Satellite attitude control simulation device air floating bearing design method and device

Abstract

The application relates to a satellite attitude control simulation device air floating bearing design method and device. The method comprises the following steps: stress analysis is performed on a satellite attitude control simulation device air floating bearing to obtain a throttle air inlet layout angle and a ball socket wrapping angle; the total area of an air outlet is calculated according to the ball socket wrapping angle, the air film thickness and a pre-set ball socket radius, the total area of an air inlet is equal to the total area of the air outlet, the number of throttle air inlets is calculated according to the total area of the air inlet, the throttle air inlet radius and the air film thickness; the air floating ball radius is determined according to the ball socket radius, the air film pressure is calculated by using the pre-set bearing capacity and the air floating ball radius, and the air floating bearing is designed by using the throttle air inlet layout angle, the ball socket wrapping angle, the number of throttle air inlets, the air floating ball radius and the air film pressure. The method can quickly realize air floating bearing design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spacecraft simulation device design, in particular to a satellite attitude control simulation device air floating bearing design method and device. BACKGROUND

[0002] The satellite attitude control simulation device is a device for simulating the satellite on-orbit attitude action on the ground and verifying the satellite coordinate polarity. The satellite is carried on the attitude control simulation device platform, a certain thickness of air film is formed between the air floating ball and the ball socket on the platform, the whole carrying platform is suspended, the interference of friction force is eliminated, and the satellite friction-free attitude control test is realized.

[0003] However, the current air floating bearing design method only uses one throttling air hole to provide the air pressure source. Due to the non-uniformity of air flow out of the air outlet, uneven force is easily generated, the air floating process is difficult to level, and the air hammer phenomenon occurs, so the suspension cannot be realized. Other methods only realize the design of two-axis air floating bearings, and cannot meet the three-polarity coordinate verification. For the design of three-axis air floating bearings, there are many design parameters, the analysis process is complex, the calculation process is long and complicated, and the parameter verification is a relatively long period, with many variables in between. SUMMARY

[0004] Therefore, it is necessary to provide a satellite attitude control simulation device air floating bearing design method and device capable of quickly realizing the air floating bearing design in view of the above technical problems.

[0005] A satellite attitude control simulation device air floating bearing design method, the method comprises:

[0006] The force analysis of the satellite attitude control simulation device air floating bearing is carried out, the throttling air inlet is assumed to be a stable force point, the bearing force is respectively valued, the special angle between the angles is decomposed to determine the layout angle of the throttling air inlet and the wrapping angle of the ball socket;

[0007] The air pressure between the ball socket and the air floating ball is adjusted until the bearing force of the air floating critical value is not less than the total weight of the air floating platform, the air film is formed between the air floating ball and the ball socket, and the air floating starts. The gap between the edge of the ball socket and the air floating ball serves as the air outlet. When the ball socket and the air floating ball are in air floating balance, the thickness of the air film between the ball socket and the air floating ball is obtained, and the total area of the air outlet is calculated according to the wrapping angle of the ball socket, the thickness of the air film and the pre-set radius of the ball socket;

[0008] The total area of the air outlet and the air source pressure are used to calculate the air outlet gas mass flow. When the ball socket and the air floating ball are in air floating balance, the total area of the air inlet is equal to the total area of the air outlet according to the relationship that the air inlet gas mass flow is equal to the air outlet gas mass flow;

[0009] The number of throttle air inlets is obtained by calculation according to the total area of air inlets, the radius of throttle air inlets and the gas film thickness;

[0010] The gas film pressure is calculated by using the preset bearing capacity and the radius of the gas floating ball according to the radius of the ball socket, and the gas floating bearing is designed by using the layout angle of the throttle air inlet, the wrapping angle of the ball socket, the number of throttle air inlets, the radius of the gas floating ball and the gas film pressure.

[0011] In one of the embodiments, the layout angle of the throttle air inlet and the wrapping angle of the ball socket are determined by force decomposition of the special angle of the assigned bearing capacity, including:

[0012] The layout angle of the throttle air inlet is set to 30° and the wrapping angle of the ball socket is set to 60° by force decomposition of the special angle, and the special angle includes 30°, 45° and 60°.

[0013] In one of the embodiments, the total area of air outlets is calculated according to the wrapping angle of the ball socket, the gas film thickness and the preset radius of the ball socket, including

[0014] The total area of air outlets is calculated according to the wrapping angle of the ball socket, the gas film thickness and the preset radius of the ball socket

[0015]

[0016] Wherein, R1 represents the radius of the ball socket, h represents the gas film thickness, and R represents the radius of the ball socket opening circle.

[0017] In one of the embodiments, the outlet gas mass flow is calculated by using the total area of air outlets and the gas source pressure, including:

[0018] The outlet gas mass flow is calculated by using the total area of air outlets and the gas source pressure

[0019]

[0020] Wherein, Q is the mass flow, P S is the gas source pressure, S 出 is the total area of air outlets, C D is the flow correction coefficient, is the coefficient, and T and R represent different sizes of thermodynamic temperature.

[0021] In one of the embodiments, the gas film thickness h = 10 μm.

[0022] In one of the embodiments, the number of throttle air inlets is obtained by calculation according to the total area of air inlets, the radius of throttle air inlets and the gas film thickness, including;

[0023] The number of throttle air inlets is obtained by calculation using the total area of air inlets, the radius of throttle air inlets and the thickness of air film

[0024] n=S 进 / S 孔

[0025] S 孔 =πr 2

[0026] S 进 =S 出

[0027] wherein r represents the radius of throttle air inlets, n represents the number of throttle air outlets, S 进 represents the total area of air inlets, S 孔 represents the area of a single throttle air inlet.

[0028] In one embodiment, the air film pressure is calculated using the preset bearing force and the radius of the air floating ball, including:

[0029] The air film pressure calculated using the preset bearing force and the radius of the air floating ball is

[0030] p=Δp-Pa

[0031]

[0032] S1=π(R1COS30°) 2

[0033] wherein Pa is the atmospheric pressure, S1 is the force area of the air film surface, R1 represents the radius of the ball socket, and W is the bearing force.

[0034] A satellite attitude control simulation device air floating bearing design device, characterized in that the device comprises:

[0035] A ball socket wrapping angle calculation module is configured to perform force analysis on the satellite attitude control simulation device air floating bearing, assume the throttle air inlets as stable force points, assign special angle included angles to the bearing forces respectively, perform force decomposition to determine the throttle air inlet layout angle and the ball socket wrapping angle.

[0036] An air outlet total area calculation module is configured to calculate the air floating critical value bearing force, until the air floating critical value bearing force is not less than the total weight of the air floating platform, the air film is formed between the air floating ball and the ball socket and the air floating starts, the gap appears between the ball socket edge and the air floating ball and serves as the air outlet, the air film thickness between the ball socket and the air floating ball is obtained when the ball socket and the air floating ball are in air floating balance, and the air outlet total area is calculated according to the ball socket wrapping angle, the air film thickness and the preset ball socket radius.

[0037] The throttling air inlet quantity calculation module is configured to calculate the outlet gas mass flow rate by using the total outlet area and the gas source pressure, and when the spherical cavity and the air float ball are in air float balance, the total inlet area is equal to the total outlet area according to the relationship that the inlet gas mass flow rate is equal to the outlet gas mass flow rate; the throttling air inlet quantity is calculated according to the total inlet area, the throttling air inlet radius and the gas film thickness;

[0038] The air float bearing design module is configured to determine the air float ball radius according to the spherical cavity radius, calculate the gas film pressure by using the preset bearing capacity and the air float ball radius, and design the air float bearing by using the throttling air inlet layout angle, the spherical cavity wrapping angle, the throttling air inlet quantity, the air float ball radius and the gas film pressure.

[0039] The above-mentioned air float bearing design method and device for the satellite attitude control simulation device first obtain the spherical cavity wrapping angle through stress analysis of the air float bearing of the satellite attitude control simulation device, then the air pressure between the spherical cavity and the air float ball is adjusted until the air float critical value bearing capacity is not less than the total weight of the air float platform, the air film is formed between the air float ball and the spherical cavity and the air float is started, the gap appears between the spherical cavity edge and the air float ball and serves as the outlet, the gas film thickness between the air float ball and the spherical cavity is obtained when the air float ball and the spherical cavity are in air float balance, the total outlet area is calculated according to the spherical cavity wrapping angle, the gas film thickness and the preset spherical cavity radius, the outlet gas mass flow rate is calculated by using the total outlet area and the gas source pressure, when the air float ball and the spherical cavity are in air float balance, the total inlet area is equal to the total outlet area according to the relationship that the inlet gas mass flow rate is equal to the outlet gas mass flow rate, the throttling air inlet quantity is calculated according to the total inlet area, the throttling air inlet radius and the gas film thickness, the air float ball radius is determined according to the spherical cavity radius, the gas film pressure is calculated by using the preset bearing capacity and the air float ball radius, and the air float bearing is designed by using the throttling air inlet layout angle, the spherical cavity wrapping angle, the throttling air inlet quantity, the air float ball radius and the gas film pressure. The throttling air inlet layout angle, the spherical cavity wrapping angle, the throttling air inlet quantity, the air float ball radius and the gas film pressure are calculated by designing the spherical cavity, the air float bearing is designed by using the throttling air inlet layout angle, the spherical cavity wrapping angle, the throttling air inlet quantity, the air float ball radius and the gas film pressure, the design process is simplified, the related parameters of the air float bearing design are quickly obtained, and the time and manufacturing cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 FIG. 1 is a flowchart of an air float bearing design method for a satellite attitude control simulation device in one embodiment;

[0041] Figure 2 FIG. 3 is a stress analysis diagram in one embodiment;

[0042] Figure 3 FIG. 5 is an air float state analysis diagram in one embodiment;

[0043] Figure 4 Figure 1 is a structural block diagram of a device for designing an air bearing of a satellite attitude control simulation device according to another embodiment. DETAILED DESCRIPTION

[0044] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0045] In one embodiment, as shown in Figure 1, a method for designing an air bearing of a satellite attitude control simulation device is provided, comprising the following steps: Figure 1

[0046] Step 102, force analysis is performed on the air bearing of the satellite attitude control simulation device, the throttling inlet is assumed to be a stable force point, the bearing capacity is respectively assigned to special angle included angles for force decomposition to determine the layout angle of the throttling inlet and the wrapping angle of the socket.

[0047] As shown in Figure 2, the throttling outlet is assumed to be a stable force point, the bearing capacity is respectively assigned to special angle included angles for force decomposition, and by comparing the normal force of the special angle, it can be obtained that the moment is maximum when the throttling outlet and the socket center axis form an angle of 30°, and the force receiving surface is maximum when the socket wrapping socket center axis forms an angle of 60°. In order to meet the three degrees of freedom motion, it is necessary to explain that the right angle is not used as a reference. The special angles include 30°, 45° and 60°. Figure 2

[0048] Step 104, the air pressure between the socket and the air float ball is adjusted until the critical value of the air float bearing capacity is not less than the total weight of the air float platform, the air film is formed between the air float ball and the socket and the air float is started, the gap appears between the edge of the socket and the air float ball and serves as the outlet, the air film thickness between the socket and the air float ball is obtained when the socket and the air float ball are in air float balance, and the total area of the outlet is calculated according to the wrapping angle of the socket, the air film thickness and the pre-set radius of the socket.

[0049] The air pressure between the socket and the air float ball is adjusted until the critical value of the air float bearing capacity is not less than the total weight of the air float platform, the air film is formed between the air float ball and the socket and the air float is started, the gap appears between the edge of the socket and the air float ball and serves as the outlet, the air float force and the air float platform gravity form a stable balance, and the air film between the air float ball and the socket is also relatively stable, and the air film thickness is 10 μm, which achieves the air float effect.

[0050] ​​Step 106, the total area of the gas outlet and the gas source pressure are used to calculate the gas mass flow rate, when the ball socket and the gas ball are in the gas floating balance, the total area of the inlet is equal to the total area of the outlet according to the relationship that the gas mass flow rate is equal to the inlet gas mass flow rate; according to the total area of the inlet, the throttle inlet radius and the gas film thickness, the number of throttle inlets is calculated.

[0051] According to the relationship that the gas mass flow rate is equal to the inlet gas mass flow rate when the ball socket and the gas ball are in the gas floating balance, the total area of the inlet is equal to the total area of the outlet, and the number of throttle inlets is obtained by the throttle inlet radius and the total area of the outlet.

[0052] Step 108, the gas floating ball radius is determined according to the ball socket radius, the gas film pressure is calculated by using the pre-set bearing capacity and the gas floating ball radius, and the gas floating bearing is designed by using the throttle inlet layout angle, the ball socket wrapping angle, the number of throttle inlets, the gas floating ball radius and the gas film pressure.

[0053] The initial state between the gas ball and the ball socket is a sealed perfect fit state, so the design radius of the gas ball is equal to the radius of the ball socket, the gas film pressure is calculated according to the pre-set bearing capacity and the gas floating ball radius, and the gas floating bearing is designed according to the gas film surface pressure, which can ensure the implementation effect and the protection of the equipment in the operation process, finally the gas floating bearing is designed by using the throttle inlet layout angle, the ball socket wrapping angle, the number of throttle inlets, the gas floating ball radius and the gas film pressure.

[0054] The method comprises the following steps: firstly, stress analysis is performed on the gas bearing of the satellite attitude control simulation device to obtain a ball socket wrapping angle; then, air pressure between the ball socket and the gas ball is adjusted until the critical value of the gas bearing capacity is not less than the total weight of the gas bearing platform, the gas film is formed between the ball socket and the gas ball, and the gas bearing is started, a gap is formed between the edge of the ball socket and the gas ball and used as an air outlet, the gas film thickness between the ball socket and the gas ball is obtained when the ball socket and the gas ball are in the gas bearing balance, the total area of the air outlet is calculated according to the ball socket wrapping angle, the gas film thickness and the pre-set ball socket radius, the air outlet gas mass flow is calculated according to the total area of the air outlet and the gas source pressure, the total area of the air inlet is equal to the total area of the air outlet according to the relationship that the air outlet gas mass flow is equal to the air inlet gas mass flow when the ball socket and the gas ball are in the gas bearing balance, and the number of the throttling air inlets is calculated according to the total area of the air inlet, the throttling air inlet radius and the gas film thickness; the gas ball radius is determined according to the ball socket radius, the gas film pressure is calculated according to the pre-set bearing capacity and the gas ball radius, and the gas bearing is designed according to the throttling air inlet layout angle, the ball socket wrapping angle, the number of the throttling air inlets, the gas ball radius and the gas film pressure.

[0055] In one of the embodiments, the special angle included angle of the bearing capacity is respectively valued, stress decomposition is performed, the throttling air inlet layout angle and the ball socket wrapping angle are determined, and the throttling air inlet layout angle is 30° and the ball socket wrapping angle is 60°.

[0056] The special angle included angle of the bearing capacity is respectively valued, stress decomposition is performed, and the normal force of the special angle is used to compare and set the throttling air inlet layout angle to 30° and the ball socket wrapping angle to 60°. The special angle includes 30°, 45° and 60°.

[0057] In one of the embodiments, the total area of the air outlet is calculated according to the ball socket wrapping angle, the gas film thickness and the pre-set ball socket radius, and the total area of the air outlet is

[0058] The total area of the air outlet is calculated according to the ball socket wrapping angle, the gas film thickness and the pre-set ball socket radius, and the total area of the air outlet is

[0059]

[0060] Wherein, R1 represents the ball socket radius, h represents the gas film thickness, and R represents the ball socket opening circle radius.

[0061] In one of the embodiments, the air outlet gas mass flow is calculated according to the total area of the air outlet and the gas source pressure, and the air outlet gas mass flow is calculated according to the total area of the air outlet and the gas source pressure.

[0062] The mass flow rate of the outlet gas is calculated using the total area of ​​the outlet and the gas source pressure.

[0063]

[0064] Where Q is the mass flow rate, P S For the gas source pressure, S 出 C represents the total area of ​​the air outlet. D This is the flow correction factor. T and R are coefficients, representing different thermodynamic temperatures.

[0065] In one embodiment, the gas film thickness h = 10 μm.

[0066] In a specific embodiment, such as Figure 3 As shown in the air flotation state analysis, when no air pressure is applied, the space between the ball socket and the air flotation ball can be considered a closed microenvironment. When air pressure is applied, the microenvironment begins to increase in pressure until the critical air flotation value W ≥ the total weight G of the air flotation platform is reached. An air film forms between the air flotation ball and the ball socket, and air flotation begins. A gap appears between the edge of the ball socket and the air flotation ball, which serves as an air outlet. When the mass flow rate Q of the throttling air inlet is... 进 =Outlet mass flow rate Q 出 At this time, the buoyancy force and the gravity of the air-floating platform form a steady-state equilibrium, and a relatively stable air film is also formed between the air-floating ball and the ball socket. When the thickness of the air film is h=10μm, the air-floating effect is achieved.

[0067] The above state analysis shows that when the air flotation steady state is reached, the mass flow rate at the throttling inlet is...

[0068] Q 进 =Outlet mass flow rate Q 出 Substituting into the formula, the relationship S is calculated. 进 =S 出 It can be seen that the inlet and outlet mass flow rate balance relationship is related to the gas inlet and outlet areas; therefore, the design mass flow rate calculation formula is:

[0069]

[0070] Where Q is the mass flow rate, measured in kilograms per second (kg / s); P S S is the air source pressure; S is the inlet (outlet) area; C D This is the flow correction factor; The value is a coefficient; the default ambient temperature is 20℃, with a corresponding thermodynamic temperature of T=293K and R=287J / Kg*K.

[0071] In one embodiment, the number of throttling inlets is calculated based on the total area of ​​the inlets, the radius of the throttling inlets, and the thickness of the air film, including:

[0072] The number of throttle air inlets is calculated by using the total area of air inlets, the radius of throttle air inlets and the thickness of air film, and is

[0073] n = S 进 / S 孔

[0074] S 孔 = πr 2

[0075] S 进 = S 出

[0076] wherein r represents the radius of throttle air inlets, n represents the number of throttle air inlets, S 进 represents the total area of air inlets, S 孔 represents the area of a single throttle air inlet.

[0077] In a specific embodiment, according to the equilibrium relationship of air floating state, the mass flow of gas at the air outlet is equal to the mass flow of gas at the air inlet, and the equivalent simplification is that the total area of the air outlet is equal to the total area of the air inlet.

[0078] In one of the embodiments, the film pressure is calculated by using the pre-set bearing force and the radius of air floating ball, including:

[0079] The film pressure is calculated by using the pre-set bearing force and the radius of air floating ball, and is

[0080] p = Δp - Pa

[0081]

[0082] S1 = π(R1 COS 30°) 2

[0083] wherein Pa is the atmospheric pressure, S1 is the force area of the film surface, R1 represents the radius of the ball socket, and W is the bearing force.

[0084] It should be understood that, although each step in the flowchart of Figure 1 is shown in sequence according to the indication of the arrow, these steps are not necessarily executed in sequence according to the indication of the arrow. Unless explicitly stated in this article, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, Figure 1 at least part of the steps in may include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these sub-steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or sub-steps or stages of other steps.

[0085] In one embodiment, as shown in Figure 4 The satellite attitude control simulation device air floating bearing design device comprises a ball socket wrapping angle calculation module 402, a total gas outlet area and gas film thickness calculation module 404, a throttling gas inlet number calculation module 406, and an air floating bearing design module 408, wherein:

[0086] The ball socket wrapping angle calculation module 402 is used for stress analysis of the satellite attitude control simulation device air floating bearing, assumes the throttling gas inlet as a stable stress point, decomposes the stress according to the special angle of the assigned value of the bearing capacity, determines the throttling gas inlet layout angle and the ball socket wrapping angle, and calculates the ball socket wrapping angle.

[0087] The total gas outlet area calculation module 404 is used for air pressure between the ball socket and the air floating ball, until the air floating critical value bearing capacity is not less than the total weight of the air floating platform, the air film is formed between the air floating ball and the ball socket and the air floating starts, the gap appears between the ball socket edge and the air floating ball and serves as the gas outlet, the gas film thickness between the ball socket and the air floating ball is obtained when the ball socket and the air floating ball are in air floating balance, the total gas outlet area is calculated according to the ball socket wrapping angle, the gas film thickness and the pre-set ball socket radius.

[0088] The throttling gas inlet number calculation module 406 is used for calculating the outlet gas mass flow by using the total gas outlet area and the gas source pressure, obtaining the total inlet area equal to the total gas outlet area according to the relationship that the outlet gas mass flow is equal to the inlet gas mass flow when the ball socket and the air floating ball are in air floating balance, and calculating the throttling gas inlet number according to the total inlet area, the throttling gas inlet radius and the gas film thickness.

[0089] The air floating bearing design module 408 is used for determining the air floating ball radius according to the ball socket radius, calculating the gas film pressure by using the pre-set bearing capacity and the air floating ball radius, and designing the air floating bearing by using the throttling gas inlet layout angle, the ball socket wrapping angle, the throttling gas inlet number, the air floating ball radius and the gas film pressure.

[0090] The specific limitations of the satellite attitude control simulation device air floating bearing design device can be referred to the limitations of the satellite attitude control simulation device air floating bearing design method in the foregoing, which will not be described herein. The modules in the satellite attitude control simulation device air floating bearing design device can be all or partially realized by software, hardware and combinations thereof. The modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so as to be called and executed by the processor to perform the operations corresponding to the modules.

[0091] Any combination of the technical features in the above embodiments can be made, and for the sake of brevity, not all possible combinations are described above, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0092] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for designing an air bearing of a satellite attitude control simulation device, characterized in that, The method comprises: The force analysis is carried out on the air floating bearing of the satellite attitude control simulation simulation device, the throttling air inlet is assumed to be a stable force point, the bearing capacity is respectively valued, the special angle included angle is decomposed to determine the throttling air inlet layout angle and the ball socket wrapping angle; The air floating critical value bearing capacity is not less than the total weight of the air floating platform, the air film is formed between the ball socket and the air floating ball, and the air floating is started, the gap is formed between the ball socket edge and the air floating ball and is used as the air outlet, the air film thickness between the ball socket and the air floating ball is obtained when the ball socket and the air floating ball are in the air floating balance, the total area of the air outlet is calculated according to the ball socket wrapping angle, the air film thickness and the pre-set ball socket radius; The total area of the air outlet and the gas source pressure are used for calculation to obtain the air outlet gas mass flow, the total area of the air inlet is equal to the total area of the air outlet according to the relationship that the air outlet gas mass flow is equal to the air inlet gas mass flow when the ball socket and the air floating ball are in the air floating balance; The total area of the air inlet, the throttling air inlet radius and the air film thickness are used for calculation to obtain the number of throttling air inlets; The ball socket radius is determined, the air film pressure is calculated according to the pre-set bearing capacity and the air floating ball radius, and the air floating bearing is designed according to the throttling air inlet layout angle, the ball socket wrapping angle, the number of throttling air inlets, the air floating ball radius and the air film pressure.

2. The method of claim 1, wherein, The force analysis is carried out on the air floating bearing of the satellite attitude control simulation simulation device, the throttling air inlet is assumed to be a stable force point, the bearing capacity is respectively valued, the special angle included angle is decomposed to determine the throttling air inlet layout angle and the ball socket wrapping angle; The force analysis is carried out on the air floating bearing of the satellite attitude control simulation simulation device, the throttling air inlet is assumed to be a stable force point, the bearing capacity is respectively valued, the special angle included angle is decomposed to determine the throttling air inlet layout angle and the ball socket wrapping angle; 3. The method of claim 2, wherein, The total area of the air outlet is calculated according to the ball socket wrapping angle, the air film thickness and the pre-set ball socket radius, and the total area of the air outlet is Wherein, R1 represents the ball socket radius, h represents the air film thickness, and R represents the ball socket opening circle radius. The total area of the air outlet and the gas source pressure are used for calculation to obtain the air outlet gas mass flow, and the total area of the air outlet and the gas source pressure are used for calculation to obtain the air outlet gas mass flow 4. The method of claim 1, wherein, The total area of the air outlet and the gas source pressure are used for calculation to obtain the air outlet gas mass flow, and the total area of the air outlet and the gas source pressure are used for calculation to obtain the air outlet gas mass flow The air film thickness h = 10 μm. where Q is the mass flow rate, P S is the pressure of the gas source, S 出 is the total area of the outlet, C D is the flow correction factor, is the coefficient, T and R represent different sizes of thermodynamic temperature.

5. The method according to any one of claims 1 to 4, characterized in that, The total area of the air inlet, the throttling air inlet radius and the air film thickness are used for calculation to obtain the number of throttling air inlets, and the total area of the air inlet, the throttling air inlet radius and the air film thickness are used for calculation to obtain the number of throttling air inlets 6. The method of claim 3, wherein, The total area of the air inlet, the throttling air inlet radius and the air film thickness are used for calculation to obtain the number of throttling air inlets, and the total area of the air inlet, the throttling air inlet radius and the air film thickness are used for calculation to obtain the number of throttling air inlets The air film pressure is calculated according to the pre-set bearing capacity and the air floating ball radius, and the air film pressure is calculated according to the pre-set bearing capacity and the air floating ball radius n = S 进 / S 孔 S 孔 ＝πr 2 S 进 = S 出 wherein r represents the radius of the throttle intake, n represents the number of throttle outlets, S 进 represents the total area of the intakes, S 孔 represents the area of a single throttle intake.

7. The method of claim 1, wherein, The air film pressure is calculated according to the pre-set bearing capacity and the air floating ball radius, and the air film pressure is calculated according to the pre-set bearing capacity and the air floating ball radius Pa is the atmospheric pressure, S1 is the air film surface force area, R1 represents the ball socket radius, and W is the bearing capacity. The device comprises: S1 = π (R1 COS 30°) 2 ​ 8. A satellite attitude control simulation facility air bearing design apparatus, characterized by, ​ The ball socket wrapping angle calculation module is used for force analysis of the air floating bearing of the satellite attitude control simulation and emulation device, assumes that the throttling air inlet is a stable force point, respectively assigns special angle included angles to force decomposition to determine the throttling air inlet layout angle and the ball socket wrapping angle; The air outlet total area calculation module is used for air floating between the ball socket and the air floating ball, until the air floating critical value bearing force is not less than the air floating platform total weight, the air film is formed between the air floating ball and the ball socket and the air floating is started, the gap appears between the ball socket edge and the air floating ball and is used as the air outlet, the air film thickness between the ball socket and the air floating ball is obtained when the ball socket and the air floating ball are in the air floating balance, the air outlet total area is calculated according to the ball socket wrapping angle, the air film thickness and the pre-set ball socket radius; The throttling air inlet number calculation module is used for calculating the outlet gas mass flow rate by using the air outlet total area and the gas source pressure, obtaining the inlet total area equal to the outlet total area according to the relationship that the outlet gas mass flow rate is equal to the inlet gas mass flow rate, and calculating the throttling air inlet number according to the inlet total area, the throttling air inlet radius and the air film thickness; The air floating bearing design module is used for determining the air floating ball radius according to the ball socket radius, calculating the air film pressure by using the pre-set bearing force and the air floating ball radius, and designing the air floating bearing by using the throttling air inlet layout angle, the ball socket wrapping angle, the throttling air inlet number, the air floating ball radius and the air film pressure.

Images