A high-precision optical positioning system for wind tunnel balance

Abstract

The present invention is a high-precision optical positioning system for a wind tunnel balance. The present invention relates to the technical field of optical positioning for static calibration of a wind tunnel balance. The system of the present invention comprises: a support system, a sliding system, a measuring system, a balance system and a host computer; the support system is used to support the sliding system and the measuring system, and the sliding system supports the translational displacement of the measuring system in the X and Z coordinate directions, so that the measuring system and the balance system maintain an ideal measuring distance, and the measuring system measures the real-time position change of the balance system to achieve measurement of tiny deformations during the calibration of the balance. The high-precision optical positioning system for a wind tunnel balance of the present invention realizes controllable adjustment of multiple degrees of freedom, realizes the precise measurement of the laser displacement meter to the greatest extent, guides the reset system to perform precise posture control, and realizes static calibration of the high-precision body axis system of the balance, which is beneficial to improving the calibration precision and accuracy of the balance.

Description

Technical Field

[0001] The invention relates to the technical field of static calibration optical positioning of a wind tunnel balance, and is a high-precision optical positioning system for a wind tunnel balance. Background Art

[0002] Wind tunnel balance can decompose aerodynamic forces and moments along three mutually perpendicular coordinate axes and measure them accurately. Wind tunnel balances are divided into two categories according to the nature of force measurement: static force balances and dynamic force balances, which measure the aerodynamic forces acting on the model during steady flight and unsteady flight respectively. Static force balances have many forms such as internal and external types, and are divided into mechanical, strain, piezoelectric and magnetic suspension types according to the structure and measurement principle. Mechanical balances are mainly used in low-speed wind tunnels, and the most common types are tensioned wire type and hard frame type.

[0003] Wind tunnel model testing is one of the important means to understand the performance of aircraft and reduce the risk and cost of aircraft development during the development of aerospace vehicles. The wind tunnel balance is a high-precision measuring device that directly senses and measures the aerodynamic forces and torques acting on the six degrees of freedom of the model. Wind tunnel balance technology involves balance materials, structural design analysis, processing and manufacturing technology, strain sensor technology, and balance calibration technology. Generally, balance calibration can be divided into static calibration and dynamic calibration. Static calibration is based on the balance calibration principle, using a balance calibration device, and following a certain calibration method to establish the relationship between the balance measurement signal and the aerodynamic load, that is, the process of obtaining the balance formula and other performance parameters of the balance. Dynamic calibration is the process of further verifying the performance of the balance in a wind tunnel using a standard model based on static calibration. Since wind tunnel balance calibration determines the efficiency of balance calibration and the accuracy of the balance formula, and is related to the accuracy of the model aerodynamic data measurement in the future application of the balance, balance calibration is considered to be the most important link in the balance design process.

[0004] Since the 1940s, wind tunnel balance calibration has developed from the use of a single-component manually loaded balance calibration table to a six-component automatic balance calibration machine, gradually forming the hardware devices and logical methods commonly used in wind tunnel balance calibration today. In order to meet the higher requirements for the refinement of wind tunnel tests in the development of high-performance aerospace vehicles, with the development of science and technology, foreign countries have had new understandings and developments in wind tunnel balance calibration technology. Not so, since the 1940s, wind tunnel balance calibration has developed from the use of a single-component manually loaded balance calibration table to a six-component automatic balance calibration machine, gradually forming the hardware devices and logical methods commonly used in wind tunnel balance calibration today. In order to meet the higher requirements for the refinement of wind tunnel tests in the development of high-performance aerospace vehicles, with the development of science and technology, foreign countries have had new understandings and developments in wind tunnel balance calibration technology.

[0005] The wind tunnel balance is an important device for wind tunnel force measurement test. The balance needs to be statically calibrated before use to obtain the balance calibration formula. During the wind tunnel test, the balance signal output is substituted into the balance calibration formula to solve the force. The static calibration of the balance is divided into two types: earth axis calibration and body axis calibration. The earth axis calibration is relatively simple and does not consider the slight deformation of the balance during the loading process. The body axis calibration assumes that the slight deformation of the balance during the loading process cannot be ignored, and the actual position and posture of the balance needs to be measured in real time and fed back to the reset system. Therefore, it is necessary to improve the measurement accuracy and real-time performance of the positioning device during the calibration process to improve the balance calibration index. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a high-precision optical positioning system for a wind tunnel balance.

[0007] The present invention provides a high-precision optical positioning system for a wind tunnel balance. The present invention provides the following technical solutions:

[0008] A high-precision optical positioning system for a wind tunnel balance, the system comprising: a support system, a sliding system, a measuring system, a balance system and a host computer;

[0009] The support system is used to support the sliding system and the measuring system. The sliding system supports the translational displacement of the measuring system in the X and Z coordinate directions, so that the measuring system and the balance system maintain an ideal measuring distance. The measuring system measures the real-time position change of the balance system, thereby realizing the measurement of tiny deformations during the balance calibration process.

[0010] Preferably, the support system includes a mounting plate and a support frame. The mounting plate is connected to a pre-buried independent foundation to ensure the overall stability of the system. The support frame is welded from steel sections to prevent large deformation during system operation.

[0011] Preferably, the sliding system includes a slide plate, a slide rail, and a block, and is divided into two levels: a primary slide plate and a secondary slide plate, a primary slide rail and a secondary slide rail, a primary block and a secondary block, wherein the primary level provides sliding freedom in the Z direction of the balance coordinate system, and the secondary level provides sliding freedom in the X direction of the balance coordinate system.

[0012] Preferably, the measuring system comprises a laser controller, a connecting seat, a support arm, a T-beam and a laser measuring device. The connecting seat is connected to the laser controller. The real-time position change of the balance system is measured by the laser measuring device. The signal is processed by the laser controller and transmitted to the host computer. The host computer controls the balance posture change, and the balance posture always remains fixed.

[0013] The T-beam can rotate 180° around the root axis, and the support arm can rotate 360° around the connecting seat.

[0014] Preferably, the laser measuring device comprises a locking cap, a laser connecting rod, a first adjusting rod, a second adjusting rod, a fixed support plate, a rotating support plate and a laser displacement meter; the laser displacement meter directly measures the distance to the balance system, the laser connecting rod is connected to the T-beam and is locked by a locking cap;

[0015] The laser displacement meter and the laser connecting rod are adjusted with three degrees of freedom through the first adjustment rod and the second adjustment rod, which are the axial direction of the adjustment rod and two rotations around the axis; the laser displacement meter is installed on the rotating support plate, and the rotating support plate can rotate freely around the fixed support plate. The overall adjustment of the laser measuring device realizes the precise measurement of the laser displacement meter.

[0016] Preferably, the balance system includes a balance, a loading sleeve, a loading head and a laser reflector; the balance is connected to the loading head through the loading sleeve, and the external load acts on the loading sleeve and is transmitted to the balance. The balance senses the external load and will produce a slight deformation, thereby driving the loading head and the laser reflector to produce a slight deformation;

[0017] The laser reflector is used to receive laser irradiation and reflection from the laser displacement meter, acting as a target, transmitting the posture changes of the balance to the measurement system, and then to the host computer for reset control.

[0018] Preferably, the laser reflection plate is used to receive laser irradiation and reflection from the laser displacement meter, and acts as a target to transmit the posture change of the balance to the measurement system, and then to the host computer for reset control.

[0019] A static calibration method for a high-precision optical positioning system of a wind tunnel balance, the method comprising the following steps:

[0020] Adjust the secondary slide to a suitable position along the primary slide rail and tighten it with the top screw to ensure the stability of the secondary slide;

[0021] Adjust the connecting seat to a suitable position along the secondary slide rail and tighten it with the top screw to ensure the stability of the connecting seat;

[0022] Rotate the support arm and the T-beam to make the T-beam and the laser reflector coincide with each other; adjust the position and angle of the laser connecting rod, the first adjustment rod, and the second adjustment rod to make the laser displacement meter face the laser reflector directly;

[0023] Fine-tune the rotating support plate to keep the distance between the laser displacement meter lens and the laser reflector plate within the effective range;

[0024] The laser controller transmits the measurement values ​​of six groups of laser displacement meters to the host computer, which is solved by the reset system and the balance posture is adjusted.

[0025] A computer-readable storage medium stores a computer program, which is executed by a processor to implement a static calibration method for a high-precision optical positioning system of a wind tunnel balance.

[0026] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, a static calibration method for a high-precision optical positioning system of a wind tunnel balance is implemented.

[0027] The present invention has the following beneficial effects:

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The high-precision optical positioning system of the wind tunnel balance of the present invention realizes controllable adjustment of multiple degrees of freedom, realizes accurate measurement of the laser displacement meter to the greatest extent, guides the reset system to perform accurate posture control, realizes static calibration of the high-precision body axis system of the balance, and is beneficial to improving the calibration precision and accuracy of the balance.

[0030] The present invention installs the laser displacement meter on the rotating support plate, and the rotating support plate can rotate freely around the fixed support plate. The overall adjustment of the laser measuring device can realize the accurate measurement of the laser displacement meter to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0033] Figure 2 is a schematic diagram of the support system of the present invention;

[0034] Figure 3 is a schematic diagram of the sliding system of the present invention;

[0035] Figure 4 is a schematic diagram of the measurement system of the present invention;

[0036] Figure 5 It is a schematic diagram of the laser measuring device of the present invention;

[0037] Figure 6 It is a schematic diagram of the balance system of the present invention. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] The present invention is described in detail below in conjunction with specific embodiments. Specific embodiment one:

[0044] according to Figures 1 to 6 As shown, the specific optimization technical solution adopted by the present invention to solve the above technical problems is: the present invention relates to a high-precision optical positioning system for a wind tunnel balance.

[0045] A high-precision optical positioning system for a wind tunnel balance, a support system, a sliding system, a measuring system, a balance system and a host computer;

[0046] The support system is used to support the sliding system and the measuring system. The sliding system supports the translational displacement of the measuring system in the X and Z coordinate directions, so that the measuring system and the balance system maintain an ideal measuring distance. The measuring system measures the real-time position change of the balance system, thereby realizing the measurement of tiny deformations during the balance calibration process. Specific embodiment 2:

[0048] The difference between the second embodiment of the present invention and the first embodiment is that:

[0049] The support system includes a mounting plate and a support frame. The mounting plate is connected to a pre-buried independent foundation to ensure the overall stability of the system. The support frame is welded from steel sections to prevent large deformation during system operation. Specific embodiment three:

[0051] The difference between the third embodiment of the present invention and the second embodiment is that:

[0052] The sliding system includes a slide plate, a slide rail, and a block, which is divided into two levels: a primary slide plate and a secondary slide plate, a primary slide rail and a secondary slide rail, a primary block and a secondary block. The primary level provides the sliding freedom in the Z direction of the balance coordinate system, and the secondary level provides the sliding freedom in the X direction of the balance coordinate system. Specific embodiment four:

[0054] The difference between the fourth embodiment of the present invention and the third embodiment is that:

[0055] The measuring system includes a laser controller, a connecting base, a support arm, a T-beam and a laser measuring device. The connecting base is connected to the laser controller. The real-time position change of the balance system is measured by the laser measuring device. The signal is processed by the laser controller and transmitted to the host computer. The host computer controls the balance posture change, and the balance posture always remains fixed.

[0056] The T-beam can rotate 180° around the root axis, and the support arm can rotate 360° around the connecting seat. Specific embodiment five:

[0058] The difference between the fifth embodiment of the present invention and the fourth embodiment is that:

[0059] The laser measuring device includes a locking cap, a laser connecting rod, a first adjusting rod, a second adjusting rod, a fixed support plate, a rotating support plate and a laser displacement meter; the laser displacement meter directly measures the distance between the laser connecting rod and the balance system, and the laser connecting rod is connected to the T-beam and locked by a locking cap;

[0060] The laser displacement meter and the laser connecting rod are adjusted with three degrees of freedom through the first adjustment rod and the second adjustment rod, which are the axial direction of the adjustment rod and two rotations around the axis; the laser displacement meter is installed on the rotating support plate, and the rotating support plate can rotate freely around the fixed support plate. The overall adjustment of the laser measuring device realizes the precise measurement of the laser displacement meter. Specific embodiment six:

[0062] The difference between the sixth embodiment of the present invention and the fifth embodiment is that:

[0063] The balance system includes a balance, a loading sleeve, a loading head and a laser reflector; the balance is connected to the loading head through the loading sleeve, and the external load acts on the loading sleeve and is transmitted to the balance. The balance senses the external load and will produce a slight deformation, which in turn drives the loading head and the laser reflector to produce a slight deformation;

[0064] The laser reflector is used to receive laser irradiation and reflection from the laser displacement meter, acting as a target, transmitting the posture changes of the balance to the measurement system, and then to the host computer for reset control. Specific embodiment seven:

[0066] The difference between the seventh embodiment of the present invention and the sixth embodiment is that:

[0067] The laser reflector is used to receive laser irradiation and reflection from the laser displacement meter, acting as a target, transmitting the posture changes of the balance to the measurement system, and then to the host computer for reset control. Specific embodiment eight:

[0069] The difference between the eighth embodiment of the present invention and the seventh embodiment is that:

[0070] A static calibration method for a high-precision optical positioning system of a wind tunnel balance, the method comprising the following steps:

[0071] Adjust the secondary slide to a suitable position along the primary slide rail and tighten it with the top screw to ensure the stability of the secondary slide;

[0072] Adjust the connecting seat to a suitable position along the secondary slide rail and tighten it with the top screw to ensure the stability of the connecting seat;

[0073] Rotate the support arm and the T-beam to make the T-beam and the laser reflector coincide with each other; adjust the position and angle of the laser connecting rod, the first adjustment rod, and the second adjustment rod to make the laser displacement meter face the laser reflector directly;

[0074] Fine-tune the rotating support plate to keep the distance between the laser displacement meter lens and the laser reflector plate within the effective range;

[0075] The laser controller transmits the measurement values ​​of six groups of laser displacement meters to the host computer, which is solved by the reset system and the balance posture is adjusted. Specific embodiment nine:

[0077] The difference between the ninth embodiment of the present invention and the eighth embodiment is that:

[0078] The present invention provides a computer-readable storage medium on which a computer program is stored. The program is executed by a processor to implement a static calibration method for a high-precision optical positioning system of a wind tunnel balance.

[0079] The method comprises the following steps:

[0080] Adjust the secondary slide to a suitable position along the primary slide rail and tighten it with the top screw to ensure the stability of the secondary slide;

[0081] Adjust the connecting seat to a suitable position along the secondary slide rail and tighten it with the top screw to ensure the stability of the connecting seat;

[0082] Rotate the support arm and the T-beam to make the T-beam and the laser reflector coincide with each other; adjust the position and angle of the laser connecting rod, the first adjustment rod, and the second adjustment rod to make the laser displacement meter face the laser reflector directly;

[0083] Fine-tune the rotating support plate to keep the distance between the laser displacement meter lens and the laser reflector plate within the effective range;

[0084] The laser controller transmits the measurement values ​​of six groups of laser displacement meters to the host computer, which is solved by the reset system and the balance posture is adjusted. Specific embodiment ten:

[0086] The difference between the tenth embodiment of the present invention and the ninth embodiment is that:

[0087] The present invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements a static calibration method for a high-precision optical positioning system of a wind tunnel balance when executing the computer program.

[0088] The method comprises the following steps:

[0089] Adjust the secondary slide to a suitable position along the primary slide rail and tighten it with the top screw to ensure the stability of the secondary slide;

[0090] Adjust the connecting seat to a suitable position along the secondary slide rail and tighten it with the top screw to ensure the stability of the connecting seat;

[0091] Rotate the support arm and the T-beam to make the T-beam and the laser reflector coincide with each other; adjust the position and angle of the laser connecting rod, the first adjustment rod, and the second adjustment rod to make the laser displacement meter face the laser reflector directly;

[0092] Fine-tune the rotating support plate to keep the distance between the laser displacement meter lens and the laser reflector plate within the effective range;

[0093] The laser controller transmits the measurement values ​​of six groups of laser displacement meters to the host computer, which is solved by the reset system and the balance posture is adjusted. Specific embodiment eleven:

[0095] The difference between the eleventh embodiment of the present invention and the tenth embodiment is that:

[0096] The invention provides a high-precision optical positioning system for a wind tunnel balance. The high-precision optical positioning system for a wind tunnel balance is mainly composed of four parts: a support system, a sliding system, a measuring system, and a balance system, which work together to achieve measurement of tiny deformations during balance calibration.

[0097] The support system is mainly composed of two parts: the mounting plate and the support frame. Its main function is to support the sliding system and the measuring system. The mounting plate is connected to the pre-buried independent foundation to ensure the overall stability of the system and reduce interference from external factors. The support frame is welded from steel sections and has great rigidity to prevent large deformation during system operation.

[0098] The sliding system is mainly composed of slide plates, slide rails, blocks, etc. It is divided into two levels, including primary slide plates and secondary slide plates, primary slide rails and secondary slide rails, primary blocks and secondary blocks. The primary level provides the sliding freedom in the Z direction of the balance coordinate system, and the secondary level provides the sliding freedom in the X direction of the balance coordinate system. Its main function is to support the translational displacement of the measurement system in the X and Z coordinate directions, so that the measurement system and the balance system maintain an ideal measurement distance.

[0099] The measurement system is mainly composed of: laser controller, connection seat, support arm, T-beam and laser measuring device, etc. Its main function is to use the laser measuring device to measure the real-time position change of the balance system, process the signal through the laser controller and transmit it to the host computer, and the host computer controls the balance posture change to ensure that the balance posture always remains fixed. The T-beam can rotate 180° around the root axis, and the support arm can rotate 360° around the connection seat. The double degree of freedom rotation enables the measurement system to meet the measurement needs of balances of different types and sizes, and improve the overall adaptability of the measurement system.

[0100] The laser measuring device consists of a locking cap, a laser connecting rod, a first adjusting rod, a second adjusting rod, a fixed support plate, a rotating support plate and a laser displacement meter. The core device is the laser displacement meter, which directly measures the distance to the balance system. The laser connecting rod is connected to the T-beam and locked with a locking cap. The laser displacement meter and the laser connecting rod are adjusted in three degrees of freedom through two-stage adjusting rods A and B, which are the axial direction of the adjusting rod (fine adjustment) and two rotations around the axis (±90°). The laser displacement meter is installed on the rotating support plate, and the rotating support plate can rotate freely around the fixed support plate. The overall adjustment of the laser measuring device can achieve the most accurate measurement of the laser displacement meter.

[0101] There are six sets of laser measuring devices, which measure the displacement of the balance in the X direction (3 sets), Y direction (2 sets) and Z direction (1 set) of the coordinate system. The six sets of measurement values ​​are transmitted to the host computer and then solved by the reset system to realize the posture control of the balance.

[0102] The balance system mainly consists of a balance, a loading sleeve, a loading head and a laser reflector. The balance is connected to the loading head through the loading sleeve. The external load acts on the loading sleeve and is transmitted to the balance. The balance senses the external load and will produce a slight deformation, which in turn drives the loading head and the laser reflector to produce a slight deformation. The laser reflector is used to receive the laser irradiation and reflection of the laser displacement meter, and acts as a target, transmitting the posture change of the balance to the measurement system, and then to the host computer for reset control.

[0103] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code including one or more executable instructions for implementing the steps of a custom logic function or process, and the scope of the preferred embodiment of the present invention includes other implementations, in which the functions may not be performed in the order shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by a person skilled in the art of the art to which the embodiments of the present invention belong. The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as a sequenced list of executable instructions for implementing the logic function, and may be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection having one or N wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM).In addition, the computer readable medium can even be paper or other suitable medium on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other medium, then editing, interpreting or processing in other suitable ways as necessary, and then storing it in a computer memory. It should be understood that the various parts of the present invention can be implemented with hardware, software, firmware, or a combination thereof. In the above-mentioned embodiment, N steps or methods can be implemented with software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented with hardware, as in another embodiment, any one of the following technologies known in the art or their combination can be used to implement: a discrete logic circuit with a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit with a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0104] The above is only a preferred implementation of a high-precision optical positioning system for a wind tunnel balance. The protection scope of a high-precision optical positioning system for a wind tunnel balance is not limited to the above embodiments. All technical solutions under this idea belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, several improvements and changes without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-precision optical positioning system for a wind tunnel balance, characterized by: The system comprises: a support system, a sliding system, a measuring system, a balance system and a host computer; The support system is used to support the sliding system and the measuring system. The sliding system supports the translational displacement of the measuring system in the X and Z coordinate directions, so that the measuring system and the balance system maintain an ideal measuring distance. The measuring system measures the real-time position change of the balance system, thereby realizing the measurement of small deformations during the balance calibration process. The support system includes a mounting plate and a support frame. The mounting plate is connected to the pre-buried independent foundation to ensure the overall stability of the system. The support frame is welded from steel sections to prevent large deformation during system operation. The sliding system includes a slide plate, a slide rail, and a block, which is divided into two levels: a primary slide plate and a secondary slide plate, a primary slide rail and a secondary slide rail, a primary block and a secondary block, wherein the primary level provides the sliding freedom in the Z direction of the balance coordinate system, and the secondary level provides the sliding freedom in the X direction of the balance coordinate system; The measuring system includes a laser controller, a connecting base, a support arm, a T-beam and a laser measuring device. The connecting base is connected to the laser controller. The real-time position change of the balance system is measured by the laser measuring device. The signal is processed by the laser controller and transmitted to the host computer. The host computer controls the balance posture change so that the balance posture always remains fixed. The T-beam can rotate 180° around the root axis, and the support arm can rotate 360° around the connecting seat; The laser measuring device includes a locking cap, a laser connecting rod, a first adjusting rod, a second adjusting rod, a fixed support plate, a rotating support plate and a laser displacement meter; the laser displacement meter directly measures the distance between the laser connecting rod and the balance system, and the laser connecting rod is connected to the T-beam and locked by the locking cap; The laser displacement meter and the laser connecting rod are adjusted with three degrees of freedom through the first adjustment rod and the second adjustment rod, which are the axial direction of the adjustment rod and two rotations around the axis; the laser displacement meter is installed on the rotating support plate, and the rotating support plate can rotate freely around the fixed support plate. The overall adjustment of the laser measuring device realizes the accurate measurement of the laser displacement meter; The balance system includes a balance, a loading sleeve, a loading head and a laser reflector; the balance is connected to the loading head through the loading sleeve, and the external load acts on the loading sleeve and is transmitted to the balance. The balance senses the external load and will produce a slight deformation, which in turn drives the loading head and the laser reflector to produce a slight deformation; The laser reflector is used to receive laser irradiation and reflection from the laser displacement meter, acting as a target, transmitting the posture changes of the balance to the measurement system, and then to the host computer for reset control.

2. A static calibration method for a high-precision optical positioning system of a wind tunnel balance, the method being implemented based on a high-precision optical positioning system of a wind tunnel balance according to claim 1, and characterized in that: The method comprises the following steps: Adjust the secondary slide to a suitable position along the primary slide rail and tighten it with the top screw to ensure the stability of the secondary slide; Adjust the connecting seat to a suitable position along the secondary slide rail and tighten it with the top screw to ensure the stability of the connecting seat; Rotate the support arm and the T-beam to make the T-beam and the laser reflector coincide with each other; adjust the position and angle of the laser connecting rod, the first adjustment rod, and the second adjustment rod to make the laser displacement meter face the laser reflector directly; Fine-tune the rotating support plate to keep the distance between the laser displacement meter lens and the laser reflector plate within the effective range; The laser controller transmits the measurement values ​​of six groups of laser displacement meters to the host computer, and the reset system performs calculations and adjusts the balance posture.

3. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method according to claim 2.

4. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: The method of claim 2 is implemented when the processor executes the computer program.

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