140 by standing at a predetermined angle close to or perpendicular to the base frame 110 in the folded state, for example, a cylinder or a predetermined shape close to the cylinder (Fig. see 1). In addition, the reflective panel 120 can form, for example, a shape similar to that of a parabolic antenna reflector by gently laying down while drawing a predetermined parabola in a direction from the center of the base frame 110 to the edge in a radially unfolded state (FIG. see 2). Meanwhile, the reflective panel 120 may be referred to as a sub-reflective panel.

Here, the movement of the reflective panel 120 such that the reflective panel 120 is in a state in which it is gently laid on the base frame 110 while being spread around the strut 140 from the standing and folded state of the reflective panel 120 . is called unfolding.

The bracket 130 may be formed to protrude above the reflective panel 120 . The shape of the bracket 130 may vary. A predetermined hole (not shown) may be provided in the bracket 130 . The wire 300 of the antenna deployment test apparatus may be bound to the hole.

Also, the bracket 130 may fix the reflective panel 120 to the strut 140 when the reflective panel 120 is in a folded state. In addition, the fixing force of the bracket 130 with the strut 140 may be released when testing the deployment operation of the reflective panel 120 .

Meanwhile, in a state in which the reflective panel 120 is folded, a fixing device (not shown) may be provided at a predetermined position of the strut 140 corresponding to the height of the bracket 130 . The bracket 130 may come into contact with the fixing device in the folded state of the reflective panel 120 and may be fixed by the fixing device, thereby stably maintaining the reflective panel 120 in the folded state. Such a fixing device may include an electromagnet, and the magnetic force of the electromagnet may be used as a fixing force for fixing the bracket 130 . Of course, there may be various ways of fixing the bracket 13 to the fixing device. Meanwhile, when the reflective panel 12 is deployed in a radial form, the fixing force may be released by stopping the operation of the fixing device.

The strut 140 may be supported on the base frame 110 inside the plurality of reflective panels 120 . The strut 140 serves to position the feeder 150 at a focal position of radio waves formed by the reflective panel 120 when the plurality of reflective panels 120 are deployed.

The strut 140 may be formed to extend in the vertical direction. The strut 140 may include a lower structure 141 , an intermediate reinforcement 142 , an intermediate structure 143 , an upper reinforcement 144 , and an upper structure 145 . The lower structure 141, the intermediate structure 143, and the upper structure 145 may be, for example, a truss structure. The intermediate reinforcement 142 may have, for example, a square ring structure, and the upper reinforcement 144 may have, for example, a circular ring structure. A horizontal width of the intermediate reinforcing body 143 may be greater than a horizontal width of the upper reinforcing body 144 . The lower structure 141 , the intermediate reinforcement 142 , the intermediate structure 143 , the upper reinforcement 144 , and the upper structure 145 may be mounted on the upper portion of the base frame 110 in this order.

The upper reinforcement body 144 may be positioned at a height of an end of the reflective panel 120 when the reflective panel 120 is in a folded state. In a state in which the reflective panel 120 is folded, the upper reinforcement 144 and the bracket 130 formed at the end of the reflective panel 120 may be disposed to face each other in a horizontal direction.

Accordingly, the above-described fixing device (not shown) may be provided to fix the bracket 130 to the outer circumferential surface of the upper reinforcing body 144 . In this case, the fixing devices may be arranged in a radial form along the outer circumferential surface of the upper reinforcing body 144 .

The feeder 150 may be supported on the upper structure 145 . The feeder 150 may include a reflector 151 and a feed horn 152 . The reflector 151 may be referred to as a main reflector. The reflecting plate 151 may be formed to extend in a horizontal direction and may have a disk shape with a center concave downward, and a shape of a vertical cross-section thereof may be a predetermined parabolic shape.

A horizontal width of the reflector 151 may be smaller than a horizontal width of the upper reinforcement 144 . Accordingly, the reflective plate 151 may be supported by the upper structure 145 above the center of the upper reinforcement 144 . The feed horn 152 may be supported at the center of the reflector 151 . The reflection plate 151 may focus the propagation signal reflected from the reflection panel 120 to the feed horn 152 . In addition, the feed horn 152 may receive a radio signal and transmit it to an artificial satellite.

Hereinafter, an antenna deployment test apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 .

The antenna deployment test apparatus may be built inside a predetermined test building (not shown) in which various tests for the artificial satellite are performed before launching the artificial satellite (not shown).

The antenna deployment test apparatus is an antenna deployment test apparatus for testing the deployment operation of the reflective panel 120 of the antenna 100 , and includes a seating part 200 on which the antenna 100 is seated, and a feeder 150 of the antenna 100 . The wire 300 connected to the reflective panel 120 disposed spaced apart from the wire 300, and the wire 300 are wound or unwound to adjust the length, connected to the wire 300, and connected to the feeder 150 and the reflective panel Between 120 , it includes an operation unit 400 mounted to the strut 140 of the antenna 100 .

In addition, the antenna deployment test apparatus may include a control unit 500 for controlling the operation of the operation unit (400). In addition, the antenna deployment test apparatus may include a test unit 600 for testing reliability of the deployment operation of the reflective panel 120 .

On the other hand, a plurality of reflective panels 120 may be arranged around the feeder 150 of the antenna 100, and accordingly, a plurality of wires 300 are provided, and a plurality of wires 300 are provided with a plurality of reflective panels ( 120) can be connected to each other. Of course, the antenna 100 may have a structure including one reflective panel.

Hereinafter, an embodiment of the present invention will be described based on a case in which the number of reflective panels 120 is plural. Of course, even when the number of reflective panels 120 is one, the structure to be described later of the antenna deployment test apparatus according to an embodiment of the present invention may be applied in the same or similar manner.

The seating unit 200 is formed from a bogie 210 having a predetermined upper surface so that the antenna 100 can be seated, a plurality of wheels 220 mounted on the lower portion of the bogie 210, and a plurality of wheels 220 . It may include a plurality of lifts 230 spaced apart and mounted on the lower portion of the bogie 210 .

The bogie 210 may seat the base frame 110 of the antenna 100 on the upper surface. The shape of the bogie 210 may vary. For example, the bogie 210 may have a square plate shape. The plurality of wheels 220 may be mounted at a plurality of positions on the edge of the lower surface of the bogie 210 , and may drive the bogie 210 . The bogie 210 may be moved to a desired position in the test building by the plurality of wheels 220 .

The plurality of lifts 230 may be mounted at a plurality of positions on the edge of the lower surface of the bogie 210 . The plurality of lifts 230 may be stretched and contracted in the vertical direction, and the plurality of wheels 220 may be spaced apart from the floor of the test building by lifting the bogie 210 to a predetermined height from the floor of the test building. The position of the bogie 210 can be fixed at a desired position inside the test building by the plurality of lifts 230 .

The plurality of wires 300 may be respectively connected to the plurality of operation units 400 such that the plurality of operation units 400 and the plurality of reflective panels 120 are matched one-to-one. At this time, each wire 300 may be supported by being wound on one side of the corresponding operation unit 400 , and the other side is bound to and fixed to the bracket 130 provided at the end of the corresponding reflective panel 120 . can One side of the wire 300 wound around the operation unit 400 is unwound, and the length of the wire 300 may be adjusted in a direction in which the end of the reflective panel 120 moves. The wire 300 may be disposed in a radial shape with the feeder 150 as a center, and may be disposed to be inclined downwardly from the feeder 150 toward the reflective panel 120 .

Due to the above-described structure, the remaining portion except for one side of the wire 300 may be placed on the trajectory of the movement of the end of the reflective panel 120 . In this case, it is possible to match the direction of movement of the wire 300 and the direction of the tension acting on the wire 300, and it is possible to prevent unnecessary vibration from being applied to the reflective panel 120 connected to the wire 300, From this, while the reflective panel 120 is deployed, the movement of the reflective panel 120 may be stably supported.

On the other hand, the wire 300 may be provided with a predetermined binding device (not shown) at the end of the other side. When testing the deployment operation of the reflective panel 120 of the antenna 100, a predetermined binding device (not shown) may be bound to the bracket 130 to connect the other side of the wire 300 to the reflective panel 120 . have. When the test is finished, by separating the binding device from the bracket 130 , the wire 300 can be easily separated from the reflective panel 120 . The binding device may include, for example, a hook device having a structure capable of locking and opening. Of course, the structure of the binding device may vary.

The wire 300 can support the end of the reflective panel 120 with a predetermined force by pulling the bracket 130 using tension, and by offsetting the gravity acting on the reflective panel 120 to simulate a zero gravity condition. Deformation of the reflective panel due to gravity can be minimized.

3 is a side cross-sectional view of an operation unit according to an embodiment of the present invention.

Hereinafter, the operation unit 400 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 .

The operation unit 400 may be formed to be able to adjust the length by winding or unwinding the wire 300 . A plurality of operation units 400 may be provided to correspond to the number of wires 300 . For example, the number of operation units 400 and the number of wires 300 may be the same. Accordingly, the plurality of operation units 400 may be respectively connected to the plurality of wires 300 .

The operation unit 400 may be disposed between the feeder 150 and the plurality of reflective panels 120 , and may be arranged around the feeder 120 . In detail, the operation unit 400 may be detachably mounted to the upper reinforcement body 144 of the strut 140 of the antenna 100 . In more detail, the plurality of operation parts 400 may be arranged along the circumference of the upper surface of the upper reinforcement body 144 . In this case, the plurality of operation units 400 may be radially arranged.

Meanwhile, when the operation unit 400 is detachably formed on the upper reinforcement body 144 to test the deployment operation of the reflective panel 120 of the antenna 100 , the operation unit 400 is mounted on the antenna 100 . By doing so, the operating unit 400 is easily coupled to the antenna 100 , and when the test is completed, the operating unit 400 can be easily separated from the antenna 100 by detaching it from the upper reinforcing body 144 .

The operation unit 400 may include a wire drum 410 formed to wind or unwind the wire 300 on the outer circumferential surface, and a motor 420 connected to the wire drum 410 . In this case, the motor 420 may have a structure built in the wire drum 410 . With this structure, the plurality of operation units 400 may be smoothly disposed in a narrow area of the upper reinforcement body 144 . Of course, the motor 420 may be an external motor.

Hereinafter, the structure of the operation unit 400 will be described in more detail. The operation unit 400 may include a wire drum 410 , a motor 420 , a flange 430 , a support 440 , a block 450 , and a bearing 460 .

The wire drum 410 may be supported by winding the wire 300 on the outer circumferential surface. The wire drum 410 may be formed in a hollow structure so that the motor 420 may be disposed therein. The motor 420 may be disposed inside the wire drum 410 . A first bearing 461 may be mounted on the outer peripheral surface of the motor 420 , and the wire drum 410 may be supported on the first bearing 461 . The output end of the motor 420 is pinched and coupled to the first protrusion provided on the inner circumferential surface of the wire drum 410, so that the rotation of the output end of the motor 420 is transmitted to the wire drum 410 so that the wire drum 410 can be rotated. have.

The flange 430 may be formed to protrude from both edges of the outer circumferential surface of the wire drum 410 . By disposing the wire 300 on the inside of the flange 430 , it is possible to prevent the wire 300 from falling off from the outer circumferential surface of the wire drum 410 .

A plurality of supports 440 may be provided to be spaced apart from both sides of the motor 420 . Each of the supports 440 may have a lower portion extending in the vertical direction, may be mounted on a block 450 , and may have an upper portion refracted toward the motor 420 to be connected to the motor 420 .

At this time, among the plurality of supports 440 , the first support 441 positioned on the opposite side of the output end of the motor 420 is mounted on the body of the motor 420 , and when the output terminal of the motor 420 rotates, the motor 420 ) can be stably restrained.

A second bearing 462 may be provided on the bent upper portion of the first support 441 , and a second protrusion provided on the inner circumferential surface of the wire drum 410 may be rotatably supported by the second bearing 462 . .

Among the plurality of supports 440 , the second support 442 connected to the output terminal of the motor 420 may rotatably support the wire drum 410 and the output terminal of the motor 420 . That is, a step may be formed at an end of the bent upper portion of the second support 442 . A third bearing 463 is provided on the outer circumferential surface of the first step close to the lower portion of the second support 442, and the fourth bearing 464 is provided on the outer circumferential surface of the second step protruding from the first step toward the motor 420 side. can be provided.

The third bearing 463 may rotatably support the step of the wire drum 410 formed in the portion where the first protrusion of the wire drum 410 is located. Since the fourth bearing 464 is inserted into the support hole of the output end of the motor 420 , the load of the motor 420 may be supported while the shaft rotation of the output end may be freely supported.

The block 450 may support the support 440 on the upper surface, and the lower surface may be detachably mounted to the upper reinforcement 144 of the strut 140 . Here, a method for detachably mounting the block 450 on the upper surface of the upper reinforcement 144 may be various. For example, the block 450 may be mounted on the upper surface of the upper reinforcing body 144 by using a method such as screw coupling, fitting coupling, clamping, magnetic force, or the like. Here, a predetermined mounting groove (not shown) or a mounting member (not shown) may be provided on the upper surface of the upper reinforcement body 144 to mount the block 450 .

On the other hand, looking at the structure of the above-described operation unit 400, the rotation axis of the wire drum 410 may be formed to extend in the horizontal direction. However, the operation unit 400 may be provided in a structure in which the rotation shaft of the wire drum 410 extends in the vertical direction.

The control unit 500 is connected to the plurality of operation units 400 , and may individually control the operation of the plurality of operation units 400 . Accordingly, the control unit 500 may control the plurality of operation units 400 to operate identically, and may control at least some of the plurality of operation units 400 to operate differently. In addition, the control unit 500 may divide the plurality of operation units 400 into a plurality of groups, and control at least some of the plurality of groups to operate differently.

Here, the control unit 500 may rotate the wire drum 410 by controlling the operation of the motor 410 of the operation unit 400 , and may also control the rotational speed of the wire drum 410 . From this, the control unit 500 may increase the length of the unwound portion of the wire 300, and may also adjust the speed at which the length of the unwound portion of the wire 300 increases. In this way, the control unit 500 may control the operation of the operation unit 400 to increase the length of the unwinding portion of the wire 300 and adjust the increase rate thereof.

Accordingly, the controller 500 may adjust the degree to which the wire 30 cancels the self-weight of the reflective panel 120 while the reflective panel 120 connected to the wire 300 is deployed, and the reflection therefrom It is possible to smoothly simulate a zero-gravity environment on the panel 120 .

On the other hand, meaning that the control unit 500 can individually control the operation of the plurality of operation units 400 , the control unit 500 controls the operation of the operation unit 400 to unwind the plurality of wires 300 . During the control, if necessary, it means that the unwinding speed of the selected predetermined wire 300 can be changed, or the selected predetermined wire 300 can be wound up for a predetermined time. Accordingly, in the test for operating the deployment of the reflective panel 120 , various conditions for the deployment of the reflective panel 120 may be given, and thus, a precise test is possible.

The test unit 600 may be formed to test the reliability of the deployment operation of the reflective panel 120 using the location information. For example, the test unit 600 measures the position information of the reflective panel 120 by using at least one of an optical signal and an electromagnetic signal, and compares the measurement result with a reference position input in advance for the deployment operation of the reflective panel 120 . reliability can be tested.

The test unit 600 includes a plurality of pads (not shown) that can be attached to a plurality of positions of each of the feeder 150 and the plurality of reflective panels 120 to reflect at least one of an optical signal and an electromagnetic signal, a plurality of A signal output device (not shown) capable of outputting at least one of an optical signal and an electromagnetic signal to the pads may be included.

And the test unit 600 is a signal tracker (not shown) capable of tracking the reflected signal reflected from the plurality of pads, the plurality of reflective panels 120 for the feeder 150 by analyzing the reflected signal tracked by the signal tracker. Measuring the relative position information of , and comparing the measured results with reference positions according to the deployment time for each of the plurality of reflective panels 120 input in advance, the calculated results are the respective reference positions within a predetermined error range. It may include a signal processor (not shown) that matches whether or not it matches.

The test unit 600 may measure relative position information of the plurality of reflective panels 120 with respect to a predetermined focal position of the feed horn 152 . Also, the test unit 600 may select a predetermined position of each reflective panel 120 as a representative position and measure relative position information of the representative positions of the plurality of reflective panels 120 . Of course, the test unit 600 may measure relative position information by selecting a plurality of representative positions for each reflective panel 120 . Meanwhile, the reference position may be acquired in the design stage of the antenna 100 . In addition, the reference position may be corrected in consideration of the bending and deformation of the reflective panel 120 that may occur minutely even during the simulation of the zero-gravity state.

4 is a schematic diagram of an operation unit according to a modified example of the present invention.

Referring to FIG. 4 , the operation unit 400 according to a modified example of the present invention may further include a rail 470 for movably supporting the block 450 on which the wire drum 410 is seated in a horizontal direction. The rail 470 may be detachably installed on the upper reinforcing body 144 of the strut 140 of the antenna 100 and may be formed to extend on the upper surface of the upper reinforcing body 144 in the circumferential direction of the feeder 150 . can In addition, the block 450 may be provided with a driver therein, and may travel along the rail 470 using the driver.

For example, as the wire 300 is unwound from the outer circumferential surface of the wire drum 410 , the location of the unwound portion of the wire 300 may change in the direction in which the wire drum 410 extends on the outer circumferential surface of the wire drum 410 . Therefore, by compensating for the change in the position of the wire 300 and the block 450 moves in the opposite direction to the direction in which the loose portion of the wire 300 moves, the wire 300 moves left and right by the unwinding of the wire 300 . can be prevented from oscillating.

In addition, depending on the structure in which the reflective panel 120 and the deployment device (not shown) are connected, the position of the end of the reflective panel 120 may be changed in the horizontal direction as the reflective panel 120 is deployed. At this time, by tracking the horizontal movement of the end of the reflective panel 120 and moving the block 450 in the opposite direction by compensating for the tracked movement, it is possible to prevent the wire 300 from being twisted in the left and right directions. have.

Hereinafter, an antenna deployment test method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4 .

In the antenna deployment test method according to an embodiment of the present invention, the process of seating the antenna 100 provided with the reflective panel 120 on the seating part 200 of the test apparatus, and the feeder 150 of the antenna 100 is supported. The process of mounting the operation part 400 of the test apparatus on the strut 140 and connecting the wire 300 wound around the operation part 400 with the reflective panel 120, from the feeder 120 of the antenna 100 During the process of deploying the reflective panel 120 away from the reflective panel 120 , the wire 300 is released from the feeder 150 in the direction toward the reflective panel 120 to support the reflective panel 120 . to offset the gravity applied to the reflective panel 120 .

In addition, the antenna deployment test method may include a process of testing the reliability of the deployment operation of the reflective panel 120 using the location information. For example, the process of testing the reliability of the deployment operation of the reflective panel 120 using location information is performed after connecting the wire 300 and the reflective panel 120 to the reflective panel 120 for the feeder 150 . measuring the relative position of , and testing the reliability of the deployment operation of the reflective panel 120 using the measurement result. Here, the reliability of the deployment operation of the reflective panel 120 is determined by comparing the relative position of the reflective panel 120 for each deployment time predicted at the time of designing the antenna 100 and the actual relative position for each deployment time of the reflective panel 120 . If the difference is within a predetermined tolerance, it may be determined as reliable, otherwise it may be determined as unreliable.

Meanwhile, the antenna 100 used in the antenna deployment test may be an antenna 100 including a plurality of reflective panels 120 . Hereinafter, an embodiment of the present invention will be described based on a case in which the number of the reflective panels 120 of the antenna 100 is plural. Of course, even when the number of reflective panels 120 is one, the process described later of the antenna deployment test method according to an embodiment of the present invention may be applied in the same or similar manner.

1 to 4 , the antenna deployment test method according to an embodiment of the present invention includes a process of seating the antenna 100 provided with a plurality of reflective panels 120 on the seating part 200 of the test apparatus, A plurality of operation units 400 of the test apparatus are arranged around the feeder 150 of the antenna 100 , and the wires 300 wound around the plurality of operation units 400 are respectively connected to the plurality of reflective panels 120 , respectively. process, the process of deploying the plurality of reflective panels 120 to be radially spread around the feeder 150 of the antenna 100 , the process of deploying the reflective panel 120 , the upper side of the plurality of reflective panels 120 . Including the process of unwinding each of a plurality of wires 300 corresponding to each.

In addition, in the antenna deployment test method, a plurality of reflections on the feeder 150 are performed during the deployment of the plurality of reflective panels 120 and after a predetermined reference time has elapsed after the plurality of reflective panels 120 are deployed. The method may include measuring the relative position of the panel 120 and testing the reliability of the deployment operation of the reflective panel 120 using the measurement result.

First, the antenna 100 provided with the plurality of reflective panels 120 is seated on the mounting unit 200 of the test apparatus.

After the assembly of the base frame 110 , the plurality of reflective panels 120 , the bracket 130 , the strut 140 and the feeder 150 is completed, the antenna 100 is a state in which the plurality of reflective panels 120 are folded. and can be transported to a predetermined test building for testing the deployment operation of the reflective panel. Thereafter, the base frame 110 of the antenna 100 may be seated on the upper surface of the bogie 210 of the seating part 200 of the antenna deployment test apparatus provided in the test building.

Thereafter, a plurality of operation units 400 of the test apparatus are disposed around the feeder 150 of the antenna 100 , and the wires 300 wound around the plurality of operation units 400 are respectively wound with a plurality of reflective panels 120 and connect each.

The plurality of operation units 400 may be arranged along the circumference of the feeder 150 and mounted on the upper surface of the upper reinforcement 144 of the strut 140 . Then, the wire 300 wound around each operation unit 400 is connected to the bracket 130 of the corresponding reflective panel 120 . Here, corresponding means radially facing each other.

Thereafter, the plurality of reflective panels 120 are deployed so as to be radially spread around the feeder 150 of the antenna 100 .

By releasing the operation of the fixing device provided in the upper reinforcement body 144, the bracket 130 fixed to the fixing device is separated from the fixing device, and the reflective panel 120 is operated by operating the deployment device built in the base frame 110. The reflective panel 120 may be spread out around the strut 140 by rotating the upper part in a direction away from the feeder 150 based on the lower part of the .

In this process, the plurality of reflective panels 120 may be individually deployed by controlling the deployment device. In this case, the plurality of reflective panels 120 may be deployed at the same speed.

In addition, a portion of the plurality of reflective panels 120 may be selected and deployed at a different speed than the rest. In this case, while the plurality of reflective panels 120 are deployed, a portion of the plurality of reflective panels 120 is selected and deployed at a different speed than the rest, while maintaining or changing the selected reflective panel.

While the reflective panel 120 is deployed, each of the plurality of wires 300 corresponding to each of the plurality of reflective panels 120 is released from the upper side thereof.

The control unit 500 controls the operation of the motor 420 of the operation unit 400 to rotate the wire drum 410 connected to the motor 420 to loosen the wires 300 wound around the wire drum 410 and supported, respectively. can get off

In this case, the plurality of operation units 400 may be individually controlled by the control unit 500 to release the plurality of wires 300 individually. Here, the plurality of wires 300 may be unwound at the same speed, or a portion of the plurality of wires 300 may be selected to unwind at a different speed than the rest, and the wire selected while unwinding the plurality of wires 300 can be maintained or changed.

For example, when the deployment device (not shown) deploys the plurality of reflective panels 120 at the same speed, the plurality of wires 300 may be released at the same speed.

In addition, when a portion of the plurality of reflective panels 120 is selected and deployed at a different speed from the rest, a wire connected to the reflective panel deployed at a different speed may be selected and released at a different speed than the rest. In this case, the selected reflective panel and wire may be changed.

As such, while releasing each of the plurality of wires 300 , by supporting each of the plurality of reflective panels 120 with the plurality of wires 300 , it is possible to offset the gravity applied to the reflective panel 120 , and simulate a zero gravity environment. can give

On the other hand, in the process of canceling the gravity applied to the reflective panel 120 using the wire 300, the wire 300 is inclinedly released to follow the trajectory of the development of the end of the reflective panel 120, and the wire 300 The direction of movement and the direction of tension acting on the wire 300 can be matched. Accordingly, it is possible to prevent unnecessary vibration from being applied to the reflective panel 120 connected to the wire 300 , and from this, it is possible to stably support the movement of the reflective panel 120 while the reflective panel 120 is deployed. .

In addition, by tracking the horizontal movement of the end of the reflective panel 120 to which the wire 300 is fastened, the wire drum 410 moves the block 450 supported by the wire drum 410 left and right in response to the tracked movement, the wire drum The horizontal position of the support point for supporting the wire 300 on the outer peripheral surface of the 410 may match the end position of the reflective panel 120 . Accordingly, it is possible to prevent an external force from being applied to the reflective panel 120 in a horizontal direction.

Of course, as the wire 300 is released from the outer circumferential surface of the wire drum 410, the support point for supporting the wire 300 on the outer circumferential surface of the wire drum 410 may move, and the block 450 is moved in response to this movement. By doing this, it is also possible to prevent the wire 300 from swinging left and right due to the loosening of the wire 300 .

During the deployment of the plurality of reflective panels 120 and after a predetermined reference time has elapsed after the plurality of reflective panels 120 are deployed, the relative positions of the plurality of reflective panels 120 with respect to the feeder 150 are determined. measurement, and the reliability of the deployment operation of the reflective panel 120 is tested using the measurement result.

That is, the test unit 600 measures the relative position information of the plurality of reflective panels 120 with respect to the feeder 150 , and the measured results are inputted in advance and the reference position according to the deployment time for each of the plurality of reflective panels 120 . Prepares whether the calculated results are consistent with the corresponding reference positions within a predetermined error range, and if the difference is within a predetermined tolerance, it is judged as reliable; otherwise, it is judged as unreliable. can do.

The above embodiments of the present invention are intended to illustrate the present invention, not to limit the present invention. It should be noted that the configurations and methods disclosed in the above embodiments of the present invention may be combined and modified in various forms by combining or intersecting with each other, and modifications thereof may also be considered as the scope of the present invention. That is, the present invention will be embodied in a variety of different forms within the scope of the claims and equivalents thereof, and those skilled in the art to which the present invention pertains can implement various embodiments within the scope of the technical spirit of the present invention. will be able to understand

100: antenna 110: base frame
120: reflective panel 130: bracket
140: strut 144: upper reinforcement body
150: feeder 200: seating part
300: wire 400: operation part
410: wire drum 420: motor
500: control unit 600: test unit

Claims (18)

An antenna deployment test device for testing deployment operation of a reflective panel of an antenna, comprising:
a seating unit on which the antenna is mounted;
a wire connected to the reflective panel spaced apart from the feeder of the antenna;
Including; is formed to adjust the length by winding or unwinding the wire, is connected to the wire, and is mounted on the strut of the antenna between the feeder and the reflective panel;
One side of the wire is wound and supported by the operating unit, the other side is fixed to the end of the reflective panel, and one side wound on the operating unit is unwound and the length is adjusted in the direction in which the end of the reflective panel moves,
Antenna deployment test apparatus that can be placed on the trajectory in which the end of the reflective panel moves except for one side of the wire. An antenna deployment test device for testing deployment operation of a reflective panel of an antenna, comprising:
a seating unit on which the antenna is mounted;
a plurality of wires respectively connected to a plurality of reflective panels arranged around the feeder of the antenna;
It is formed to be able to adjust the length by winding or unwinding the wire, is connected to the plurality of wires, is disposed between the feeder and the plurality of reflective panels, and includes a plurality of operation parts arranged around the feeder;
One side of the wire is wound and supported by the operating unit, the other side is fixed to the end of the reflective panel, and one side wound on the operating unit is unwound and the length is adjusted in the direction in which the end of the reflective panel moves,
Antenna deployment test apparatus that can be placed on the trajectory in which the end of the reflective panel moves except for one side of the wire. 3. The method according to claim 2,
The plurality of reflective panels and the plurality of operation parts are respectively radially arranged,
The antenna deployment test apparatus is detachably mounted to the strut of the antenna on which the feeder is supported. 3. The method according to claim 2,
Antenna deployment test apparatus in which the plurality of wires are respectively connected to the plurality of operation parts so that the plurality of operation parts and the plurality of reflective panels are matched one-to-one. 3. The method according to claim 2,
Antenna deployment test apparatus comprising a; connected to the plurality of operation parts, and controlling the operation so that the plurality of operation parts can be operated differently. 3. The method according to claim 2,
A control unit connected to the plurality of operation parts, dividing the plurality of operation parts into a plurality of groups, and controlling the operation so that the plurality of groups operate differently. delete 7. The method according to any one of claims 1 to 6,
The operation unit,
a wire drum formed to wind or unwind the wire on the outer circumferential surface;
Antenna deployment testing apparatus comprising a; motor connected to the wire drum. 9. The method of claim 8,
Antenna deployment test apparatus in which the axis of rotation of the wire drum extends in a horizontal direction or a vertical direction. 9. The method of claim 8,
The operation unit,
a block on which the wire drum is seated;
Antenna deployment testing apparatus comprising a; rail on which the block is movably supported in the horizontal direction. 7. The method according to any one of claims 1 to 6,
Antenna deployment testing apparatus comprising a; a test unit for testing the reliability of the deployment operation of the reflective panel. The process of seating the antenna provided with the reflective panel on the seating part of the test apparatus;
a process of mounting an operation part of the test apparatus on a strut supported by a feeder of the antenna, and connecting a wire wound on the operation part to the reflective panel;
deploying the reflective panel away from the antenna feeder;
During deployment of the reflective panel, unwinding the wire from the feeder toward the reflective panel and supporting the reflective panel to offset the gravity applied to the reflective panel;
The process of canceling the gravity applied to the reflective panel is,
Antenna deployment test method including; releasing the wire obliquely so as to follow the trajectory of the reflective panel deployment and matching the moving direction of the wire and the direction of tension acting on the wire. A process of seating the antenna provided with a plurality of reflective panels on a seating part of the test apparatus;
disposing a plurality of actuating parts of the test apparatus around the feeder of the antenna, and respectively connecting wires wound on the plurality of actuating parts to the plurality of reflective panels;
deploying the plurality of reflective panels to be radially spread around the feeder of the antenna;
During deployment of the reflective panel, the process of unwinding each of the plurality of wires corresponding to each other from the upper side of the plurality of reflective panels;
The process of unwinding each of the plurality of wires is,
individually controlling the plurality of operation units to individually unwind the plurality of wires;
Antenna deployment test method comprising; supporting each of the plurality of reflective panels with the plurality of wires to offset gravity applied to the reflective panels. delete 14. The method of claim 13,
The process of unwinding the plurality of wires individually is,
a process of selecting a portion of the plurality of wires and unwinding them at a different speed than the rest; and
Antenna deployment test method comprising; maintaining or changing the selected wire while unwinding the plurality of wires. 14. The method of claim 13,
The process of canceling the gravity applied to the reflective panel is,
Antenna deployment test method including; releasing the wire obliquely so as to follow the trajectory of the reflective panel deployment and matching the moving direction of the wire and the direction of tension acting on the wire. 17. The method of claim 12 or 16,
The process of canceling the gravity applied to the reflective panel is,
By tracking the movement of the end of the reflective panel to which the wire is fastened, the horizontal position of the supporting point for supporting the wire is matched with the position of the end of the reflective panel, and external force is applied to the reflective panel in the horizontal direction Antenna deployment test method, including the process of preventing; 17. The method of any one of claims 12, 13, 15 and 16,
Antenna deployment test method comprising a; the process of testing the reliability of the deployment operation of the reflective panel.

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