137 results about "Solar sail" patented technology

The invention discloses an analog simulation system for a solar panel driving mechanism. A software system of the analog simulation system comprises an SADA mathematical model module and an SADA interface module. The SADA mathematical model module can simulate the operation principle and the actual output of a real SADA product to the greatest extent; the SADA interface module is divided into a. Dll file algorithm calling sub-module, a fault configuration sub-module, a package sub-module, an RS422 interface sub-module and a visual operation interface; a. Dll file generated by the SADA mathematical model module is called based on the LABVIEW control function, the file output is subjected to fault selectable setting processing, packaging is carried out again according to a real product protocol, a program frame is simulated through an RS422 serial port, and real SADA product output simulation is completed; and finally, drawing a visual operation interface of the SADA analog simulator. Under the condition that a satellite platform system does not have a real solar panel driving structure, the functions of hardware interface accuracy testing between satellites, interface protocol rationality iteration, on-orbit control algorithm correctness verification and the like are achieved instead of the real solar panel driving structure.

The invention discloses a parameter self-adaptive control method for a low-orbit satellite with a solar panel driving device. Belongs to the technical field of aerospace, and particularly relates to the technical field of low-orbit satellite parameter control. The satellite attitude control method solves the technical problems of overcoming the influence of the rotational inertia of the satellite and compensating the influence of the SADA vibration disturbance torque and the atmospheric resistance torque on the satellite attitude control precision. The method comprises the following steps: constructing a satellite attitude kinematics and dynamics equation in a quaternion form, and constructing a satellite attitude kinematics and dynamics equation for designing an attitude controller on the basis of the satellite attitude kinematics and dynamics equation; defining an error attitude kinematics and dynamics equation of the satellite through the attitude control error and the angle control error; carrying out segmentation conversion on a to-be-estimated parameter and a known state variable, and expressing the negative influence of a rotational inertia error on the attitude by matrix operation; designing the control torque of the attitude controller by adopting a mode of combining nonlinear feedback control with self-adaptive control; and updating the self-adaptive estimated value in the control parameters of the attitude controller by adopting a parameter self-adaptive law.

The invention provides an in-orbit energy management method and system for a damaged satellite, network equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: autonomously determining whether to execute the reasoning of the SADA rotation angle based on the current state data of a satellite, and selecting a reasoning model under the current energy limitation condition; simulating a regression relationship between the SADA rotation angle and the predicted current of the solar panel according to the selected reasoning model and the current state data of the satellite; and searching the corresponding SADA target rotation angle capable of enabling the predicted current of the solar panel to be maximum from the regression relationship based on a Bayesian optimization strategy, and converting the SADA target rotation angle into an SADA control instruction. According to the method, a damaged satellite energy management framework is constructed, real-time and accurate prediction of the optimal sun-pointing angle of the current peak value of the solar panel in the current damaged state is realized, energy fluctuation caused by satellite attitude and sun vector change is avoided, and an important basis is provided for autonomous maintenance of energy supply on a satellite.

The invention provides a self-powered autonomous vibration suppression method for a large flexible solar panel, and belongs to the field of spacecraft structures and vibration control. The problem that in the prior art, when the size of a sailboard is large, multi-channel signal collection and power supply circuit design greatly consume resources such as satellite power and control interfaces is solved. According to the method, an autonomous vibration suppression device is installed on a large flexible solar panel, the flexible solar panel converts solar energy into electric energy and stores the electric energy in a battery for power supply, and piezoelectric fiber sheets convert structural strain energy generated by vibration of the large flexible solar panel into electric energy and stores the electric energy in the battery through the inverse piezoelectric effect to supply power to a bidirectional piezoelectric actuator. Under the power supply of the battery, the bidirectional piezoelectric actuator inhibits the deformation and vibration of the large flexible solar panel according to the local strain information on the large flexible solar panel. The flexible solar panel is mainly used for large flexible solar panels.

The present invention provides a tracking planning control method and system for a two-dimensional solar sailboard drive mechanism. Based on the deviation between the desired rotation angle required when the solar sailboard is pointed to the sun and the current actual rotation angle of the solar sailboard drive mechanism, the tracking angular velocity of the rotation axis and the swing axis of the solar sailboard drive mechanism are planned during the rotation process, so as to realize the rotation of the solar sailboard drive mechanism to the desired rotation angle. A corresponding terminal and medium are also provided. The tracking planning control method and system for a two-dimensional solar sailboard drive mechanism provided by the present invention have the advantages of simple control method, high angle control accuracy and stable rotation control.

The invention discloses a satellite attitude control method and system, electronic equipment and a storage medium, and relates to the technical field of satellite attitude control, and the method comprises the steps: obtaining an inertia parameter combination of a satellite under a satellite centroid body coordinate system when all rotating mechanisms in a solar panel driving device of the satellite are combined at each angular position; calculating a PID parameter combination corresponding to each inertia parameter combination; fitting a corresponding relation between the angular position of each rotating mechanism and all PID parameters; and calculating an expected control moment for adjusting the satellite from the current attitude to the final expected attitude by using a PID control law associated with the corresponding relationship, and controlling an execution mechanism of the satellite to output the expected control moment. The method not only can meet the control index requirements of the whole satellite attitude stability on the amplitude-frequency characteristic and the phase-frequency characteristic, but also can adapt to the inertia time-varying characteristic of the satellite caused by the rotation of the sailboard, the closed-loop control robustness is relatively high, and the engineering implementation operability is strong.

An integrated spaceborne SAR satellite platform, belonging to the field of spacecraft technology, solves the problems of poor temperature uniformity of existing satellite platform mounting plates, large SAR antenna envelope, inability to meet high-precision single-unit installation requirements, and low structural strength. The platform comprises: a SAR antenna, a feed assembly, a single-unit mounting plate, an external single-unit device, an internal single-unit device, a platform main frame, and a solar sail; the platform main frame, single-unit mounting plate, and solar sail constitute the cabin; the solar sail is located below the platform main frame; the SAR antenna, feed assembly, and external single-unit device are mounted on the outer surface of the single-unit mounting plate; the internal single-unit device is mounted on the inner surface of the single-unit mounting plate; the single-unit mounting plate includes a honeycomb panel, metal gaskets, and pre-embedded heat pipes; the honeycomb panel includes a honeycomb core and a honeycomb panel skin; the metal gaskets are connected to the pre-embedded heat pipes. This invention is applicable to satellite platform spacecraft platforms, spacecraft configuration and layout design, spacecraft structural thermal control design, spacecraft on-orbit monitoring, and SAR satellite on-orbit active compensation.

The invention provides a thermal control device for a high-power wireless energy transmission driving mechanism. The thermal control device comprises a wireless driving mechanism, a heat dissipation plate, a heat pipe, a heat expansion plate, a heat conduction filler and a thermal control coating, the wireless driving mechanism comprises two high-heat-flux heat sources, namely a static coil and a rotating coil; the rotating coil is mounted on the insulating mounting plate, the insulating mounting plate is mounted on the magnetic conductive material, the magnetic conductive material is mounted on the rotating end cover, and the heat pipe is arranged on the rotating end cover to transmit heat to the heat dissipation plate on the reverse side of the solar panel; the static coil is mounted on the static end cover through an insulating mounting plate and a magnetic conductive material, and a heat pipe is arranged on the static end cover to transmit heat to the heat dissipation plate on the nightside; heat is mainly radiated to a cold space after reaching a radiating surface from the coil through the insulating mounting plate, the magnetic conductive material, the end cover and the heat pipe. The invention aims to solve the design problem of a high-power wireless energy driving mechanism of a satellite or a space station, and provides a design basis for solving the temperature control of a wireless energy transmission driving mechanism.

The utility model provides a folding fan type solar sail and a sailing boat with the folding fan type solar sail. The folding fan type solar sail comprises a mast, an inclined supporting sail rod, an inclined pulling sail rod, a first flexible solar cell panel, a second flexible solar cell panel, a third flexible solar cell panel, a first shaft sleeve joint, a second shaft sleeve joint, a third shaft sleeve joint and a conical fixing buckle. Inclined supporting sail rods and inclined pulling sail rods are arranged on the two sides of the mast, the inclined supporting sail rods and the mast are connected through second shaft sleeve joints, the inclined supporting sail rods and the mast are connected through first shaft sleeve joints, third shaft sleeve joints are arranged at the tail ends of the inclined supporting sail rods, the third shaft sleeve joints are fixed relative to the inclined supporting sail rods, and the inclined pulling sail rods and the inclined supporting sail rods are connected through the third shaft sleeve joints. A first flexible solar cell panel, a second flexible solar cell panel and a third flexible solar cell panel are arranged between the diagonal bracing sail rod and the mast; the second shaft sleeve joint slides up and down on the mast, so that the sail is unfolded and folded, the sail is more efficient and quicker to use, and the sailing adaptability of the sailing boat is improved by the generated electric power.

A spacecraft with retractable solar sails is a spacecraft that is designed as a semi-autonomous spacecraft that can maneuver and propel using radiation pressure. The spacecraft includes a spherical hull and several propulsion mechanisms. The spherical hull houses the propulsion mechanisms, the payload, and other systems that enable the semi-autonomous operation of the spacecraft. The spherical hull also enables the semi-autonomous operation of the propulsion mechanisms. The propulsion mechanisms enable the propulsion and maneuvering of the spacecraft using radiation pressure in deep space. Each of the propulsion mechanisms includes a solar sail assembly, a sail receptacle, a pneumatic actuator, and a quantity of fluid. The solar sail assembly supports several retractable solar sails. The sail receptacle allows the retraction of the solar sail assembly into the spherical hull. The pneumatic actuator allows the deployment of the solar sail assembly. The quantity of fluid enables the operation of the pneumatic actuator.

The invention relates to the technical field of aerospace engineering and remote sensing, in particular to an extremely-low-orbit median-inclination-angle remote sensing satellite and a design method.The satellite runs on a median-inclination-angle orbit, and a spherical crown type windward side and smooth side plate transition structure is adopted to reduce aerodynamic resistance and homogenize heat flow; the detector and the refrigerator are connected with the main heat dissipation surface through a heat conduction structure to form a cold end heat dissipation channel; when a satellite is in a launching state, the solar panel is folded on the Zs side of a satellite body, the satellite is unfolded in the + Ys direction after entering an orbit, an included angle is formed between the normal of the solar panel and the-Zs direction, the SAR antenna is folded on the Ys side of the satellite body, the satellite is unfolded in the-Ys direction after entering the orbit, and the normal of the array plane of the SAR antenna points to the + Zs direction, so that a sunshade and counterweight structure is formed; the positive and negative Xs surfaces are provided with double Hall electric thrusters, the orbit solar angle is calculated through the GNSS and the sun vector, yaw switching is executed, and forward and reverse flight switching is achieved.

This invention relates to a test device and verification method for the space-ground consistency of a flexible spacecraft control system based on uncertainty quantification, belonging to the fields of intelligent manufacturing equipment industry and space-ground consistency verification technology. To address the problem of space-ground consistency verification and evaluation for flexible spacecraft, this invention includes an air-floating robot and a flexible component. The air-floating robot simulates the central rigid body of the flexible spacecraft, and the flexible component simulates the deployed solar panels. One end of the flexible component is connected to the upper support column of the air-floating robot, while the other end is free and equipped with a weight. Fiber optic grating sensors are distributed on the flexible component to measure flexible vibrations. A piezoelectric ceramic plate is installed at the end of the flexible component connected to the air-floating robot for driving and controlling the vibration of the flexible component. This invention evaluates the space-ground consistency of the designed flexible spacecraft control test system and, based on uncertainty quantification analysis, provides the impact level of uncertainty sources on space-ground consistency.

The utility model discloses a solar panel unfolding mechanism which comprises a storage frame, first sliding groove plates are fixedly installed on the two sides of the storage frame, three moving plates are arranged on one sides of the first sliding groove plates from top to bottom, one side of the top moving plate is fixedly connected to one side of the first sliding groove plate, and the other side of the top moving plate is fixedly connected to the other side of the first sliding groove plate. By starting the motor, the motor drives the rotating rod to rotate, the rotating rod rotates to drive the rotating disc to rotate, the rotating disc rotates to drive the two traction rods to move towards the two sides respectively, the traction rods move to drive the bottom moving plate to move, and the moving plate moves to drive the solar panel to move. And meanwhile, a second strip-shaped frame moves to drive a pull rod to move, the pull rod moves to drive a supporting rod to move, the supporting rod moves to drive a pressing plate to move, and after the pressing plate moves, the effect of limiting a cover plate can be achieved.

The present application provides a method for calculating the satellite inertia matrix under abnormal conditions of satellite solar panel deployment. The method comprises: monitoring the deployment status of the satellite's solar panels in real time based on a preset sensor, obtaining deployment status data of the solar panels, and determining the deployment status of the solar panels based on the deployment status data; in response to the abnormality in deployment of the solar panels, obtaining a first inertia matrix of the satellite body and a second inertia matrix of the solar panels, and calculating the total inertia matrix of the satellite based on the first inertia matrix and the second inertia matrix. The present application achieves a more real-time and accurate calculation of the satellite's inertia matrix under abnormal conditions of solar panel deployment by obtaining the first inertia matrix of the satellite body and the second inertia matrix of the solar panels when an abnormality in deployment of the solar panels is detected in real time, and calculating the total inertia matrix of the satellite based on the first inertia matrix and the second inertia matrix. This improves the stability of the satellite's attitude control.

The present invention relates to the technical field of solar panel control, and particularly relates to a solar panel control method and device for quickly finding the zero position during orbit injection for rendezvous and docking. Among them, the method is applied to the control system of a spacecraft, and the method includes: after the spacecraft is injected into orbit, at a set moment, based on a preset angle range, making the solar panel rotate forward and backward, so as to start measuring the rotation angle information when the solar panel passes through the zero position sensor; performing sun-pointing control on the solar panel to continuously supply energy; when receiving the zeroing command before orbit control, based on the current rotation angle information, determining the rotation direction of the solar panel to control the solar panel to return to the zero position. Therefore, it can not only enable the solar panel to quickly find the zero position to quickly obtain effective rotation angle information, but also, when receiving the zeroing command before orbit control, according to the effective rotation angle information, enable the solar panel to quickly return to the zero position, which can meet the autonomous and rapid rendezvous and docking requirements of the spacecraft on the basis of avoiding damage to the solar panel.

The application discloses a solar sail installation rotating hinge device, which comprises a hinge body and a sail fixator. The hinge body is provided with hinge tables at both ends, the sail fixator is provided with connecting tables at both ends, the hinge tables and the connecting tables are connected through rotating joints, the sail fixator can rotate around the hinge tables, the rotating joints are sleeved with hinge torsional springs matched with the hinge tables and the connecting tables, and one connecting table is further provided with a time sequence torsional spring at the outer end. The application is fixedly installed on the side surface of a satellite structure frame and can be reliably connected with the sail when in use. Meanwhile, the rotating joints for rotating and connecting the sail are built in the hinge body, flexible rotating connection between the sail and the satellite body is realized, and the secondary expansion requirement of the sail is supported. The hinge is further provided with a time sequence control structure to prevent interference and collision in the expansion process and prevent over-expansion or under-expansion.

The invention relates to the field of spaceflight components, in particular to a high-rigidity high-torque two-degree-of-freedom sailboard driving mechanism which comprises a main support, an A-axis driving assembly, a double-axis connecting support, a B-axis driving assembly and a sailboard connecting support, the A-axis driving assembly is connected with a star through the main support, one end of the double-axis connecting support is fixedly connected with the output end of the A-axis driving assembly, and the other end of the double-axis connecting support is fixedly connected with the output end of the B-axis driving assembly; the other end of the double-shaft connecting support is fixedly connected with the B-shaft driving assembly, one end of the sailboard connecting support is fixedly connected with the output end of the B-shaft driving assembly, and the other end of the sailboard connecting support is connected with the sailboard. The A-axis driving assembly and the B-axis driving assembly are each internally provided with a motor and a harmonic gear reducer so that the torsional rigidity of the output end can be larger than or equal to 12000 Nm / rad, and the output torque can be larger than 44 Nm. And the solar panel is driven to point to the sun and the power / signal transmission function is realized.

This invention relates to a method for the active deployment of solar panels based on path planning. After the solar panel clamping release mechanism is unlocked, the initial value of the rotation angle of the tilting mechanism in the clamped state is read, and rotation path planning is performed according to the actual state of the solar panel. When the tilting mechanism starts to drive the solar panel deployment, the solar panel deployment time is timed. If the deployment process time has not reached the maximum time, the solar panel deployment is determined sequentially by calculating the rotation angle and angular velocity of the tilting mechanism, the rotation angle calculated by the potentiometer output, and continuously judging the working mode of the tilting mechanism over multiple cycles. If the deployment process time reaches the maximum time and the solar panel has been fully deployed, the solar panel deployment process ends. If the deployment process time reaches the maximum time and the solar panel has not been fully deployed, a safety protection setting is implemented. This invention is applicable to the design of active solar panel deployment modes for satellites with solar panels featuring extension rod structures and tilting mechanisms, driving the solar panels to deploy smoothly, stably, safely, and reliably.

The invention provides a zigzag mark hinge based on a shape memory material and a solar panel, and belongs to the technical field of space unfolding, the zigzag mark hinge comprises a framework unit, a driving unit and a rigid connecting part, and the framework unit comprises a fiber reinforced composite material panel; the butt-joint ends of the two fiber reinforced composite material panels are attached to each other and connected through polyimide films, the polyimide films are attached to the upper surfaces and the lower surfaces of the butt-joint ends, and preset zigzag marks are formed in the butt-joint positions; the shape memory polymer composite layers are attached to the surfaces of the framework units on the two sides of the zigzag marks, and the heating films are attached to the surfaces of the shape memory polymer composite layers so that the shape memory polymer composite layers can return to the straight state from the bent state and drive the framework units to be flattened; the zigzag mark design generates a self-adaptive nonlinear damping effect in the unfolding process, the damping effect is gradually enhanced along with the increase of the unfolding angle, the impact and vibration in the unfolding process are restrained, and the stability and controllability of the unfolding process are ensured.

The invention relates to a multi-antenna SAR (Synthetic Aperture Radar) satellite configuration and a rocket, and the multi-antenna SAR satellite configuration comprises a satellite platform, a first antenna, a second antenna, a first solar panel and a second solar panel, the peripheral side face of the satellite platform comprises a first installation face, a second installation face, a third installation face and a fourth installation face which are sequentially arranged in the circumferential direction of the satellite platform, and the first antenna is assembled on the first installation face and can be unfolded in the direction parallel to the axis of the satellite platform. The second antenna is assembled on the second installation face and can be unfolded in the direction away from the first antenna, the first solar panel and the second solar panel are installed on the end faces of the two axial ends of the satellite platform respectively and can be stacked on the third installation face in a surrounding mode, and the fourth installation face serves as a rocket assembly face. The satellite is compact in overall configuration layout, adapts to a multi-load antenna, is high in integration level, is small in envelope size, is high in rocket adaptability, can be laterally hung and arranged at the top, improves the rocket plot ratio, and can achieve one rocket with multiple satellites.

2.1. Photovoltaic device for electricity generation. An improvement on flat solar panels, which are not protected from extreme weather. The new solar collector changes its shape between a closed cone shape (Fig. 1) and an open tree shape (Fig. 2). 2.2. In the closed position (Fig. 1), the solar collector closes at night or when extreme weather approaches. The outer material (4) is durable. The solar cells (2) are protected and mounted on the inside of the sun sails (2), and the solar collector is firmly anchored to the ground (3). A frame (1) provides additional stability and serves as a support for the sun sails (2). The open solar collector (Fig. 2) mimics the shape of a tree. The sun sails are extended during daylight hours. The sun sails are attached to extendable arms (5), which in turn are attached to the mast (1). At the end of the arms (5) is a rotating joint (6) to which the sun sails are mounted.A slot (7) in the center of the solar modules is provided for the rotation (8) of the solar sails (2). The extension and rotation angle of the solar sails depends on the position of the sun. The alternative mechanical arm (Fig. 3) can be designed mechanically or as a robotic arm instead of hydraulically (D). 2.3. Several solar collectors form a configuration (solar power plant) to reduce winds and prevent damage, which is particularly interesting for use on the planet Mars with its destructive dust storms. Solar collectors can be placed, for example, in fields or in deforested rainforest areas. Agriculture, including gardens and trees, or wind turbines, can be practiced around them.

The present invention discloses an unfolding and locking mechanism for a flexible solar sail panel, which can realize the unfolding and locking of the flexible solar wing in place. The unfolding and locking mechanism for the flexible solar sail panel includes a base plate, an upper plate, a main roller, a supporting side column, a guide assembly, and a connecting rod unfolding assembly; the flexible solar wing is curled and wrapped around the main roller, one end of the flexible solar wing is fixedly connected to the main roller, and the other end is fixed to the upper plate through a clamping sheet, and the main roller is fixed to the base plate through a support arm. The guide assemblies are respectively installed on the base plate and the upper plate, and the connecting rod unfolding assembly is installed between the guide assemblies of the base plate and the upper plate; the connecting rod unfolding assembly includes a long connecting rod, a short connecting rod, and a rotating shaft frame; the guide assembly includes a guide rail seat, a guide rod, a guide slider, a guide rail positioning seat, a locking spring, and an unfolding spring. The mechanism of the present invention can realize the curling, storage and unfolding of the flexible solar wing, and the overall structure is compact and small in size, and the extension mechanism can realize the unfolding with a large extension ratio.

The invention belongs to the technical field of solar photovoltaic modules, and discloses a waterproof solar photovoltaic module high-strength fixing assembly frame which comprises a mounting frame, a supporting frame is fixedly connected to the upper end of the mounting frame, a fixing frame is rotationally connected to the upper end of the outer end of the supporting frame, and a solar panel is fixedly mounted on the inner side of the fixing frame. A cleaning mechanism is arranged at the outer end of the fixing frame, a supporting rod is slidably connected to the bottom of the fixing frame, a first motor is fixedly installed on the inner wall of the supporting frame, a threaded rod is rotatably connected to the inner wall of the supporting frame, gears are fixedly installed at the outer end of the threaded rod, and the gears are connected in a meshed mode. The solar tracker senses the inclination angle of solar rays to control the first motor to start, so that the gear rotates to drive the threaded rod to rotate, the threaded block moves oppositely, the supporting rod drives the fixing frame to rotate, the angle between the solar panel and the sun is adjusted, and the solar energy absorption rate is increased.

The application discloses a kind of lightweight high-reliability rotor position detection method and device of large hollow permanent magnet motor, belong to permanent magnet synchronous motor control technical field.The method includes: S1 in stator slot opening embedded installation 3N linear hall sensor, wherein N is positive integer and N≥1, according to slot pitch angle α Calculation common offset, 3N original signal is time shift processing, obtain 3 (N+M) reconstructed hall signal, M is integer and M≥0;S2 executes amplitude range detection and phase relationship detection, reconstructs fault signal using adjacent leading phase normal sensor signal;S3 is calculated rotor position by vector space decoupling transformation and phase extraction method;S4 upper motor controller carries out fault detection and feedback channel switching instruction, realizes system level fault tolerance.The application realizes structure lightweight, high-precision detection, sensor level fault tolerance and system level fault tolerance, is suitable for space power station solar sail etc. Motor drive system high-reliability control demand.

The invention discloses a small space debris-oriented passive capturing and disposing spacecraft, cubesat and method, solves the problems that in the prior art, small space debris cannot be captured, and an existing capturing device performs active capturing, and has the beneficial effects that the space debris is passively captured and thoroughly eliminated. According to the specific scheme, the passive grabbing and handling spacecraft for the small space debris comprises a chip satellite and a capturing assembly, a plurality of solar sails are connected to the peripheral side of the chip satellite, the chip satellite controls the bending state of the solar sails so as to control flight of the spacecraft, and the capturing assembly comprises a folding storage wall plate, a triggering platform and a bistable capturing arm; the folding storage wall plate is connected to the peripheral side of the chip satellite through the hinge, the hinge is a bent hinge and has elasticity, the triggering platform is connected with the chip satellite, and after the bistable capturing arm passes through the triggering platform, the bistable capturing arm is in a straight state when a spacecraft is in a non-working state.

The application discloses a satellite long-term sun-pointing three-axis pointing attitude design method under inter-satellite communication constraints, including the constraint conditions of comprehensively considering sun-pointing, inter-satellite communication pointing and the drastic change of sunlight conditions under low-inclination orbit, proposing a nominal expected attitude design method, a modified expected attitude design method, a transition expected attitude design method, a flip nominal expected attitude design method and a flip modified expected attitude design method, and giving an expected angular velocity calculation method of manipulation aiming at the corresponding expected attitude. The application can meet the basic condition that the satellite solar panel normal direction points to the sun, ensure the communication pointing requirements between space formation satellites at the same time, and avoid the influence of the polarity change of the satellite on the low-inclination orbit, thereby providing a stable and safe long-term sun-pointing attitude for the satellite.

An attitude control module is described for providing propellant-free attitude control and momentum desaturation to a spacecraft. The attitude control module includes at least one solar sail comprising a reflective surface for reflecting solar photons; and at least one robotic arm coupled to the at least one solar sail, said at least one robotic arm comprising at least 4 degrees of freedom for positioning and orienting the at least one solar sail relative to the spacecraft. A corresponding method for operating the attitude control module to unload excess momentum from a spacecraft is also described.

The present invention discloses a triangular prism - type modular micro - satellite configuration. It adopts a modular symmetric design, which is convenient for overall installation, can balance the center of gravity of the satellite, and is beneficial to attitude control. Based on the triangular prism structure design, it provides good stability. It adopts a multi - functional structural board design, integrating functional components with the structure, reducing the overall weight of the satellite and lowering costs. The PMI foam - filled battery pack design can reduce weight and keep the battery warm. Through the cooperation and connection of the connecting pin plates, positioning pin slots and chutes on the modules, it can be conveniently assembled and installed as well as interconnected with multiple satellites. The mutual cooperation of the movable phased - array antenna and the fixed phased - array antenna can increase the antenna coverage and maneuverability. After the solar panels are deployed, they can cover the satellite payloads to facilitate heat dissipation. Multiple satellites are interconnected to form a satellite array to meet the coverage of a larger area. Through connection around the cylindrical satellite distribution device, multi - satellite stacked launch can be achieved, reducing the satellite launch cost.

The application provides a spacecraft solar panel power regulation system and relates to the technical field of spacecraft power supply.The system comprises a detection module for acquiring telemetry data of a photovoltaic array; a calculation module for determining target control parameters of power control according to the telemetry data and generating remote control instructions according to the target control parameters; a power supply lower computer module for acquiring the global energy state of a spacecraft solar panel; determining target working modes of power control according to the global energy state in combination with the telemetry data and generating mode instructions according to the target working modes; an MPPT master control module for adjusting control parameters of power control or switching working modes of power control according to the remote control instructions or the mode instructions; and performing power control according to the telemetry data of the photovoltaic array based on the working modes and the control parameters. The application improves the management effect of the power of the spacecraft solar panel.

The present invention relates to the technical field of sailing ship navigation assistance, and discloses a solar sail folding and releasing device, comprising a base, a bracket mounted on the base for horizontal rotation, and a sail assembly mounted on the bracket for vertical rotation. The sail assembly has a horizontal sail folding position and a vertical sail folding position during rotation. The bracket comprises a rotating seat and a lifting shaft. The sail assembly is rotatably mounted on the lifting shaft. The lifting shaft has an entry position for driving the sail assembly into the rotating seat during lifting. The rotating seat has a rotating space for the sail assembly to rotate. The sail assembly rotates to the horizontal sail folding position, and the sail is retracted to maintain the stability of the hull; the lifting shaft moves up and down on the rotating seat to the entry position, and the sail assembly can rotate around the lifting shaft in the rotating space. The base can drive the rotating seat to rotate horizontally, so that the sail assembly can be flexibly rotated in three-dimensional space to receive sunlight, thereby improving the utilization rate of solar energy after the sail is folded.