A method for measuring and adjusting coaxiality between rotor and stator in real time

Abstract

The application discloses a method for measuring and adjusting coaxiality between a rotor and a stator in real time. In the assembling process of an aero-engine, the radial position of the assembled stator in a later process needs to be adjusted to ensure the coaxiality with the axis of the positioned rotor. The application realizes the function of measuring and adjusting the coaxiality of the stator relative to the axis of the rotor in real time by using sensor technology and computer technology, and improves the accuracy and efficiency of measuring and adjusting the coaxiality.

Description

Technical Field

[0001] This invention belongs to the field of aero-engines, and specifically relates to a method for real-time measurement and adjustment of the coaxiality between rotor and stator, used to determine the radial position of stator components when rotor and stator are assembled together. Background Technology

[0002] During the installation of stator and rotor in an aero-engine, the coaxiality of the stator relative to the rotor axis needs to be measured and adjusted to ensure smooth rotor rotation during operation. After the coaxiality of some stators and rotor has been ensured in the previous process, the coaxiality of the subsequently installed stators relative to the already positioned rotor axis needs to be measured and adjusted in the subsequent process when installing other stators.

[0003] Since the design and manufacturing state of aero engines can already guarantee the parallelism of the assembly between stator components, ensuring the coaxiality of the stator relative to the rotor axis is equivalent to ensuring the concentricity of a certain radial section of the stator relative to the rotor axis.

[0004] Traditional measurement methods involve installing a specialized fixture on a pre-positioned rotor, creating a rigid connection between the fixture and the rotor. A mechanical gauge (commonly a dial indicator or micrometer) is mounted on a gauge holder, with its dial head contacting the radial measurement surface (usually a high-precision machined cylindrical surface like a bearing or bearing support), and a pre-applied pressure. Because the measured cylindrical cross-section is not concentric with the rotor axis, the gauge head contracts or extends as the rotor rotates, and the pointer on the mechanical dial indicates the current radial runout value. After recording the radial runout values ​​at eight evenly distributed points around the rotor, the direction and amount of stator eccentricity relative to the rotor can be analyzed from the eight data points. Theoretically, when the eight radial runout values ​​are equal, the measured cylindrical cross-section is concentric with the rotor axis (i.e., the stator is coaxial with the rotor). However, in actual engine assembly, equal radial runout values ​​in eight evenly distributed directions are not required; specific requirements for coaxiality or eccentricity ranges are given.

[0005] Using traditional measurement methods, coaxiality measurement data is obtained once per rotor revolution. If the coaxiality of the stator relative to the rotor does not meet design requirements, the stator casing needs to be adjusted radially. The mechanical dial indicator is rotated to the direction requiring adjustment, indicating the adjustment amount, and then the adjustment is performed. After adjustment, the coaxiality result is not immediately known; the rotor needs to rotate another revolution to obtain the next coaxiality measurement data. This process of measurement-adjustment-measurement continues until the coaxiality is finally adjusted to within the design requirements.

[0006] Traditional methods for measuring and adjusting coaxiality have the following two drawbacks:

[0007] 1. The stator casing is not an ideal rigid body. When the stator moves radially, it is often accompanied by elastic deformation, which causes the cross-section to be displaced in other directions besides the direction indicated by the mechanical gauge. Operators cannot accurately estimate the adjustment amount and direction.

[0008] 2. During the adjustment process, the coaxiality of the stator relative to the rotor cannot be displayed in real time. It is necessary to repeat the measurement-adjustment-measurement process multiple times, which takes a long time and is highly dependent on the experience of the workers. Summary of the Invention

[0009] The purpose of this invention is to provide a method for real-time measurement and adjustment of coaxiality between rotor and stator, so as to solve the problems of traditional measurement and adjustment methods that cannot display the coaxiality of rotor and stator in real time and cannot accurately estimate the adjustment amount and direction.

[0010] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0011] A method for real-time measurement of coaxiality between a rotor and a stator involves fixing several displacement sensors to the rotor or its extension line, with the intersection of the extension lines of the displacement measurement directions of the displacement sensors on the rotor axis; determining the coordinates of the measuring points of each displacement sensor; calculating the measured coordinates of the center of the measuring cross section of the adjustable stator from the coordinates of the measuring points; calculating the error between the target coordinates and the measured coordinates of the measuring cross section of the adjustable stator; if the error is less than the allowable value, the coaxiality is qualified; otherwise, it is unqualified.

[0012] Preferably, the zero-position reflector and optical transceiver are installed on the adjustable stator and rotor respectively to determine the 0-angular displacement of the system. Then, the system angular displacement of each displacement sensor is calculated, and then the coordinates of the measuring points of each displacement sensor are calculated.

[0013] Preferably, the coordinates of the measuring point of the nth displacement sensor are:

[0014] (x n ,y n )=(Rncosα n Rnsinα n (Equation 1)

[0015] in,

[0016] R - Measurement cross-sectional radius of the adjustable stator; Ln - Measured radial runout value of displacement sensor n; α n - Displacement sensor n measures the system's angular displacement in the direction of measurement, Ln max - The maximum radial runout value measured by the displacement sensor n in one revolution, Ln min - The minimum radial runout value measured by the displacement sensor n in one revolution.

[0017] Preferably, given the target coordinates (x) p ,y p ) and the allowable range of coaxiality ε, when At that time, the coaxiality was qualified.

[0018] Preferably, three displacement sensors are used. The step of calculating the coordinates (x0, y0) of the center of the measuring cross section of the adjustable stator in real time from the coordinates of the measuring points of the three displacement sensors includes:

[0019] The equation for the circle of the cross-section measured by the adjustable stator in a two-dimensional Cartesian coordinate system is as follows:

[0020] (x-x0) 2 +(y-y0) 2 =R 2 (Equation 2)

[0021] Substituting the coordinates of the three displacement sensor measuring points into Equation 2, we get:

[0022]

[0023] From ①-② in Equation 3, we get:

[0024]

[0025] From ②-③ in Equation 3, we get:

[0026]

[0027] Combined equations 4 and 5:

[0028]

[0029] Let 2(x² - x₁) = A₁, 2(y² - y₁) = B₁,

[0030] 2(x3-x2)=A2, 2(y3-y2)=B2, Substituting these set coefficients into Equation 5, we get:

[0031]

[0032] Solving for the coordinates of the center (x0, y0), we get:

[0033]

[0034] This invention also provides a method for adjusting the coaxiality between rotating stators based on the above-mentioned measurement method, comprising the following steps: A computer calculates the center of the measured cross-section of the adjustable stator in real time and provides real-time visual feedback to the operator; the operator moves the radial position of the adjustable stator according to the coordinates and position displayed on the computer in real time, until the center of the measured cross-section of the adjustable stator (x0, y0) and the target coordinate (x0, y0) are reached. p ,y p The coaxiality allowable range ε ​​satisfies When the computer determines that the coaxiality is acceptable, the measurement and adjustment process ends.

[0035] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the program to implement the above-described method for real-time measurement of coaxiality between rotor and stator.

[0036] The present invention also provides a non-transitory computer-readable storage medium, characterized in that the non-transitory computer-readable storage medium stores computer instructions, the computer instructions being used to cause the computer to execute the above-described method for real-time measurement of coaxiality between rotating and stationary elements.

[0037] Compared with existing technologies, the present invention offers the following advantages: Traditional methods analyze coaxiality by installing special fixtures on the rotor and using mechanical gauges to measure and record the radial runout of the stator's cross-section in eight evenly distributed directions. Coaxiality can only be determined once per revolution, and real-time measurement is not possible during adjustment. Furthermore, factors such as stator casing deformation make it impossible to accurately estimate the adjustment amount and direction. The traditional method also has a long time cycle for measuring and adjusting coaxiality and relies heavily on operator experience. The present invention's real-time measurement and adjustment method involves a computer-based preliminary calculation and analysis during the first measurement stage (rotor rotation only) and real-time measurement of the stator's coaxiality relative to the rotor without rotor rotation. Moreover, since the cross-section remains undeformed, stator casing deformation does not affect the accuracy of the measurement and adjustment process. The method of the present invention significantly shortens the time cycle for measuring and adjusting stator coaxiality and improves the accuracy of determining the adjustment direction and amount during the adjustment process. Attached Figure Description

[0038] Figure 1 This is a schematic diagram showing the angle between the three displacement sensors and the optical transceiver fixed on a special fixture according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the angular displacement of a system consisting of three displacement sensors and an optical transceiver according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the extreme point measurement of displacement sensor n in one revolution according to an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram illustrating the real-time measurement principle of the three displacement sensors in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram illustrating the principle of calculating the coordinates of the three displacement sensor measuring points in an embodiment of the present invention.

[0043] Figure 6 This is a schematic diagram illustrating the principle of calculating the center of a circle using the coordinates of three measuring points in an embodiment of the present invention.

[0044] Figure 7 The process technology solution of this embodiment of the invention is shown in the flowchart. Detailed Implementation

[0045] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0046] Example

[0047] like Figure 1 , 2 As shown, the system includes: fixed fulcrum 1, fixed fulcrum 2, adjustable stator, rotor shaft, displacement sensor 1, displacement sensor 2, displacement sensor 3, zero-position reflector, optical signal sensor, drive motor, angular displacement sensor, and computer.

[0048] The drive motor is rigidly connected to the rotor and can drive it to rotate at a constant speed. The angular displacement sensor is also rigidly connected to the drive motor and can measure the angular displacement of the engine rotor in real time, transmitting the measured signal to the computer. The optical transceiver, displacement sensor 1, displacement sensor 2, and displacement sensor 3 are mounted on the rotor or its extension line and do not move relative to the rotor, rotating with it around its axis. The displacement measurement direction extensions of displacement sensor 1, displacement sensor 2, and displacement sensor 3 intersect at a point on the rotor axis. The measurement directions of the optical transceiver, displacement sensor 1, displacement sensor 2, and displacement sensor 3 are all perpendicular to the engine rotor axis. The zero-position reflector is fixed at a specific orientation on the adjustable stator. When the optical transceiver emits and receives signals, it transmits the zero-position signal to the computer, which marks this orientation as the system zero position.

[0049] When the engine rotor rotates, displacement sensors 1, 2, and 3 measure the radial runout of the adjustable stator cross-section. When the engine rotor is stationary and the radial position of the adjustable stator is adjusted, displacement sensors 1, 2, and 3 measure the radial displacement of the adjustable stator cross-section in three directions. The measured signals are transmitted to the computer.

[0050] Please refer to Figure 1 , 2 In the first stage of application of this invention, the drive motor drives the engine rotor to rotate at a constant speed for one revolution. When the optical transceiver rotates to the zero-position reflector, it receives a signal and transmits it to the computer. The angular displacement at this moment is defined as the system's zero angular displacement. The measurement direction extensions of the three displacement sensors intersect at a point on the engine rotor axis, denoted as point o. The relative angles between the measurement directions of the three displacement sensors and the signal transmission / reception directions of the optical transceiver are determined during the design and manufacture of the special fixture and can be obtained by measuring the dimensions of the special fixture. Therefore, the system angular displacement expression based on the measurement directions of the three displacement sensors can be obtained:

[0051] α1=α0-β1+π (Equation 1)

[0052] α2=α0-β2+π (Equation 2)

[0053] α3=α0-β3 (Equation 3)

[0054] In equations (1) to (3),

[0055] α0 - System angular displacement in the direction of signal transmission and reception of the optical signal sensor;

[0056] α1 - The system angular displacement is measured in the direction of displacement sensor 1;

[0057] α2 - Displacement sensor 2 measures the system's angular displacement in the direction of measurement;

[0058] α3 - Displacement sensor 3 measures the system's angular displacement in the direction of measurement;

[0059] β1 - Angle between the measurement direction of displacement sensor 1 and the signal transmission / reception direction of optical signal sensor;

[0060] The angle between the measurement direction of β2-displacement sensor 2 and the signal transmission and reception direction of optical signal sensor;

[0061] The angle between the measurement direction of the β3-displacement sensor 3 and the signal transmission and reception direction of the optical signal sensor.

[0062] Please refer to Figure 3 In the first stage of measurement, this invention collects radial runout data after any displacement sensor rotates one revolution. The computer then correlates the radial runout signals collected by the displacement sensors with the system angular displacement in the current sensor measurement direction. Taking displacement sensor n (n = 1, 2, 3) as an example, after displacement sensor n rotates one revolution, a maximum radial runout Ln will inevitably be obtained. max There is also a minimum radial runout Ln min In extreme cases, when Ln max =Ln min In theory, the rotor and stator are coaxial. However, in practical applications, this situation almost never occurs. Even when approaching this extreme state, the radial orientation of the stator casing can be easily adjusted to disrupt this extreme state. When Ln max ≠Ln min If there are an infinite number of measurement points around the circumference, the line connecting the maximum and minimum radial runout points will pass through the center of the measured cross-section. In practical applications, the number of measurement points around the circumference cannot be infinite. The speed of the drive motor can be set according to actual needs to ensure a sufficient number of measurement points around the circumference to meet the coaxiality measurement accuracy requirements. With a constant number of measurement points per unit time, a slower drive motor speed allows for more measurement points around the circumference, resulting in higher calculation accuracy. Alternatively, a higher-performance displacement sensor can be selected to collect more data per unit time.

[0063] By coinciding the polar coordinate system and the two-dimensional Cartesian coordinate system, with the origin o representing the rotor axis and point p representing the center of the measurement cross-section of the adjustable stator, the following relationship can be obtained:

[0064] 2R=2Ln st +Ln max +Ln min (Equation 4)

[0065] Transforming equation (4) yields:

[0066]

[0067] In equations 4 and 5,

[0068] R - The measuring cross-sectional radius of the adjustable stator can be obtained through measurement;

[0069] Ln st- The structural length of the static part of displacement sensor n, which is an unknown quantity;

[0070] Ln max - The maximum radial runout value measured when displacement sensor n rotates one week;

[0071] Ln min - The minimum radial runout value measured when displacement sensor n rotates one week.

[0072] For the same adjustable stator, as long as the measurement cross-section does not deform, R is a fixed value. When the relative position of the displacement sensor with respect to the rotor axis is not adjusted, Ln st is also a fixed value. Because fixed value + fixed value = fixed value, from Equation 5, it can be obtained that for the same displacement sensor, when adjusting the radial position of the adjustable stator, is a fixed value. Therefore, for the same displacement sensor, only one Ln max and Ln min need to be measured when the adjustable stator is in any position to calculate

[0073] Please refer to Figure 4 , and the following relationship can be obtained from the actual measurement state principle of 3 sensors:

[0074] ′

[0075] R = L1 st + L1 + L1 = L2 st + L2 - L2′ = L3 st + L3 + L3′ (Equation 6)

[0076] For the convenience of expression and calculation, define the symbol of Ln′ (n = 1, 2, 3), and the definition is as follows:

[0077] (1) When Ln st + LnvR, Ln′ > 0;

[0078] ′

[0079] (2) When Ln st + Ln = R, Ln = 0;

[0080] ′

[0081] (3) When Ln st + Ln < R, Ln < 0.

[0082] Then Equation 6 can be uniformly expressed as:

[0083] R = Ln st + Ln - Ln′ (Equation 7)

[0084] Combined equations 5 and 7:

[0085]

[0086] Solving equation 8, we get:

[0087]

[0088] In equations 6 to 9,

[0089] R - The measuring cross-sectional radius of the adjustable stator can be obtained through measurement;

[0090] Ln - Measured radial runout value of displacement sensor n (n = 1, 2, 3);

[0091] ′

[0092] Ln - The displacement difference between the target position and the actual position of the measured cross section of the adjustable stator in the measurement direction of the displacement sensor n; Ln st - The length of the static part of the displacement sensor n is an unknown quantity;

[0093] Ln max - The maximum radial runout value measured by the displacement sensor n in one revolution;

[0094] Ln min - The minimum radial runout value measured by the displacement sensor n in one revolution;

[0095] Please refer to Figure 5 The coordinates of the three displacement sensor measuring points were calculated:

[0096] (x n ,y n )=(Rncosα n Rnsinα n (Equation 10)

[0097] Please refer to Figure 4 , 5 The following relationship can be obtained:

[0098] Rn = Ln st +Ln (Formula 11)

[0099] Combined problems 5 and 11:

[0100]

[0101] Solve for Rn in Equation 12 and remove the unknown Ln. st have to:

[0102]

[0103] Substituting the transformed form of Equation 9 into Equation 13, we get:

[0104] Rn=Ln′+R (Equation 14)

[0105] Substituting Equation 14 into Equation 10, we obtain the expression for the sensor measurement point coordinates:

[0106] (x n ,y n )=((Ln′+R)cosα n ,(Ln′+R)sina n (Equation 15)

[0107] In equations 10 to 15,

[0108] (x n ,y n - Coordinates of the measuring point of displacement sensor n;

[0109] R - The measuring cross-sectional radius of the adjustable stator can be obtained through measurement;

[0110] Rn - Distance between the measuring point of displacement sensor n and the rotor axis;

[0111] Ln - Measured radial runout value of displacement sensor n (n = 1, 2, 3);

[0112] ′

[0113] Ln - The displacement difference between the target position and the actual position of the measured cross section of the adjustable stator in the measurement direction of the displacement sensor n; Ln st - The length of the static part of the displacement sensor n is an unknown quantity;

[0114] Ln max - The maximum radial runout value measured by the displacement sensor n in one revolution;

[0115] Ln min - The minimum radial runout value measured by the displacement sensor n in one revolution;

[0116] α n - The displacement sensor n measures the system's angular displacement in the direction of measurement.

[0117] Please refer to Figure 6 In the second stage of measurement, the drive motor and engine rotor stop rotating and remain stationary. Based on the principle that three points determine a circle, the coordinates (x0, y0) of the center of the measured cross section of the adjustable stator are calculated in real time from the coordinates of the measuring points of the three displacement sensors.

[0118] The equation for the circle of the cross-section measured by the adjustable stator in a two-dimensional Cartesian coordinate system is as follows:

[0119] (x-x0) 2+(y-y0) 2 =R 2 (Equation 16)

[0120] Substituting the coordinates of the three displacement sensor measuring points into Equation 16, we get:

[0121]

[0122] From ①-② in Equation 17, we get:

[0123]

[0124] From ②-③ in Equation 17, we get:

[0125]

[0126] Combined Forms 18 and 19:

[0127]

[0128] Let 2(x² - x₁) = A₁, 2(y² - y₁) = B₁,

[0129] 2(x3-x2)=A2, 2(y3-y2)=B2, Substituting these set coefficients into Equation 20, we get:

[0130]

[0131] Solving for the coordinates of the center (x0, y0), we get:

[0132]

[0133] Given a target coordinate (x) p ,y p (The target coordinates can be any coordinate allowed within the measurement range), and the coaxiality allowable range ε ​​is given. Displayed in real-time on the computer. Figure 6 The interface shown is defined when At that time, the coaxiality was qualified.

[0134] Please refer to Figure 7 The process technology solution of the present invention is designed as follows:

[0135] 1. Use a special fixture to connect and fix the engine rotor, three displacement sensors, and optical transceiver. Install a zero-position reflector at a specific location on the adjustable stator of the engine to provide the computer with the 0 angular displacement of the measurement system. Connect the drive motor, angular displacement sensors, and engine rotor.

[0136] 2. First stage of measurement: The drive motor drives the engine rotor to rotate one revolution, and each displacement sensor determines the maximum radial runout Ln. max With minimum radial runout Ln min The constant can then be calculated. Once the optical transceiver rotates to the zero-position reflector, transmitting and receiving a signal once is sufficient to determine the zero angular displacement point of the system and calculate the angular displacement α of each displacement sensor's measurement direction line within the system. n (n = 1, 2, 3).

[0137] 3. Second stage of measurement: The drive motor and engine rotor stop rotating and remain stationary. At this time, the system angular displacement α of the three displacement sensors is measured. n Fixed and unchanging. In computers, through... The center of the adjustable stator's cross-section is calculated in real time and the results are displayed and fed back to the operator in real time.

[0138] 4. Measurement-Adjustment Stage: Based on the real-time coordinates and position displayed on the computer, the operator moves the radial position of the adjustable stator until the center of the measuring cross-section of the adjustable stator (x0, y0) and the target coordinates (x0, y0) are aligned. p ,y p The coaxiality allowable range ε ​​satisfies When the computer determines that the coaxiality is acceptable, the measurement and adjustment process ends.

[0139] This embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the method for real-time measurement of coaxiality between the rotor and stator.

[0140] This embodiment also provides a non-transitory computer-readable storage medium that stores computer instructions for causing a computer to execute the method for real-time measurement of coaxiality between rotors and stators.

[0141] The methods described in one or more embodiments of this specification can be executed by a single device, such as a computer or server. The methods of this embodiment can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the methods described in one or more embodiments of this specification, and the multiple devices will interact with each other to complete the method.

[0142] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0143] For ease of description, the above apparatus is described in terms of function, divided into various modules. Of course, when implementing one or more embodiments of this specification, the functions of each module can be implemented in one or more software and / or hardware.

[0144] The apparatus described above is used to implement the corresponding methods in the foregoing embodiments and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0145] An electronic device hardware structure may include: a processor, a memory, an input / output interface, a communication interface, and a bus. The processor, memory, input / output interface, and communication interface are interconnected internally via the bus.

[0146] The processor can be implemented using a general-purpose CPU, microprocessor, application-specific integrated circuit, or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0147] The memory can be implemented in the form of ROM, RAM, static storage devices, dynamic storage devices, etc. The memory can store the operating system and other applications. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory and called and executed by the processor.

[0148] Input / output interfaces are used to connect input / output modules to enable information input and output. Input / output modules can be configured as components within a device or connected externally to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.

[0149] The communication interface is used to connect the communication module to enable communication and interaction between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0150] A bus is a pathway that transmits information between various components of a device, such as processors, memory, input / output interfaces, and communication interfaces.

[0151] Although the above-described device only shows a processor, memory, input / output interface, communication interface, and bus, in practice, the device may include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may include only the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0152] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

Claims

1. A method for real-time measurement of coaxiality between rotating stators, characterized in that, Fix three displacement sensors on the rotor or the extension line of the rotor, and the intersection point of the extension lines of the displacement measurement directions of the displacement sensors is on the rotor axis; determine the measuring point coordinates of each displacement sensor; calculate the actually measured coordinates of the center of the measuring cross-section of the adjustable stator from the measuring point coordinates; calculate the error between the target coordinates and the actually measured coordinates of the measuring cross-section of the adjustable stator. If the error is less than the allowable value, the coaxiality is qualified, otherwise it is unqualified; among them, the coordinates of the center of the measuring cross-section of the adjustable stator are calculated in real time from the measuring point coordinates of the three displacement sensors The steps of The equation for the circle of the cross-section measured by the adjustable stator in a two-dimensional Cartesian coordinate system is as follows: (Equation 2); Substituting the coordinates of the three displacement sensor measuring points into Equation 2, we get: (Equation 3); From ①-② in Equation 3, we get: (Equation 3); From ②-③ in Equation 3, we get: (Equation 4); Combined equations 4 and 5: (Equation 5); set up , , ; , , Substituting these set coefficients into Equation 5, we get: (Formula 6); Solve for the coordinates of the center of the circle ,have to: (Equation 7).

2. The method for real-time measurement of coaxiality between rotating and stating elements according to claim 1, characterized in that, The zero-position reflector and optical transceiver are installed on the adjustable stator and rotor respectively to determine the 0 angular displacement of the system. Then, the system angular displacement of each displacement sensor is calculated, and then the coordinates of the measuring points of each displacement sensor are calculated.

3. The method for real-time measurement of coaxiality between rotating and stating elements according to claim 1, characterized in that, The coordinates of the measuring point of the nth displacement sensor are: (Equation 1); in, ; -Measurement cross-sectional radius of the adjustable stator -Measured radial runout value from displacement sensor n - The displacement sensor n measures the system's angular displacement in the direction of measurement. - The maximum radial runout value measured by the displacement sensor n in one revolution. - The minimum radial runout value measured by the displacement sensor n in one revolution.

4. The method for real-time measurement of coaxiality between rotating and stating elements according to claim 1, characterized in that, Given target coordinates and coaxiality allowable range ,when At that time, the coaxiality was qualified.

5. A method for adjusting coaxiality between rotors and stators based on any one of claims 1-4, characterized in that, The computer analyzes and calculates the center of the adjustable stator's cross-section in real time and provides real-time visual feedback to the operator. Based on the coordinates and position displayed on the computer, the operator moves the adjustable stator radially until it reaches the center of the cross-section. Target coordinates Coaxiality allowable range satisfy When the computer determines that the coaxiality is acceptable, the measurement and adjustment process ends.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the method for real-time measurement of coaxiality between rotors and stators as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium stores computer instructions for causing the computer to perform the method for real-time measurement of coaxiality between rotors and stators as described in any one of claims 1 to 4.

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