CN110456830B - Solar sailboard sun-facing orientation driving system and sun-facing orientation method thereof - Google Patents

Abstract

The invention discloses a solar sailboard sun alignment directional driving system and a sun alignment directional method thereof. The system can quickly and effectively detect whether the solar energy unfolding array is at the optimal position for receiving sunlight and perform sun orientation adjustment.

Description

A solar sail panel sun-oriented driving system and its sun-oriented method

Technical field

The invention relates to the field of satellite technology, and in particular to a solar sail panel sun-orientation drive system and a sun-orientation method thereof.

Background technique

Since the 1990s, microsatellites have become one of the research focuses of the world's aerospace industry. The development of my country's microsatellite industry has also been rapid in recent years. Microsatellites have developed from innovative concepts, system design, technology implementation, and flight experiments to specific space application. Therefore, they also need to have higher and higher functional density. The body-mounted battery arrays and unfolded battery arrays on traditional microsatellites are increasingly unable to meet the demand for electrical energy. Currently, solar panel driving devices are widely used on large satellites weighing more than 100 kilograms, and there is less research on solar panel driving devices on CubeSats. Honeybee Company of the United States has developed a dual-unit CubeSat solar array driver and put it on the market. The device has a relatively simple structure and no slip rings. It can only rotate the sailboard at plus or minus 180 degrees, but cannot rotate the sailboard freely. Patent No. CN201610414531.4 discloses a satellite sun-oriented control system and its control method. It mainly calculates the position of the sun through sensors such as star sensors, and then controls the attitude of the satellite to orient the sailboard toward the sun. The system structure It is complicated, and the continuous adjustment of the satellite attitude will reduce the life of attitude control components such as momentum wheels.

Contents of the invention

The object of the present invention is to provide a solar sail panel sun-oriented driving system and a sun-oriented method thereof.

In order to achieve the above objects, the technical solutions adopted by the present invention are as follows:

A solar sail panel sun-oriented driving system includes a first hinge, a rotating shaft, a torsion spring, a second hinge, a clamp block, a slip ring, a motor, a solar expansion array and a sun-oriented orientation detection system. The clamp block, The slip ring and the motor are arranged inside the satellite. The output shaft of the motor is fixedly connected to the inner end of the rotor of the slip ring. The clamping block is wrapped around the outside of the stator of the slip ring. The outer end of the rotor of the slip ring is connected to The second hinge is fixedly connected, the second hinge is provided with a second hinge shaft hole, the first hinge is provided with a first hinge shaft hole, and the shaft passes through the second hinge shaft hole. and the first hinge rotating shaft hole to realize the hinged connection between the first hinge and the second hinge. The torsion spring is sleeved on the outside of the rotating shaft. The solar expansion array is fixedly connected to the first hinge. The sun-oriented orientation The detection system is installed on the solar energy deployment array. The sun orientation detection system can detect whether the sunlight is parallel to the axial vertical plane of the solar energy expansion array. The axial vertical plane of the solar energy expansion array is perpendicular to the solar energy expansion array. The array of the solar energy expansion array passes through or is parallel to the central axis of the output shaft of the motor.

Further, the sun-facing orientation detection system includes a first photosensitive diode, a second photosensitive diode and a light baffle. The first photosensitive diode and the second photosensitive diode are respectively arranged symmetrically close to both sides of the light baffle. The baffle The light panel is arranged perpendicular to the array surface of the solar energy deployment array, and the axial vertical plane of the solar energy expansion array is parallel to or coincides with the center plane of the light blocking plate perpendicular to the solar energy expansion array surface.

Further, the rotating shaft includes a first rotating shaft and a second rotating shaft, and the torsion spring includes a first torsion spring and a second torsion spring. The first rotating shaft and the second rotating shaft are respectively located on both sides of the second hinge. The spring and the second torsion spring are sleeved on the outside of the first rotating shaft and the second rotating shaft respectively.

Further, the clamping block includes a symmetrically arranged left clamping block and a right clamping block.

Further, the clamping block is fixedly connected to the cube satellite middle frame.

Further, the output shaft of the motor is fixedly connected to the inner end of the rotor of the slip ring through a coupling.

According to the sun orientation method of the solar sail panel sun orientation drive system described above, the solar deployment array receives sunlight. If the sunlight is not parallel to the axial vertical plane of the solar deployment array, the light shielding plate will Cast a shadow on the solar energy deployment array, covering at least a part of the photosensitive diodes on one side, so that the photocurrent generated by the first photodiode and the second photosensitive diode is different, and the motor drives the solar energy deployment array around the motor. The output shaft rotates until the sun's rays are parallel to the axial vertical plane of the solar array.

Compared with the prior art, the present invention has the following effects:

(1) The solar deployment array of the present invention is connected to the motor through a slip ring. The rotation of the motor drives the rotor of the slip ring to rotate, thereby driving the solar deployment array to rotate. The structural design is simple and reasonable, and the power transmission line on the solar deployment array can be connected to the rotor of the slip ring. . The stator of the slip ring is connected to the satellite battery through a power transmission line, thereby transmitting the electricity generated by the solar energy into the battery, and avoiding the winding of the power transmission line during the rotation of the solar deployment array;

(2) The sun direction detection system includes a first photosensitive diode, a second photosensitive diode and a light baffle. The first photosensitive diode and the second photosensitive diode are symmetrically arranged on both sides of the light baffle. The light baffle is perpendicular to the solar energy deployment array. The array is set up and the axial vertical plane of the solar array is parallel to or coincides with the light shield perpendicular to the center plane of the solar array. The system can quickly and effectively detect the solar array through two symmetrically arranged photodiodes. Is it in the best position to receive sunlight?

Description of drawings

Figure 1 is an exploded view of the solar sail panel sun-oriented driving system of the present invention.

Figure 2 is a schematic diagram of the sun-directed drive of the solar sail panel in the closed state of the solar deployment array.

Figure 3 is a top view of the internal structure of the solar sail panel sun-oriented driving system of the present invention.

Figure 4 is a side view of the internal structure of the solar sail panel sun-oriented driving system of the present invention.

Figure 5 is a schematic diagram of the CubeSat's solar sail panel directional drive toward the sun in the unfolded state of the solar deployment array.

Figure 6 is a schematic diagram of the sun-directed driving system of the solar sail panel according to the present invention driving the solar deployment array to rotate.

Detailed ways

The implementation of the present invention is described in detail below with reference to specific embodiments.

As shown in Figure 1-4, a solar sail panel sun-oriented driving system includes a first hinge 1, a rotating shaft 2, a torsion spring 3, a second hinge 4, a clamping block 5, a slip ring 6, a motor 8, Solar energy deployment array 14 and sun orientation detection system, the clamping block 5, the slip ring 6, and the motor 8 are arranged inside the satellite, and the output shaft of the motor 8 is fixedly connected to the inner end of the rotor 6-1 of the slip ring 6. The clamping block 5 is wrapped around the outside of the stator 6-2 of the slip ring 6. The outer end of the rotor 6-1 of the slip ring 6 is fixedly connected to the second hinge 4. The second hinge 4 is provided with There is a second hinge shaft hole. The first hinge 1 is provided with a first hinge shaft hole. The shaft 2 passes through the second hinge shaft hole and the first hinge shaft hole to realize the first hinge. 1 is hinged with the second hinge 4, the torsion spring 3 is sleeved on the outside of the rotating shaft 2, the solar expansion array 14 is fixedly connected to the first hinge 1, and the sun orientation detection system is arranged on the solar On the deployment array 14, the sun orientation detection system can detect whether the sun's rays are parallel to the axial vertical plane of the solar deployment array 14, and the axial vertical plane of the solar deployment array 14 is perpendicular to the solar deployment array. 14 and passes through or is parallel to the central axis of the output shaft of the motor 8 .

With reference to Figure 2, the sun direction detection system includes a first photosensitive diode 12-1, a second photosensitive diode 12-2 and a light baffle 13. The first photosensitive diode 12-1 and the second photosensitive diode 12-2 are respectively The light shielding plate 13 is arranged symmetrically close to both sides of the light shielding plate 13. The light shielding plate 13 is arranged perpendicular to the array surface of the solar energy deployment array 14, and the axial vertical plane of the solar energy deployment array 14 is perpendicular to the light shielding plate 13. The central planes of the 14 fronts of the solar energy deployment array are parallel or coincident.

1, the rotating shaft 2 includes a first rotating shaft 2-1 and a second rotating shaft 2-2, the torsion spring 3 includes a first torsion spring 3-1 and a second torsion spring 3-2, the first rotating shaft 2- 1 and the second rotating shaft 2-2 are respectively located on both sides of the second hinge 4, and the first torsion spring 3-1 and the second torsion spring 3-2 are respectively sleeved on the first rotating shaft 2-1 and the second rotating shaft 2- 2, the left and right symmetrical first rotating shaft 2-1 and the second rotating shaft 2-2 are put on the torsion spring 3 in the middle, and then the first hinge 1 and the second hinge 4 are connected, so that the first hinge 1 can Rotates around the rotating shaft 2 relative to the second hinge 4, and due to the blocking position between the two hinges, the first hinge 1 can only be unfolded to a fixed angle relative to the second hinge 4, and the torsion spring 3 is at The solar expansion array 14 is pre-tensioned when it is folded, so that the required kinetic energy can be provided when the solar energy expansion array 14 needs to be expanded.

Further, the clamping block 5 includes a left clamping block 5-1 and a right clamping block 5-2. The two clamping blocks are the main load-bearing components of the system. The sliding ring 6 clamping groove on the clamping block is a semi-cylindrical concave. The groove can be matched with the stator 6-2 end of the slip ring 6. The two clamping blocks 5 clamp the stator 6-2 end of the slip ring 6 and then screw in the screws through four pairs of threaded holes to clamp the stator end of the slip ring. fixed.

Further, the clamping block 5 is fixedly connected to the cube satellite middle frame 9 , and the middle frame 9 is flanked by a left frame 10 and a right frame 11 .

Further, the output shaft of the motor 8 is fixedly connected to the inner end of the rotor 6-1 of the slip ring 6 through the coupling 7. The coupling 7 is matched with the shaft of the motor 8 and then inserted into the rotor hole of the slip ring 6. , instead of being glued, the transmission from the motor 8 to the slip ring 6 is realized, and the power transmission line on the solar expansion array 14 can be connected to the rotor 6-1 of the slip ring 6 (this part of the power transmission line follows the solar expansion array 14 rotate together), the stator 6-2 of the slip ring 6 is connected to the satellite battery through an electric energy transmission line (this part of the electric energy transmission line is stationary together with the stator 6-2), thereby transmitting the electricity generated by the solar energy to the battery (the electric energy passes through the A part of the electric energy transmission line, the slip ring, and the second part of the electric energy transmission line are transmitted to the battery) to avoid the solar energy deployment array 14 from winding the electric energy transmission line during the rotation process.

With reference to Figures 5-6, the sun orientation method of the solar sail panel sun orientation drive system of the present invention is: the solar expansion array 14 receives sunlight. If the sunlight is not aligned with the axial direction of the solar expansion array 14 The vertical plane is parallel, the light baffle 13 will cast a shadow on the solar expansion array 14, covering at least a part of the photodiodes on one side, so that the light generated by the first photodiode 12-1 and the second photodiode 12-2 The motor 8 drives the solar expansion array 14 to rotate around the output axis of the motor 8 until the sunlight is parallel to the axial vertical plane of the solar expansion array 14. This can be determined by comparing the current magnitudes of the two photodiodes. The direction of the sunlight is coming, and then it is determined whether the solar expansion array 14 is in the best position to receive sunlight, thereby achieving sun orientation.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have other aspects. Various changes and modifications are possible, which fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. The solar sailboard sun alignment directional driving system is characterized by comprising a first hinge (1), a rotating shaft (2), a torsion spring (3), a second hinge (4), a clamping block (5), a slip ring (6), a motor (8), a solar unfolding array (14) and a sun alignment directional detection system, wherein the clamping block (5), the slip ring (6) and the motor (8) are arranged inside a satellite, an output shaft of the motor (8) is fixedly connected with the inner end of a rotor (6-1) of the slip ring (6), the clamping block (5) is coated on the outer part of a stator (6-2) of the slip ring (6), the outer end of the rotor (6-1) of the slip ring (6) is fixedly connected with the second hinge (4), a second hinge rotating shaft hole is arranged on the second hinge (4), the first hinge (1) is provided with a first hinge rotating shaft hole, the rotating shaft (2) penetrates through the second hinge rotating shaft hole and the first hinge rotating shaft hole to realize the hinging of the first hinge (1) and the second hinge (4), the torsion spring (2) is arranged on the outer part of the rotor (6-1) of the slip ring (6) to be fixedly connected with the sun alignment detection system, the sun alignment orientation detection system can detect whether solar rays are parallel to the axial vertical plane of the solar energy unfolding array (14), and the axial vertical plane of the solar energy unfolding array (14) is perpendicular to the array plane of the solar energy unfolding array (14) and passes through or is parallel to the central axis of the output shaft of the motor (8);

the sun alignment orientation detection system comprises a first photosensitive diode (12-1), a second photosensitive diode (12-2) and a light barrier (13), wherein the first photosensitive diode (12-1) and the second photosensitive diode (12-2) are respectively and symmetrically abutted against two sides of the light barrier (13), the light barrier (13) is perpendicular to the array surface of the solar energy unfolding array (14) and the axial vertical surface of the solar energy unfolding array (14) is parallel or coincident with the central surface of the light barrier (13) perpendicular to the array surface of the solar energy unfolding array (14);

the rotating shaft (2) comprises a first rotating shaft (2-1) and a second rotating shaft (2-2), the torsion spring (3) comprises a first torsion spring (3-1) and a second torsion spring (3-2), the first rotating shaft (2-1) and the second rotating shaft (2-2) are respectively positioned at two sides of the second hinge (4), and the first torsion spring (3-1) and the second torsion spring (3-2) are respectively sleeved outside the first rotating shaft (2-1) and the second rotating shaft (2-2);

the clamping blocks (5) comprise left clamping blocks (5-1) and right clamping blocks (5-2).

2. Solar panel sun-to-sun directional drive system according to claim 1, characterized in that the clamping blocks (5) are fixedly connected with a cubic star frame (9).

3. The solar array sun-to-sun directional drive system according to claim 1, characterized in that the output shaft of the motor (8) is fixedly connected with the inner end of the rotor (6-1) of the slip ring (6) through a coupling (7).

4. A solar array opposite sun orientation method according to any one of claims 1-3, characterized in that the solar array (14) receives sunlight, if solar rays are not parallel to the axial vertical plane of the solar array (14), a light barrier (13) casts a shadow on the solar array (14) to cover at least a part of one side of the photodiodes, so that photocurrents generated by the first photodiode (12-1) and the second photodiode (12-2) are different, and the motor (8) drives the solar array (14) to rotate around an output shaft of the motor (8) until solar rays are parallel to the axial vertical plane of the solar array (14).