Locking and limiting integrated device for laser communication tracking rotary table and application of locking and limiting integrated device

Abstract

The invention discloses a locking and limiting integrated device for a laser communication tracking rotary table and application of the locking and limiting integrated device, and belongs to the technical field of optical communication equipment. The locking and limiting integrated device comprises a tracking rotary table mounting base and a rotary table rotating component mounted on the tracking rotary table mounting base; a permanent magnet is fixed to one side of the rotary table rotating component through a permanent magnet fixing device, a first electromagnet fixing device and a second electromagnet fixing device are installed on the tracking rotary table installing base, and a first electromagnet and a second electromagnet are installed in the first electromagnet fixing device and the second electromagnet fixing device respectively. The first electromagnet and the second electromagnet are located on the two sides of the permanent magnet respectively and are aligned with the permanent magnet, and the first electromagnet and the second electromagnet are connected with a power controller and used for controlling power-on and power-off of the electromagnets and the magnitude of current. The method is particularly suitable for a satellite-borne laser communication system, the precision and stability of laser communication can be improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical communication equipment, and particularly relates to an integrated locking and limiting device for a laser communication tracking turntable and its application. Background Art

[0002] In a spaceborne laser communication tracking turntable, the limiting and locking devices are key components to ensure the stable operation and precise alignment of the system. The function of the limiting device is to limit the movement range of the turntable, preventing it from exceeding the designed working area, so as to avoid mechanical damage or system failure caused by excessive rotation or displacement. This function is particularly important for a spaceborne laser communication system because the precise alignment of the turntable is directly related to the stability and signal quality of the laser communication. The limiting device ensures that the turntable is always in the predetermined working position by precisely controlling its movement, thereby improving the alignment accuracy of the laser beam, reducing the risk of signal loss, and ensuring the continuous and stable operation of the communication link.

[0003] The role of the locking device in the non-working state of the turntable is crucial. When the turntable stops working or enters the sleep state, the locking device can automatically fix the turntable in the predetermined position, preventing position drift caused by external disturbances, vibrations or inertia. The traditional locking device for a spaceborne laser communication turntable is usually a one-time locking mechanism, but when the turntable needs to be reactivated or during satellite attitude adjustment, it cannot be re-locked, thus unable to effectively prevent alignment errors or system instability caused by vibrations or external disturbances.

[0004] Currently, the limiting and locking devices in a spaceborne laser communication tracking turntable still adopt a relatively independent and separated structural design. The limiting device and the locking device are usually designed as two independent subsystems, which have problems such as complex structure and excessive weight, and cannot meet the requirements of modern satellite platforms for lightweight and high-efficiency integration. Especially in space applications, the weight and volume of the device have important impacts on the payload and energy efficiency of the satellite. The independent structure not only increases the complexity of the system, but also affects the reliability and accuracy of the device, and cannot meet the increasing high-performance requirements for spaceborne laser communication systems.

[0005] The defects of the existing locking device and limiting device are as follows: 1. The one-time problem of the locking device: Currently, most spaceborne turntables use one-time locking devices. This design results in the inability to lock again when the satellite attitude is adjusted or the turntable enters the sleep state, affecting the stability and long-term reliability of the turntable. When powered off or stopped, the turntable may not be able to stay in a safe position and is easily affected by external disturbances, resulting in the displacement of the turntable position, thereby affecting the stability of the laser communication.

[0006] 2. Impact and wear problems of mechanical limit devices: Traditional mechanical limit devices achieve the limitation of the turntable position through physical contact. However, this method generates mechanical impact and friction, which in turn causes wear. As the usage time increases, the accuracy gradually decreases, and even leads to limit failure, thereby affecting the accuracy and stability of the turntable, resulting in the loss or interruption of laser communication signals and affecting the overall system performance.

[0007] 3. Separation of locking and limiting functions: Traditional locking devices and limit devices are two independent systems, usually each configured with a set of complex mechanical structures. This not only increases the weight and volume of the turntable but also is not conducive to the requirements of spaceborne systems for lightweight and high reliability. Due to the complex structure, the maintenance and installation costs are relatively high, and it is prone to failures in actual applications, causing unnecessary system risks.

[0008] Therefore, the existing technologies cannot effectively solve the requirements of automatic locking and precise limiting of spaceborne turntables during operation, dormancy, and attitude adjustment processes, and a new method is needed to solve these problems. Summary of the Invention

[0009] In view of the above existing problems, the present invention proposes a locking and limiting integrated device for a laser communication tracking turntable and its application. In order to overcome the problems of single - use of the locking device, impact and wear caused by mechanical limit devices, and structural complexity and excessive weight caused by the separation of locking and limiting functions in the prior art, the present invention proposes an innovative design scheme. By replacing the traditional fixed stop with an electromagnet that can be energized, and replacing the movable stop on the rotating shaft with a permanent magnet, the electromagnet generates a magnetic field opposite to that of the permanent magnet when energized, and repels the permanent magnet using the principle of like - poles repelling each other, avoiding direct contact and impact, thereby reducing damage to the turntable. The magnitude of the current is adjustable, and the magnetic force intensity of the electromagnet can be adjusted according to needs, accurately controlling the size of the limiting area, and improving the accuracy and adjustability of the limit.

[0010] In the working state or dormancy state of the turntable, the present invention realizes the automatic locking and unlocking of the turntable through precise electromagnetic control. When the power supply of the turntable is cut off or the electromagnet stops being energized, the electromagnet is equivalent to a fixed iron block and adsorbs with the permanent magnet, realizing the automatic locking of the turntable, avoiding position drift caused by external disturbances, vibrations, or inertia, and ensuring the stability and long - term reliability of laser communication. When the electromagnet is re - energized, the magnetism is restored, and the turntable is automatically unlocked, thus realizing the repeated use of locking and unlocking, and solving the problem that the locking device in the prior art cannot be locked again once used.

[0011] To achieve the above - mentioned purpose, the technical solution of the present invention is as follows: The present invention first provides an integrated locking and limiting device for a laser communication tracking turntable, which includes a tracking turntable mounting base and a turntable rotating component mounted on the tracking turntable mounting base; a permanent magnet is fixed on one side of the turntable rotating component through a permanent magnet fixing device, an electromagnet fixing device one and an electromagnet fixing device two are mounted on the tracking turntable mounting base, an electromagnet one and an electromagnet two are respectively installed inside the electromagnet fixing device one and the electromagnet fixing device two, the electromagnet one and the electromagnet two are respectively located on both sides of the permanent magnet and aligned with the permanent magnet, and the electromagnet one and the electromagnet two are connected to a power controller for controlling their power on, power off and current magnitude.

[0012] Optionally, the electromagnet one and the electromagnet two are in an arc shape, and the radian size thereof is the same as the radian of the rotation trajectory of the permanent magnet driven by the turntable rotating component.

[0013] Optionally, the magnetism of the electromagnet one and the electromagnet two is opposite to the magnetic pole magnetism of the permanent magnet, so that the two repel each other.

[0014] Optionally, both the tracking turntable mounting base and the turntable rotating component are made of non-magnetic metal materials.

[0015] The present invention also provides a laser communication system, which adopts the above-mentioned integrated locking and limiting device for a laser communication tracking turntable. During the working process, when the electromagnet one and the electromagnet two are not powered on, they are equivalent to a fixed magnetic metal, forming a strong attraction with the permanent magnet, locking the turntable rotating component at a predetermined position, so as to ensure that the turntable rotating component does not drift in position under the non-working state; when the electromagnet one and the electromagnet two are powered on, the magnetic forces generated by the electromagnet one and the electromagnet two repel the permanent magnet, resulting in the unlocking of the turntable and entering the limiting state; the power controller adjusts the magnetic force intensity of the electromagnet one and the electromagnet two by adjusting the current magnitude, so as to precisely adjust the size of the limiting area.

[0016] The beneficial effects of the present invention: 1. Non-contact limiting: By the principle of repulsion between opposite magnetic poles of magnets, the present invention avoids the impact and wear caused by mechanical contact, reduces the damage of the turntable and the decline of precision, and even the damage of the turntable structure, and prolongs the service life of the equipment.

[0017] 2. Limiting precision and adjustability: By adjusting the current magnitude to control the magnetic intensity of the electromagnet, the size of the limiting area can be precisely controlled, improving the limiting precision and adjustability, and being able to be flexibly set according to requirements.

[0018] 3. Repeatable locking and unlocking: The locking device of the present invention can be repeatedly used by energizing and de-energizing the electromagnet, solving the limitations of traditional disposable locking devices and meeting the requirements of modern satellite platforms for lightweight, high-efficiency integration, and high reliability.

[0019] 4. Lightweight and high integration: By integrating the locking and limiting functions, the present invention reduces the structural complexity and weight, meeting the needs of modern satellite platforms for lightweight and high-efficiency integration. Brief Description of the Drawings

[0020] Figure 1 Working principle diagram of the present invention; Figure 2 Schematic diagram of the overall structure of the present invention; Figure 3 is Figure 2 Partial enlarged view of; Explanation of reference numerals in the drawings: 1. Turntable rotating component; 2. Tracking turntable mounting base; 3. Electromagnet fixing device I; 4. Electromagnet fixing device II; 5. Permanent magnet fixing device; 6. Electromagnet I; 7. Electromagnet II; 8. Permanent magnet. Detailed Embodiment

[0021] Combined with the drawings and the detailed embodiment, the present invention is further clarified. The following embodiments are only used to illustrate the technical solutions of the present invention and do not limit the protection scope of the present invention.

[0022] As Figure 2-3 shown, a locking and limiting integrated device for a laser communication tracking turntable in this embodiment includes: a tracking turntable mounting base 2 and a turntable rotating component 1 mounted on the tracking turntable mounting base 2; a permanent magnet 8 is fixed on one side of the turntable rotating component 1 through a permanent magnet fixing device 5, an electromagnet fixing device I 3 and an electromagnet fixing device II 4 are mounted on the tracking turntable mounting base 2, an electromagnet I 6 and an electromagnet II 7 are respectively mounted inside the electromagnet fixing device I 3 and the electromagnet fixing device II 4, the electromagnet I 6 and the electromagnet II 7 are respectively located on both sides of the permanent magnet 8 and aligned with the permanent magnet 8, and the electromagnet I 6 and the electromagnet II 7 are connected to a power controller for controlling their energization, de-energization, and current magnitude..

[0023] In this embodiment, the turntable rotating component 1, the tracking turntable mounting base 2, and the fixing devices are all made of non-magnetic metal materials to reduce magnetic field interference and ensure stable interaction between the electromagnet and the permanent magnet.

[0024] The electromagnet fixing device 1 and the electromagnet fixing device 2 are firmly fixed on the turntable base to ensure that the electromagnet 1 and the electromagnet 2 maintain a fixed position relative to the base, so as to ensure that the electromagnet is not affected by external disturbances during operation and maintain precise control over the permanent magnet.

[0025] The permanent magnet fixing device 5 is fixed on the turntable rotating component 1, enabling the permanent magnet 8 to rotate with the azimuth axis system of the turntable and maintaining a constant relative position between it and the electromagnet 1 and the electromagnet 2, ensuring the stability of the magnetic force action.

[0026] The power controller of the present invention is integrated into the central processor of the turntable to control the energization, de-energization, and current intensity of the electromagnet 1 and the electromagnet 2, providing the ability to precisely adjust the magnetic force of the electromagnet. By adjusting the magnitude of the current, the magnetic force intensity of the electromagnet 1 and the electromagnet 2 is controlled, thereby precisely adjusting the size of the turntable limiting area. This adjustability enables the limiting area to be flexibly set according to specific requirements.

[0027] In this embodiment, the shapes of the electromagnet 1 and the electromagnet 2 are arc-shaped, and their arcs match the arc of the rotation trajectory of the permanent magnet. The repulsive magnetic force between the electromagnet 1, the electromagnet 2 and the permanent magnet 8 can maintain an appropriate magnetic force action during the rotation of the turntable, avoiding wear problems caused by mechanical contact and friction.

[0028] The magnetic design of the electromagnet and the permanent magnet is also very crucial. The magnetic field generated by the electromagnet 1 is the N pole, the N pole direction of the permanent magnet is close to the side of the electromagnet 1, and the magnetic field generated by the electromagnet 2 is the S pole. In this way, the magnetic pole arrangement directions among the electromagnet 1, the electromagnet 2 and the permanent magnet 8 form a magnetic force action of like poles repelling each other, which can effectively control the limiting area during the operation of the turntable and prevent any unnecessary displacement or friction.

[0029] When the electromagnet 1 and the electromagnet 2 are not energized, the electromagnet 1 and the electromagnet 2 are equivalent to a fixed magnetic metal, forming a strong attraction with the permanent magnet 8, thus playing a protective role in locking the turntable rotating component 1. At this time, the mutual attraction between the permanent magnet 8 and the electromagnet 1, the electromagnet 2 will stably lock the turntable in a predetermined position, preventing the position drift of the turntable caused by external disturbances, vibrations or inertia during transportation, storage and launch, and ensuring the safety and stability of the equipment.

[0030] When it is necessary to unlock or the turntable enters the working state, after the electromagnet 1 6 and the electromagnet 2 7 are energized, by adjusting the current magnitude, the magnetism of the electromagnet 1 6 and the electromagnet 2 7 repels the permanent magnet. At this time, the turntable rotating component 1 is pushed by the repulsive forces of the electromagnet 1 6 and the electromagnet 2 7, thereby realizing the unlocking function and entering the limiting state. By adjusting the magnitude of the current, the size of the limiting area can be accurately controlled to ensure that the turntable is always in an appropriate position in each working state.

[0031] If the turntable enters the sleep state or shuts down, first disconnect the power supplies of the electromagnet 1 6 and the electromagnet 2 7 and rotate the turntable to the vicinity of the electromagnet 1 6 and the electromagnet 2 7, then the permanent magnet 8 will naturally adsorb to the electromagnet, forming a stable locking state. At this time, after power is cut off again or the sleep mode is entered, the turntable rotating component 1 will be in a safe locked position, thereby realizing the locking protection.

[0032] Through this design that integrates repeatable locking and limiting, the present invention can effectively solve the problems in the locking and limiting functions of traditional spaceborne laser communication tracking turntables, reduce mechanical shock and wear in traditional designs, and improve the stability and reliability of the system.

[0033] The present invention realizes contactless limiting and locking functions through the interaction between the electromagnet and the permanent magnet, reduces mechanical friction, and ensures the stability of the turntable accuracy during long-term use. At the same time, the repeated use characteristics of the electromagnet being energized and de-energized solve the limitations of traditional one-time locking devices and can meet the requirements of modern satellite platforms for lightweight, high-efficiency integration, and high reliability.

Claims

1. A locking and limiting integrated device for a laser communication tracking turntable, characterized in that: include: A tracking turntable mounting base (2) and a turntable rotating component (1) mounted on the tracking turntable mounting base (2); a permanent magnet (8) is fixed on one side of the turntable rotating component (1) via a permanent magnet fixing device (5); an electromagnet fixing device 1 (3) and an electromagnet fixing device 2 (4) are mounted on the tracking turntable mounting base (2); an electromagnet 1 (6) and an electromagnet 2 (7) are respectively mounted in the electromagnet fixing device 1 (3) and the electromagnet fixing device 2 (4); the electromagnet 1 (6) and the electromagnet 2 (7) are respectively located on both sides of the permanent magnet (8) and aligned with the permanent magnet (8); the electromagnet 1 (6) and the electromagnet 2 (7) are connected to a power controller for controlling their power on and off and the magnitude of the current.

2. The locking and limiting integrated device for a laser communication tracking turntable according to claim 1 is characterized in that: The electromagnet 1 (6) and the electromagnet 2 (7) are in the shape of circular arcs, and the size of their arcs is the same as the arc of the rotation trajectory of the permanent magnet (8) driven by the turntable rotating component (1).

3. The locking and limiting integrated device for a laser communication tracking turntable according to claim 1 is characterized in that: The magnetism of the first electromagnet (6) and the second electromagnet (7) is opposite to the magnetic pole magnetism of the permanent magnet (8), so that the two repel each other.

4. The locking and limiting integrated device for a laser communication tracking turntable according to claim 1 is characterized in that: The tracking turntable mounting base (2) and the turntable rotating component (1) are both made of non-magnetic metal materials.

5. A laser communication system, characterized in that: The locking and limiting integrated device for a laser communication tracking turntable according to any one of claims 1 to 4 is adopted. During operation, when no power is supplied, electromagnet 1 (6) and electromagnet 2 (7) are equivalent to a fixed magnetic metal, and form a strong attraction with the permanent magnet (8), locking the turntable rotating part (1) in a predetermined position, thereby ensuring that the turntable rotating part (1) does not drift in position when not in operation; when electromagnet 1 (6) and electromagnet 2 (7) are energized, the magnetic force generated by electromagnet 1 (6) and electromagnet 2 (7) repel the permanent magnet (8), causing the turntable to be unlocked and enter a limiting state; the power controller adjusts the magnetic strength of electromagnet 1 (6) and electromagnet 2 (7) by adjusting the current, thereby accurately adjusting the size of the limiting area.

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