CN111342195A - High-order big array face antenna every single move control system - Google Patents
High-order big array face antenna every single move control system Download PDFInfo
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- CN111342195A CN111342195A CN201911252394.9A CN201911252394A CN111342195A CN 111342195 A CN111342195 A CN 111342195A CN 201911252394 A CN201911252394 A CN 201911252394A CN 111342195 A CN111342195 A CN 111342195A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1242—Rigid masts specially adapted for supporting an aerial
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a high-position large-array-surface antenna pitching control system which comprises a rotary table, a pair of slide rails arranged on the rotary table, a slide block moving back and forth along each slide rail, a pair of multistage oil cylinders and a pair of constraint connecting rods, wherein the lower hinged point of an antenna is hinged with the slide block, the upper hinged point of the antenna is hinged with the multistage oil cylinders, the upper hinged point of the constraint connecting rods is hinged with the antenna, the lower hinged point of the constraint connecting rods is hinged with the rotary table, the front hinged point of the antenna moves back along with the slide block in the process of pitching up the antenna, and the center position of the antenna is coincided with the center of the rotary table when the antenna is pitched up to a preset angle. The system realizes that the center of the large-scale planar array antenna coincides with the center of the rotary table when the large-scale planar array antenna is pitched to a certain specific angle, so that the antenna is prevented from violent shaking when rotating at high speed.
Description
Technical Field
The invention relates to a high-position large-array-surface antenna pitching control system, which is used for ensuring that a large-array-surface antenna can stably work after being lifted to a high position (more than or equal to 10 m).
Background
With the rapid development of radar technology and the need of modern national defense, the requirements on antennas are higher and higher in order to improve the performance of wireless communication and radar systems, especially the emergence of phased array radars based on arrays.
A phased array radar antenna is an array of a large number of radiators, with hundreds, thousands, or even tens of thousands of radiators. Meanwhile, in order to expand the coverage of the radar, the antenna needs to be vertically tilted to a certain angle, and mechanically rotated at a high speed in the horizontal direction. Designing such a large and heavy planar array antenna system undoubtedly brings about a lot of difficulties for designers.
Firstly, when the planar array antenna is tilted to a specific angle, the center of gravity of the antenna cannot be deviated, and the position of the center of gravity of the antenna is close to or coincident with the center of the turntable, so that the large and heavy antenna cannot be severely shaken when rotating at a high speed.
Second, how to tilt such a large and heavy planar array antenna to a certain angle.
Finally, the large planar array antenna needs to be lifted to a certain high position (more than or equal to 10m) to perform antenna pitching and azimuth high-speed rotation, and the traditional operation of controlling the antenna pitching is to install a control cabinet on the antenna to communicate with a platform terminal, which undoubtedly increases the weight of the antenna and the complexity of control.
Fig. 1a and 1b show the pitching motion process of two conventional antenna pitching systems.
Fig. 1a shows a diagram of the antenna tilt action of a conventional wavefront radar antenna hydraulic tilt system. As shown in fig. 1a, the antenna tilting process is as follows: the hydraulic oil cylinder 4 extends, and the antenna 1 rotates around the support lug 2 under the pushing force of the hydraulic oil cylinder 4 until the antenna is lifted to a specified position. When the antenna is lifted up, the gravity center position of the antenna gradually deviates from the center position of the turntable 3, so that the stress of the turntable is unbalanced. When the antenna rotates at high speed, the stability of the turntable is not facilitated.
Fig. 1b shows an antenna tilt diagram for a conventional wavefront radar antenna dual lead screw tilt system. As shown in fig. 1b, the antenna tilting process is as follows: the motor drives the screw rod 5 to extend, and the antenna 1 can rotate around the support lug 2 under the pushing of the screw rod 4 until the antenna is tilted to a specified position. And the center of gravity of the antenna gradually deviates from the center of the turntable 3, which is not favorable for the stability of the turntable.
In the traditional array plane radar antenna double-screw mechanism pitching system, although the screw rod can extend for a long distance, the control is more complex, the double-screw mechanism is worn for a long time, the double-screw mechanism can cause the asynchronism of the double-screw rod, the antenna is easy to break and damage, and meanwhile, the area of the planar array antenna is large, and the double-screw rod is not suitable for the system.
Although the traditional hydraulic pitching system has the advantages of large thrust, short pitching time and good synchronism, the pitching cylinder has short stroke, so that the large-area planar array antenna cannot be pitched to a specific angle.
Disclosure of Invention
The invention aims to provide a high-order large array plane antenna pitching control system, which is used for ensuring that when a large plane array antenna is pitched to a certain specific angle, the center of the antenna is coincided with the center of a turntable, so that the antenna cannot shake violently when rotating at a high speed.
The invention provides a high-position large-array-surface antenna pitching control system, which comprises a rotary table, a pair of slide rails arranged on the rotary table, a slide block moving back and forth along each slide rail, a pair of multistage oil cylinders and a pair of constraint connecting rods, wherein the lower hinged point of an antenna is hinged with the slide block, the upper hinged point of the antenna is hinged with the multistage oil cylinders, the upper hinged point of the constraint connecting rods is hinged with the antenna, the lower hinged point of the constraint connecting rods is hinged with the rotary table, the front hinged point of the antenna moves back along with the slide block in the process of lifting the antenna, and the center position of the antenna is superposed with the center of the rotary table when the antenna is lifted to a preset angle.
Further, the high-order large-array-face antenna pitching control system further comprises a platform terminal, a rotary table collector ring and a hydraulic pump station, wherein the platform terminal comprises a central processing unit and a proportional amplification plate, the hydraulic pump station comprises an electromagnetic proportional reversing valve used for controlling the multistage oil cylinder, and the central control unit of the platform terminal directly controls the electromagnetic proportional reversing valve of the hydraulic pump station through the proportional amplification plate.
Further, the speed regulation method of the multistage oil cylinder comprises the following steps: the central processing unit provides a voltage signal to the proportional amplification plate, the voltage signal is provided to the electromagnetic proportional directional valve after being amplified by the proportional amplification plate, wherein the opening degree of the electromagnetic proportional directional valve is adjusted by changing the voltage signal so as to influence the stretching speed of the multi-stage oil cylinder.
Further, the high-order large-wavefront antenna pitching control system is characterized by further comprising a pitching encoder for feeding back the pitching position of the antenna to the central processing unit so as to realize closed-loop control.
Further, the multi-stage oil cylinder is a two-stage telescopic oil cylinder, wherein the antenna pitching control method comprises the following steps: reading an angle value d1 of the pitch encoder, wherein when the angle value d1 is more than or equal to 0.0 degrees and less than 1.0 degree, the central processing unit outputs an analog voltage [0.0V, 2.5V ]; when d1 is more than or equal to 1.0 degrees and less than 36.5 degrees, the central processing unit outputs 2.5V of analog voltage; when d1 between 36.5 degrees and 37.0 degrees is an angle corresponding to the extension of the second-stage oil cylinder of the multi-stage oil cylinder, the central processing unit outputs analog voltage [2.5V, 2V ]; when d1 is more than or equal to 37.0 degrees and less than or equal to 73.0 degrees, the central processing unit outputs an analog voltage of 2.0V; when d1 is more than or equal to 73.0 degrees and less than or equal to 75.0 degrees, the central processing unit outputs analog voltage (2.0V, 0.0V) until the elevation angle of the antenna reaches 75.0 degrees.
The invention adopts the sliding type pitching control system, so that the whole antenna slides when the large-scale planar array antenna pitches. The sliding type pitching ensures that when the large-scale planar array antenna is pitched to a certain specific angle, the center of gravity of the antenna is coincided with the center of the rotary table, namely, the antenna is not eccentric. When the traditional radar antenna is pitched, the center of gravity of the antenna gradually deviates from the center of the rotary table, so that the stress on two sides of the rotary table of the antenna is unbalanced, and the antenna shakes violently particularly when the antenna rotates at a high speed, which is not beneficial to the stability and safety of a system.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1a is a diagram of a conventional hydraulic pitching motion;
FIG. 1b is a diagram of a conventional dual lead screw pitch motion process;
fig. 2 is a diagram of a process of pitching motion of an antenna pitching system according to the present invention;
fig. 3 is a simplified diagram of the movement of a sliding antenna tilting system according to a first embodiment of the present invention, wherein the antenna is in a raised position;
FIG. 4a is a block diagram of a conventional hydraulic pitch system;
FIG. 4b is a block diagram of a conventional dual lead screw pitch system;
FIG. 5 is a block diagram of a slip pitch control system according to the present invention;
FIG. 6 is a hardware schematic block diagram of a slip pitch control system according to the present invention; and
fig. 7 is a schematic diagram of a pitch control method of a sliding antenna pitch system according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 2 shows a diagram of a process of tilting the antenna tilting system according to the invention.
In the antenna pitching system shown in fig. 2, the front hinge lug of the antenna 1 is arranged on a slide block 8, the slide block 8 can slide on a slide rail 6, and the rear hinge lug of the antenna 1 is hinged with one end of a multistage oil cylinder 7.
The process of the antenna raising is as follows: the multistage oil cylinder 7 extends, and under the thrust of the multistage oil cylinder, the whole antenna 1 moves forwards along the slide rail under the driving of the slide block until the antenna faces upward to a specified position. The center of gravity of the antenna does not deviate from the center of the turntable 3, and the conditions of large stress and small stress on one side of the turntable do not occur. This facilitates system stability of the turntable at high rotational speeds.
The sliding type pitching control system ensures that when the large-scale planar array antenna is pitched to a certain specific angle, the center of gravity of the antenna is coincided with the center of the rotary table, namely, the antenna is not eccentric. When the traditional radar antenna is pitched, the center of gravity of the antenna gradually deviates from the center of the rotary table, so that the stress on two sides of the rotary table of the antenna is unbalanced, and the antenna shakes violently particularly when the antenna rotates at a high speed, which is not beneficial to the stability and safety of a system.
Adopt multistage telescopic cylinder's beneficial effect: the working stroke of the antenna can be very long, and the requirement of the large-area antenna for pitching to a certain specific angle can be met. The antenna can be shortened when not in work, and is very suitable for occasions with limited installation space of the radar antenna.
Fig. 3 shows a schematic movement diagram of the antenna tilting system of the first embodiment, which includes a slide rail 6 provided on the turntable 3, a slider 8 movable back and forth along the slide rail 6, a multistage cylinder 7, and a restraining link 9. The upper pivot 9a of the restraint link 9 is hinged to the antenna 1 frame, and the lower pivot 9b is hinged to the turntable 3.
In the tilt-up state shown in fig. 3, when the multistage cylinder 7 is extended, the upper fulcrum of the restraining link 9 moves along an arc-shaped trajectory S1, and the arc-shaped trajectory S1 is an arc having a radius from the lower fulcrum to the upper fulcrum. The hinge point of the slider and the antenna moves along a horizontal linear track S2, and the horizontal linear track S2 is spaced from the slide rail in parallel.
Until finally the centre of gravity G of the antenna reaches a vertical position that coincides with the centre 0 of the turntable.
Fig. 4a is a block diagram of a conventional hydraulic pitch system. As shown in fig. 4a, the hydraulic pitch system includes a platform terminal 101, a turntable slip ring 102 (composed of a fixed part and a rotating part), an antenna control box 103, a hydraulic pump station 104, and a pitch cylinder mechanism 105.
Fig. 4b is a block diagram of a conventional dual lead screw pitch system. As shown in fig. 4b, the hydraulic pitch system includes a platform terminal 201, a turntable bus ring 202 (composed of a fixed part and a rotating part), an antenna control box 203, a motor 204, and a double-screw mechanism 205.
Fig. 5 shows a block diagram of a slip pitch control system according to the present invention. As shown in fig. 6, the slip pitch control system includes a platform terminal 301, a turret slip ring 302 (consisting of a fixed part and a rotating part), a hydraulic pump station 304, and a pitch ram mechanism 305.
The comparison shows that the invention can realize the pitching of the antenna without an antenna control box, thereby simplifying the system.
Fig. 6 shows a hardware block diagram of a slip pitch control system according to the present invention. As shown in fig. 6, the platform terminal 301 includes a central processing unit 3010 and a proportional amplification board 3020, and the hydraulic pump station 304 includes an electromagnetic proportional directional valve 3040 for controlling the multi-stage oil cylinders.
The speed regulation function is that the central processing unit provides different voltage signals to the proportional amplification plate, the proportional amplification plate amplifies the voltage signals, and the collector ring provides different voltage signals to the electromagnetic proportional reversing valve, so that the opening degree of the electromagnetic proportional reversing valve is influenced, the telescopic speed of the multi-stage oil cylinder is further influenced, and the speed regulation purpose is achieved. The pitching position information of the antenna is fed back to the central processing unit through the pitching encoder, so that closed-loop control is realized.
The invention adopts the technical scheme that a multi-channel pump station electromagnetic valve is directly supplied with power from a platform through a rotary table collecting ring, so that the pitching function of a large-area antenna is realized, the pitching encoder 3050 is adopted for detecting the pitching sliding position of the antenna, and the pitching encoder is an absolute value encoder.
In a traditional pitching control system, an antenna control box (also called an antenna control cabinet) is mounted on an antenna, a central processing unit, a communication module and the like are mounted in the antenna control box, and the control box is used for receiving and executing a control command from a platform terminal, controlling a hydraulic pump station and a related electromagnetic valve and feeding back the motion state of the antenna to the platform.
The invention does not need an antenna control cabinet, not only saves the cost, but also lightens the weight of the antenna, and particularly in an emergency state, the pitching of the antenna at a certain height can be controlled at the platform terminal by only manually dialing the relay without passing through a central processing unit, so that the antenna can normally work. The reliability of the antenna pitching system is greatly improved.
In a preferred embodiment, the multi-stage oil cylinder adopts a two-stage telescopic oil cylinder and has a speed regulation function.
And the central processing unit performs speed regulation control on the two-stage telescopic oil cylinder according to the angle value fed back by the pitching encoder. Fig. 7 shows a flowchart of a pitch control method of a sliding antenna pitch system according to the present invention.
As shown in FIG. 7, d is 0.0. ltoreq. d1The temperature of less than 1.0 degree is the stable acceleration process (stage), and the central processing unit outputs the analog voltage of 0.0V-2.5V at the moment.
1.0°≤d1< 36.5 ° is the speed holding process, when the central processing unit outputs an analog voltage of 2.5V.
36.5°≤d1The angle of less than 37.0 degrees is the angle of the second-stage oil cylinder of the multi-stage oil cylinder, in order to prevent speed mutation, the process is a speed reduction process, and the central processing unit outputs 2.5V-2V of analog voltage at the moment.
37.0°≤d1The speed is maintained at 73.0 deg.C, and the CPU outputs 2.0V analog voltage.
73.0°≤d1The speed reduction process is carried out at the temperature of less than or equal to 75.0 degrees, and the central processing unit outputs 2.0V-0.0V of analog voltage at the time. Until the elevation angle of the antenna reaches 75.0 degrees, the antenna is tilted to the position and locked by the antenna bolt, and the central processing unit stops outputting.
The speed regulation process can ensure that the pitching mechanism moves stably without impact in the working process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high-position large-array-surface antenna pitching control system is characterized by comprising a rotary table, a pair of slide rails arranged on the rotary table, a slide block moving back and forth along each slide rail, a pair of multistage oil cylinders and a pair of constraint connecting rods, wherein the lower hinge point of an antenna is hinged with the slide block, the upper hinge point of the antenna is hinged with the multistage oil cylinders, the upper hinge point of the constraint connecting rods is hinged with the antenna, the lower hinge point of the constraint connecting rods is hinged with the rotary table,
in the process of lifting the antenna, the front hinge point of the antenna moves backwards along with the sliding block, and when the antenna is lifted to a preset angle, the center position of the antenna is superposed with the center of the rotary table.
2. The high-order large-wavefront antenna pitch control system according to claim 1, further comprising a platform terminal, a turntable collector ring, and a hydraulic pump station, wherein the platform terminal comprises a central processing unit and a proportional amplifier board, the hydraulic pump station comprises an electromagnetic proportional directional valve for controlling the multi-stage oil cylinder, and the central control unit of the platform terminal directly controls the electromagnetic proportional directional valve of the hydraulic pump station through the proportional amplifier board.
3. The high-order large-wavefront antenna pitch control system according to claim 2, wherein the speed adjusting method of the multistage cylinder is as follows: the central processing unit provides a voltage signal to the proportional amplification plate, the voltage signal is provided to the electromagnetic proportional directional valve after being amplified by the proportional amplification plate, wherein the opening degree of the electromagnetic proportional directional valve is adjusted by changing the voltage signal so as to influence the stretching speed of the multi-stage oil cylinder.
4. The high-order large-wavefront antenna pitch control system of claim 3, further comprising a pitch encoder for feeding back the position of the antenna pitch to the central processing unit to implement closed-loop control.
5. The high-order large-wavefront antenna pitch control system according to claim 4, wherein the multi-stage cylinder is a two-stage telescopic cylinder, and wherein the antenna pitch control method comprises: reading the angular value d of a pitch encoder1Wherein when d is more than or equal to 0.0 DEG1Less than 1.0 degree, the central processing unit outputs analog voltage of 0.0V, 2.5V](ii) a When d is more than or equal to 1.0 degree1Less than 36.5 degrees, the central processing unit outputs 2.5V of analog voltage; when d is less than or equal to 36.5 degrees1The angle less than 37.0 degrees is the angle corresponding to the extension of the second-stage oil cylinder of the multi-stage oil cylinder, and the central processing unit outputs the analog voltage of 2.5V and 2V](ii) a When d is more than or equal to 37.0 degrees1Not more than 73.0 degrees, the central processing unit outputs 2.0V of analog voltage; when d is more than or equal to 73.0 degrees1Not more than 75.0 degree, the central processing unit outputs analog voltage (2.0V, 0.0V)]Until the antenna elevation reaches 75.0 deg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252394.9A CN111342195A (en) | 2019-12-09 | 2019-12-09 | High-order big array face antenna every single move control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252394.9A CN111342195A (en) | 2019-12-09 | 2019-12-09 | High-order big array face antenna every single move control system |
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| CN111342195A true CN111342195A (en) | 2020-06-26 |
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| CN201911252394.9A Pending CN111342195A (en) | 2019-12-09 | 2019-12-09 | High-order big array face antenna every single move control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112346017A (en) * | 2020-11-25 | 2021-02-09 | 安徽博微长安电子有限公司 | Radar multi-working-position system |
| CN115479057A (en) * | 2022-08-01 | 2022-12-16 | 广东纳睿雷达科技股份有限公司 | Vehicle-mounted radar antenna pitching control system and control method thereof |
-
2019
- 2019-12-09 CN CN201911252394.9A patent/CN111342195A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112346017A (en) * | 2020-11-25 | 2021-02-09 | 安徽博微长安电子有限公司 | Radar multi-working-position system |
| CN115479057A (en) * | 2022-08-01 | 2022-12-16 | 广东纳睿雷达科技股份有限公司 | Vehicle-mounted radar antenna pitching control system and control method thereof |
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Application publication date: 20200626 |