Pneumatic test verification method and system for high-speed three-dimensional flow centrifugal impeller

Abstract

The invention relates to the technical field of pneumatic verification, and discloses a pneumatic test verification method and system for a high-speed three-dimensional flow centrifugal impeller, and the method comprises the steps: carrying out a primary pneumatic test according to a time-self-changing parameter sine image and a pneumatic test variation parameter, obtaining a primary self-changing-variation parameter curve, judging the curve mutation degree of a to-be-recognized curve segment, and determining the curve mutation degree of the to-be-recognized curve segment; and judging whether the to-be-identified curve segment set is greater than a sudden change threshold or not, if so, performing a secondary pneumatic test on the to-be-identified curve segment set to obtain a secondary auto-variation-dependent parameter curve set, and integrating the primary auto-variation-dependent parameter curve and the secondary auto-variation-dependent parameter curve set to obtain a target auto-variation-dependent parameter curve. And carrying out pneumatic test verification on the target self-change-dependent parameter curve. The main purpose of the invention is to solve the problems of low verification efficiency and poor verification variable regulation and control effect of the current pneumatic test verification method of the high-speed three-dimensional flow centrifugal impeller.

Description

Technical Field

[0001] The invention relates to a pneumatic test verification method and system for a high-speed three-dimensional flow centrifugal impeller, belonging to the technical field of pneumatic verification. Background Art

[0002] In the field of fluid machinery, centrifugal impellers are key components of mechanical equipment, and their aerodynamic performance will directly affect the operating efficiency and stability of the entire mechanical equipment. With the continuous development of industrial technology, the requirements for the aerodynamic performance of high-speed centrifugal impellers are also increasing.

[0003] As one of the mainstream design methods for centrifugal impellers, the three-dimensional flow design method optimizes the properties, load distribution and other parameters of the centrifugal impeller through the three-dimensional flow characteristics inside the centrifugal impeller to improve the aerodynamic performance of the centrifugal impeller. At present, when the centrifugal impeller is qualified, it can be verified by aerodynamic testing, but the current aerodynamic test mainly controls the independent variables to make simple changes, and then measures the values ​​of related dependent variables, so as to verify the qualification of the high-speed centrifugal impeller according to the measured related values. This method is difficult to finely control the independent variables in time-sharing to achieve time-sharing fine detection of high-speed centrifugal impellers. Therefore, the current aerodynamic test verification method of high-speed three-dimensional flow centrifugal impellers has the problems of low verification efficiency and poor verification variable control effect. Summary of the invention

[0004] The present invention provides a pneumatic test verification method, system and computer-readable storage medium for a high-speed three-dimensional flow centrifugal impeller, the main purpose of which is to solve the problems of low verification efficiency and poor verification variable control effect in the current pneumatic test verification method for a high-speed three-dimensional flow centrifugal impeller.

[0005] To achieve the above object, the present invention provides a method for aerodynamic test verification of a high-speed three-dimensional flow centrifugal impeller, comprising:

[0006] Obtaining an initial pneumatic test cycle and a pneumatic test variable matrix, extracting pneumatic test independent variable parameters and pneumatic test dependent variable parameters in the pneumatic test variable matrix in sequence, and obtaining an independent variable parameter threshold value of the pneumatic test independent variable parameter;

[0007] Constructing a test time scale circle according to the initial aerodynamic test cycle and the independent variable parameter threshold, and constructing a time-independent variable parameter sinusoidal image according to the test time scale circle;

[0008] Perform an aerodynamic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve;

[0009] The curve segments to be identified are sequentially extracted from the primary independent variable-dependent variable parameter curve according to the preset sliding detection window, and the curve mutation degree of the curve segments to be identified is calculated using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows:

[0010]

[0011] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight;

[0012] Determine whether the curve mutation degree is greater than a preset mutation threshold;

[0013] If the curve mutation degree is not greater than the mutation threshold, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0014] If the curve mutation degree is greater than the mutation threshold, the target aerodynamic test period of the curve segment to be identified is calculated according to the curve mutation degree using a pre-constructed test period adjustment formula, wherein the test period adjustment formula is as follows:

[0015]

[0016] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents the natural constant;

[0017] Determining whether the primary independent variable-dependent variable parameter curve has completed the extraction of the curve segment to be identified;

[0018] If the primary independent variable-dependent variable parameter curve has not completed the extraction of the curve segments to be identified, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0019] If the primary independent variable-dependent variable parameter curve completes the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of the curve segment to be identified and a sequence of the target aerodynamic test cycle;

[0020] According to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence, a secondary aerodynamic test is performed on the set of curve segments to be identified to obtain a set of secondary independent variable-dependent variable parameter curves;

[0021] Integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve;

[0022] A standard independent variable-strain parameter curve is obtained, and the target independent variable-dependent variable parameter curve is verified by aerodynamic test using the standard independent variable-strain parameter curve.

[0023] Optionally, obtaining an initial pneumatic test cycle and a pneumatic test variable matrix includes:

[0024] The pneumatic test level input by the user is received, and the initial pneumatic test cycle is calculated according to the pneumatic test level using a pre-built initial cycle calculation formula, wherein the initial cycle calculation formula is as follows:

[0025]

[0026] Wherein, T0 represents the initial pneumatic test cycle, τ represents the pneumatic test level, and γ represents the preset reference level cycle;

[0027] Obtaining an independent variable parameter set and a dependent variable parameter set of a pneumatic test, constructing an independent variable matrix row sequence according to the independent variable parameter set of the pneumatic test, and constructing a dependent variable matrix column sequence according to the dependent variable parameter set of the pneumatic test;

[0028] The pneumatic test variable matrix is ​​constructed according to the row sequence of the independent variable matrix and the column sequence of the dependent variable matrix.

[0029] Optionally, constructing a test time scale circle according to the initial pneumatic test cycle and an independent variable parameter threshold comprises:

[0030] The independent variable threshold is used as the test time scale radius;

[0031] An initial test circle is constructed according to the test time scale radius, and a unit angle period is calculated according to the initial aerodynamic test period using a pre-constructed unit angle period formula, wherein the unit angle period formula is as follows:

[0032]

[0033] Among them, t θ Represents the unit angle period;

[0034] The initial test circle is time-scaled according to the unit angle period to obtain a test time-scale circle.

[0035] Optionally, constructing a time-independent parameter sinusoidal image according to the test time scale circle comprises:

[0036] According to the preset unit point-taking period and the unit angle period, the unit point-taking angle is calculated using the following formula:

[0037]

[0038] in, Indicates the unit point angle, t q Indicates the unit point-taking cycle;

[0039] According to the unit point angle, a pre-built point angle formula is used to calculate the point angle sequence, wherein the point angle formula is as follows:

[0040]

[0041] in, Indicates the pth point angle, p indicates the point angle sequence number, Indicates the rounding up symbol;

[0042] Sequentially extracting point angles from the point angle sequence, and taking points on the test time scale circle according to the point angles to obtain circumferential sampling points;

[0043] Identify the circumferential sampling time and circumferential independent variable parameter value of the circumferential sampling point;

[0044] According to a preset unit circle method, the circumferential sampling points are sinusoidally plotted in a pre-constructed two-dimensional coordinate system using the circumferential sampling time and the circumferential independent variable parameter value to obtain a circumferential plotting sequence;

[0045] The circular plotting point sequence is fitted to obtain a time-independent parameter sinusoidal image.

[0046] Optionally, the aerodynamic test is performed on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve, including:

[0047] Extracting a circular plotting point sequence from the time-independent variable parameter sinusoidal image, and identifying a circular sampling time sequence and a circular independent variable parameter value sequence of the circular plotting point sequence;

[0048] Setting a circumferential time series independent variable value set according to the circumferential sampling time series and the circumferential independent variable parameter value sequence;

[0049] According to the preset independent variable parameter test value set and the circumferential time series independent variable value set, an aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent variable parameter to obtain a primary dependent variable parameter value sequence;

[0050] According to the circumferential time series independent variable value set and the primary dependent variable value sequence, points are plotted in the two-dimensional coordinate system to obtain a primary independent variable-dependent variable scatter point set;

[0051] The first-order independent variable-dependent variable parameter scatter point set is fitted to obtain a first-order independent variable-dependent variable parameter curve.

[0052] Optionally, extracting the curve segments to be identified in sequence from the primary independent variable-dependent variable parameter curve according to a preset sliding detection window includes:

[0053] Identify the window duration of the sliding detection window, and segment the primary independent variable-dependent variable parameter curve according to the window duration to obtain a set of curve segments to be identified;

[0054] The curve segments to be identified are sequentially extracted from the set of curve segments to be identified.

[0055] Optionally, the step of performing a secondary aerodynamic test on the set of curve segments to be identified according to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence to obtain a set of secondary independent variable-dependent variable parameter curves includes:

[0056] Extracting the curve segments to be identified in sequence from the sequence of curve segments to be identified, and extracting the pneumatic test cycles related to the curve segments to be identified from the target pneumatic test cycle sequence;

[0057] Constructing a relevant time scale circle according to the relevant aerodynamic test cycle and the independent variable parameter threshold;

[0058] Extracting the starting point and the end point of a line segment from the curve segment to be identified, and identifying the starting time and the end time of the starting point and the end point of the line segment;

[0059] Extracting a relevant time scale arc on the relevant time scale circle according to the starting time and the end time;

[0060] Pick points on the relevant time scale arc according to the unit point picking angle to obtain an arc sampling point sequence;

[0061] Extracting arc sampling points in the arc sampling point sequence in sequence, identifying the arc sampling time and the arc independent variable parameter value of the arc sampling points;

[0062] According to the unit circle method, the arc sampling time and the arc independent variable parameter value are used to perform sinusoidal plotting on the arc sampling points in the two-dimensional coordinate system to obtain an arc plotting sequence;

[0063] Identify the arc sampling time sequence and the arc independent variable parameter value sequence of the arc plotting point sequence;

[0064] Setting the arc time series independent variable value set according to the arc sampling time series and the arc independent variable parameter value sequence;

[0065] According to the independent variable parameter test value set and the arc time sequence independent variable value set, a secondary aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent parameter to obtain a secondary dependent parameter value sequence;

[0066] Plot points in the two-dimensional coordinate system according to the arc time series independent variable value set and the secondary dependent variable value sequence to obtain a secondary independent variable-dependent variable scatter point set;

[0067] The secondary independent variable-dependent variable parameter scatter point set is fitted to obtain a secondary independent variable-dependent variable parameter curve, and the secondary independent variable-dependent variable parameter curves of each curve segment to be identified are summarized to obtain a secondary independent variable-dependent variable parameter curve set.

[0068] Optionally, the integrating the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve includes:

[0069] Extracting secondary independent variable-dependent variable parameter curves in sequence from the secondary independent variable-dependent variable parameter curve set, and identifying the starting time scale and the ending time scale of the secondary independent variable-dependent variable parameter curve;

[0070] According to the starting time scale and the end time scale, respectively intercept a sudden change independent variable-dependent variable curve segment and a sudden change time-independent variable sine segment in the primary independent variable-dependent variable parameter curve and the time-independent variable parameter sine image;

[0071] The sudden independent-dependent curve segment and the sudden time-independent sine segment are removed from the primary independent-dependent parameter curve and the time-independent parameter sine image respectively to obtain a segmented independent-dependent parameter curve segment sequence and a segmented time-independent parameter sine sequence;

[0072] Filling the quadratic independent-dependent parameter curve set into the segmented independent-dependent parameter curve segment sequence to obtain a target independent-dependent filling curve;

[0073] Identify the arc time series independent variable value set corresponding to the quadratic independent variable-dependent variable parameter curve to obtain an arc time series independent variable value set sequence, fill the arc time series independent variable value set sequence into the segmented time-independent variable parameter sine sequence to obtain a target time-independent variable parameter sine curve;

[0074] The target time-independent parameter sine curve is used to perform time-independent parameter mapping on the target independent-dependent filling curve to obtain a target independent-dependent parameter curve.

[0075] Optionally, the using the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve includes:

[0076] Using the standard independent variable-strain parameter curve to perform dependent variable parameter calibration on the target independent variable-dependent variable parameter curve to obtain a dependent variable parameter calibration result;

[0077] According to the dependent parameter verification result, it is judged whether the high-speed three-dimensional flow centrifugal impeller meets the preset aerodynamic test verification standard, and the aerodynamic test verification of the target independent variable-dependent parameter curve is completed.

[0078] To achieve the above object, the present invention also provides a high-speed three-dimensional flow centrifugal impeller pneumatic test verification system, comprising:

[0079] A pneumatic test module is used to obtain an initial pneumatic test cycle and a pneumatic test variable matrix, extract pneumatic test independent variables and pneumatic test dependent variables in the pneumatic test variable matrix in turn, and obtain independent variable parameter thresholds of the pneumatic test independent variables; construct a test time scale circle according to the initial pneumatic test cycle and the independent variable parameter threshold, and construct a time-independent variable sinusoidal image according to the test time scale circle; perform a pneumatic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the pneumatic test dependent variable to obtain a primary independent variable-dependent variable curve;

[0080] The secondary pneumatic test module is used to extract the curve segments to be identified in the primary independent variable-dependent variable parameter curve in sequence according to the preset sliding detection window, and calculate the curve mutation degree of the curve segments to be identified using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows:

[0081]

[0082] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight; it is determined whether the curve mutation degree is greater than a preset mutation threshold; if the curve mutation degree is not greater than the mutation threshold, then the step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window is returned; if the curve mutation degree is greater than the mutation threshold, then according to the curve mutation degree, the target aerodynamic test cycle of the curve segment to be identified is calculated using a pre-constructed test cycle adjustment formula, wherein the test cycle adjustment formula is as follows:

[0083]

[0084] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents a natural constant; it is judged whether the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified; if the primary independent-dependent parameter curve has not completed the extraction of the curve segment to be identified, then the step of sequentially extracting the curve segment to be identified in the primary independent-dependent parameter curve according to the preset sliding detection window is returned to; if the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of curve segments to be identified and a sequence of target aerodynamic test cycles; a secondary aerodynamic test is performed on the set of curve segments to be identified according to the sequence of curve segments to be identified and the sequence of target aerodynamic test cycles to obtain a secondary set of independent-dependent parameter curves;

[0085] An independent variable-dependent variable parameter curve integration module, used to integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve;

[0086] The target independent variable-dependent variable parameter curve verification module is used to obtain a standard independent variable-strain parameter curve, and use the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve. In order to solve the above problem, the present invention also provides an electronic device, which includes:

[0087] at least one processor; and,

[0088] a memory communicatively connected to the at least one processor; wherein,

[0089] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to implement the aerodynamic test verification method of the high-speed three-dimensional flow centrifugal impeller described above.

[0090] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned aerodynamic test verification method for a high-speed three-dimensional flow centrifugal impeller.

[0091] Compared with the problems described in the background technology, the embodiment of the present invention first performs an aerodynamic test on the high-speed three-dimensional flow centrifugal impeller. When performing an aerodynamic test, it is first necessary to extract the aerodynamic test independent variable parameters and the aerodynamic test dependent variable parameters in the aerodynamic test variable matrix in sequence, and then obtain the independent variable parameter threshold of the aerodynamic test independent variable parameter, so that the test time scale circle can be constructed according to the initial aerodynamic test cycle and the independent variable parameter threshold. At this time, the time-independent variable sinusoidal image can be constructed according to the test time scale circle. Finally, the pre-constructed A high-speed three-dimensional flow centrifugal impeller is subjected to an aerodynamic test to obtain an independent variable-dependent variable parameter curve. After the completion of the aerodynamic test, a secondary aerodynamic test is required. Since the secondary aerodynamic test is performed on the to-be-identified curve segments with a large curve mutation degree in the primary aerodynamic test, it is first necessary to identify which to-be-identified curve segments need to be subjected to the secondary aerodynamic test. The present invention sequentially extracts the to-be-identified curve segments from the primary independent variable-dependent variable parameter curve according to a preset sliding detection window, calculates the curve mutation degree of the to-be-identified curve segments using a pre-constructed curve mutation formula, and determines whether the curve mutation degree is If the curve mutation degree is greater than the preset mutation threshold, if the curve mutation degree is greater than the mutation threshold, then according to the curve mutation degree, the target aerodynamic test period of the to-be-identified curve segment is calculated by using the pre-constructed test period adjustment formula, and finally the to-be-identified curve segment and the target aerodynamic test period are summarized by corresponding formula to obtain the to-be-identified curve segment sequence and the target aerodynamic test period sequence, and finally, according to the to-be-identified curve segment sequence and the target aerodynamic test period sequence, a secondary aerodynamic test is performed on the to-be-identified curve segment set to obtain a secondary independent variable-dependent variable parameter curve set. Since the secondary aerodynamic test is a supplementary test to the primary aerodynamic test, it is necessary to It is necessary to integrate the primary independent-dependent parameter curve and the secondary independent-dependent parameter curve set to obtain the target independent-dependent parameter curve. Finally, the target independent-dependent parameter curve is aerodynamically tested and verified using the standard independent-strain parameter curve to complete the aerodynamic test verification of the high-speed three-dimensional flow centrifugal impeller. Therefore, the aerodynamic test verification method, system, electronic device and computer-readable storage medium for a high-speed three-dimensional flow centrifugal impeller proposed in the present invention mainly aim to solve the problems of low verification efficiency and poor verification variable control effect in the current aerodynamic test verification method for a high-speed three-dimensional flow centrifugal impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1 A schematic flow chart of a method for aerodynamic testing and verification of a high-speed three-dimensional flow centrifugal impeller provided in one embodiment of the present invention;

[0093] Figure 2 A functional module diagram of a pneumatic test verification system for a high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention;

[0094] Figure 3 A schematic diagram of the structure of an electronic device for implementing the aerodynamic test verification method of the high-speed three-dimensional flow centrifugal impeller provided in one embodiment of the present invention.

[0095] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0096] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0097] The embodiment of the present application provides a method for aerodynamic test verification of a high-speed three-dimensional flow centrifugal impeller. The execution subject of the method for aerodynamic test verification of a high-speed three-dimensional flow centrifugal impeller includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the method for aerodynamic test verification of a high-speed three-dimensional flow centrifugal impeller can be executed by software or hardware installed in a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0098] Embodiment 1:

[0099] Reference Figure 1 FIG. 1 is a flow chart of a method for aerodynamic testing and verification of a high-speed three-dimensional flow centrifugal impeller provided in an embodiment of the present invention. In this embodiment, the method for aerodynamic testing and verification of a high-speed three-dimensional flow centrifugal impeller includes:

[0100] S1. Obtain an initial pneumatic test cycle and a pneumatic test variable matrix, extract pneumatic test independent variable parameters and pneumatic test dependent variable parameters in the pneumatic test variable matrix in sequence, and obtain an independent variable parameter threshold value of the pneumatic test independent variable parameter.

[0101] It can be explained that the initial aerodynamic test cycle refers to the test duration of the first aerodynamic test on the high-speed three-dimensional flow centrifugal impeller, the aerodynamic test variable matrix refers to a two-dimensional parameter matrix constructed according to the aerodynamic test independent variable and the aerodynamic test dependent variable, the aerodynamic test independent variable refers to the parameter affecting the aerodynamic test, such as mass flow, air pressure, temperature, etc., the aerodynamic test dependent variable refers to the parameter that needs to be measured when conducting the aerodynamic test, such as pressure ratio, aerodynamic efficiency, seven airflow pressures, airflow speed, etc. The independent variable parameter threshold refers to the maximum test value of the aerodynamic test independent variable.

[0102] In the embodiment of the present invention, the step of obtaining the initial pneumatic test cycle and the pneumatic test variable matrix includes:

[0103] The pneumatic test level input by the user is received, and the initial pneumatic test cycle is calculated according to the pneumatic test level using a pre-built initial cycle calculation formula, wherein the initial cycle calculation formula is as follows:

[0104]

[0105] Wherein, T0 represents the initial pneumatic test cycle, τ represents the pneumatic test level, and γ represents the preset reference level cycle;

[0106] Obtaining an independent variable parameter set and a dependent variable parameter set of a pneumatic test, constructing an independent variable matrix row sequence according to the independent variable parameter set of the pneumatic test, and constructing a dependent variable matrix column sequence according to the dependent variable parameter set of the pneumatic test;

[0107] The pneumatic test variable matrix is ​​constructed according to the row sequence of the independent variable matrix and the column sequence of the dependent variable matrix.

[0108] Furthermore, the aerodynamic test level refers to the test level of aerodynamic testing of high-speed three-dimensional flow centrifugal impellers. The higher the test level, the higher the test accuracy and test requirements. The reference level period refers to the period duration preset by the user for reference, for example: 1h. The independent variable matrix row sequence refers to the row sequence composed of aerodynamic test independent variable parameters in the aerodynamic test variable matrix. First, the aerodynamic test independent variable parameters in the aerodynamic test independent variable parameter set need to be sorted, and the sorted aerodynamic test independent variable parameters are used as rows in the aerodynamic test variable matrix. The dependent variable matrix column sequence refers to the column sequence composed of aerodynamic test dependent variable parameters in the aerodynamic test variable matrix.

[0109] S2. Constructing a test time scale circle according to the initial aerodynamic test cycle and the independent variable parameter threshold, and constructing a time-independent variable parameter sinusoidal image according to the test time scale circle.

[0110] Furthermore, the test time scale circle refers to a circle with a time scale constructed with the initial aerodynamic test cycle as the circumference and the independent variable parameter threshold as the radius. The time-independent variable sine image refers to a sine function image drawn according to the unit circle method based on the test time scale circle. The unit circle method can link trigonometric functions such as sine, cosine and tangent with coordinate points on the unit circle through the unit circle. On the unit circle, for any angle, the value of the trigonometric function can be determined by rotating counterclockwise from the origin along the unit circle to the coordinate point corresponding to the angle.

[0111] In an embodiment of the present invention, the step of constructing a test time scale circle according to the initial pneumatic test cycle and the independent variable parameter threshold value includes:

[0112] The independent variable threshold is used as the test time scale radius;

[0113] An initial test circle is constructed according to the test time scale radius, and a unit angle period is calculated according to the initial aerodynamic test period using a pre-constructed unit angle period formula, wherein the unit angle period formula is as follows:

[0114]

[0115] Among them, t θ Represents the unit angle period;

[0116] The initial test circle is time-scaled according to the unit angle period to obtain a test time-scale circle.

[0117] Further, the test time scale radius refers to the radius of the test time scale circle, the initial test circle refers to a circle with a radius equal to the test time scale radius, and the unit angle period refers to the test duration of a unit angle on the test time scale circle, for example: the test duration corresponding to an arc length of 1° is 10s, and at this time, the initial pneumatic test period is 3600s. After obtaining the unit angle period, the unit angle period can be used to represent the scale on the circumference of the initial test circle, for example: 10s, 20s, 30s, ..., 3600s.

[0118] In an embodiment of the present invention, the step of constructing a time-independent parameter sinusoidal image according to the test time scale circle includes:

[0119] According to the preset unit point-taking period and the unit angle period, the unit point-taking angle is calculated using the following formula:

[0120]

[0121] in, Indicates the unit point angle, t q Indicates the unit point-taking cycle;

[0122] According to the unit point angle, a pre-built point angle formula is used to calculate the point angle sequence, wherein the point angle formula is as follows:

[0123]

[0124] in, Indicates the pth point angle, p indicates the point angle sequence number, Indicates the rounding up symbol;

[0125] Sequentially extracting point angles from the point angle sequence, and taking points on the test time scale circle according to the point angles to obtain circumferential sampling points;

[0126] Identify the circumferential sampling time and circumferential independent variable parameter value of the circumferential sampling point;

[0127] According to a preset unit circle method, the circumferential sampling points are sinusoidally plotted in a pre-constructed two-dimensional coordinate system using the circumferential sampling time and the circumferential independent variable parameter value to obtain a circumferential plotting sequence;

[0128] The circular plotting point sequence is fitted to obtain a time-independent parameter sinusoidal image.

[0129] Furthermore, the unit point taking period refers to the test duration for sampling points on the test time scale circle, and the unit point taking angle refers to the angle when sampling points are taken on the test time scale circle according to the unit point taking period. For example, when the unit point taking period is 30s and the unit angle period is 10s, the unit point taking angle is 3°. The point taking angle sequence refers to a sequence of point taking angles when sampling points are taken, for example, 3°, 6°, 9°, ..., 3600°. It should be noted that when the unit point taking period and the unit angle period cannot be divided evenly, they need to be rounded up. For example, when the unit point taking angle is 7°, is 52. At this time, the maximum value of the point angle sequence number is 52, and the corresponding point angle is 364° (ie 4°).

[0130] It can be explained that the circumferential sampling time refers to the test duration corresponding to the circumferential sampling point, and the circumferential independent variable parameter value refers to the aerodynamic test independent variable parameter value of the circumferential sampling point.

[0131] In detail, when using the unit circle method for sinusoidal plotting, it is necessary to first place the center of the test time scale circle at the origin of the two-dimensional coordinate system, and then perform sinusoidal plotting on the positive x-axis of the two-dimensional coordinate system according to the circumferential sampling points to obtain a circumferential plotting sequence. At this time, since there are circumferential plotting points on the negative y-axis in the circumferential plotting sequence (circumferential plotting points refer to the coordinate points obtained after sinusoidal plotting), it is necessary to translate the circumferential plotting sequence to the positive y-axis by the distance of the independent variable threshold, and at this time, the circumferential plotting sequence is all on the positive y-axis. Finally, the circumferential plotting sequence is fitted to obtain the time-independent variable sinusoidal image. The horizontal coordinate unit of the two-dimensional coordinate system is seconds, and the vertical coordinate unit is the unit of the pneumatic test independent variable or the unit of the pneumatic test dependent variable. The vertical coordinate unit of the time-independent variable sinusoidal image is the unit of the pneumatic test independent variable.

[0132] S3. Perform an aerodynamic test on the pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve.

[0133] It can be explained that the said aerodynamic test refers to the test process of measuring the dependent variable parameter of the aerodynamic test according to the relationship between the change of the independent variable parameter of the aerodynamic test in the time-independent variable sinusoidal image with time. For example, when the independent variable parameter of the aerodynamic test is the mass flow rate and the dependent variable parameter of the aerodynamic test is the aerodynamic efficiency, it is necessary to control the change of the mass flow rate according to the time-independent variable sinusoidal image and measure the aerodynamic efficiency of the high-speed three-dimensional flow centrifugal impeller at the same time. The said first independent variable-dependent variable parameter curve refers to the curve showing the change of the dependent variable parameter of the aerodynamic test with the time-independent variable sinusoidal image when the aerodynamic test is carried out on the high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image.

[0134] In the embodiment of the present invention, an aerodynamic test is performed on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve, including:

[0135] Extracting a circular plotting point sequence from the time-independent variable parameter sinusoidal image, and identifying a circular sampling time sequence and a circular independent variable parameter value sequence of the circular plotting point sequence;

[0136] Setting a circumferential time series independent variable value set according to the circumferential sampling time series and the circumferential independent variable parameter value sequence;

[0137] According to the preset independent variable parameter test value set and the circumferential time series independent variable value set, an aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent variable parameter to obtain a primary dependent variable parameter value sequence;

[0138] According to the circumferential time series independent variable value set and the primary dependent variable value sequence, points are plotted in the two-dimensional coordinate system to obtain a primary independent variable-dependent variable scatter point set;

[0139] The first-order independent variable-dependent variable parameter scatter point set is fitted to obtain a first-order independent variable-dependent variable parameter curve.

[0140] It can be understood that the circumferential plotting point sequence refers to a sequence of circumferential plotting points obtained according to the test time scale circle, the circumferential sampling time sequence refers to a sequence of circumferential sampling time of each circumferential plotting point in the circumferential plotting point sequence, and the circumferential independent variable parameter value sequence refers to a sequence of pneumatic test independent variable parameter values ​​of each circumferential plotting point in the circumferential plotting point sequence. The circumferential timing independent variable value set refers to a set of pneumatic test independent variable parameters with circumferential sampling time, for example: when the circumferential sampling time sequence is 3s, 6s, 9s, 12s, etc., and the circumferential independent variable parameter value sequence is mass flow 30g / s, 34g / s, 37g / s, 42g / s, etc., at this time, the circumferential timing independent variable value set is 3s-30g / s, 6s-34g / s, 9s-37g / s, 12s-42g / s. The independent variable test value set refers to a set of irrelevant pneumatic test independent variable parameters. For example, when the pneumatic test independent variable is mass flow, parameters such as air pressure and temperature are irrelevant pneumatic test independent variable parameters. The irrelevant pneumatic test independent variable parameters can be controlled to appropriate fixed values ​​and cannot affect the test of the pneumatic test independent variable parameters. The primary dependent variable value sequence refers to the pneumatic test dependent variable value sequence corresponding to the circular time series independent variable value set obtained when performing a pneumatic test. When plotting the circular time series independent variable value set and the primary dependent variable value sequence, it is only necessary to ensure that the circumferential sampling time of each circular time series independent value in the circular time series independent value set is the same as the circumferential sampling time of the corresponding primary dependent variable value, that is, the circular time series independent value set and the primary dependent parameter value sequence share the positive x-axis of the two-dimensional coordinate system.

[0141] S4. Extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve in sequence according to a preset sliding detection window, and calculating the curve mutation degree of the curve segments to be identified using a pre-constructed curve mutation formula.

[0142] It can be explained that the sliding detection window refers to an extraction window for extracting the curve segment to be identified, and the curve segment to be identified refers to a curve segment that needs to be calculated for curve mutation degree. The curve mutation degree refers to the degree of change of the curve segment to be identified.

[0143] In detail, the curve mutation formula is as follows:

[0144]

[0145] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1It represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight.

[0146] In the embodiment of the present invention, sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window includes:

[0147] Identify the window duration of the sliding detection window, and segment the primary independent variable-dependent variable parameter curve according to the window duration to obtain a set of curve segments to be identified;

[0148] The curve segments to be identified are sequentially extracted from the set of curve segments to be identified.

[0149] It can be understood that the window duration refers to the test duration of the sliding detection window. When the window duration is 100s, the curve segment sets to be identified are the curve segment sets corresponding to the time periods of 0s-100s, 100s-200s, 200s-300s, etc. in the primary independent variable-dependent variable parameter curve.

[0150] S5. Determine whether the curve mutation degree is greater than a preset mutation threshold.

[0151] If the mutation degree of the curve is not greater than the mutation threshold, the process returns to the step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window.

[0152] If the curve mutation degree is greater than the mutation threshold, S6 is executed to calculate the target aerodynamic test period of the to-be-identified curve segment according to the curve mutation degree using a pre-constructed test period adjustment formula.

[0153] Furthermore, the target aerodynamic test cycle refers to an aerodynamic test cycle obtained by adjusting an initial aerodynamic test cycle of the curve segment to be identified according to the curve mutation degree.

[0154] In detail, the test cycle adjustment formula is as follows:

[0155]

[0156] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents the natural constant.

[0157] S7. Determine whether the primary independent variable-dependent variable parameter curve has completed the extraction of the curve segment to be identified.

[0158] If the primary independent variable-dependent variable parameter curve has not completed the extraction of the curve segments to be identified, the process returns to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window.

[0159] If the primary independent variable-dependent variable parameter curve completes the extraction of the curve segment to be identified, S8 is executed to summarize the curve segment to be identified and the target aerodynamic test cycle in a corresponding manner to obtain a sequence of the curve segment to be identified and a sequence of the target aerodynamic test cycle.

[0160] It can be explained that the corresponding formula summary refers to identifying the curve segment to be identified corresponding to the target aerodynamic test cycle, and then summarizing the corresponding curve segment to be identified and the target aerodynamic test cycle.

[0161] S9. Perform a secondary aerodynamic test on the set of curve segments to be identified according to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence to obtain a set of secondary independent variable-dependent variable parameter curves.

[0162] It can be understood that the secondary aerodynamic test refers to a secondary aerodynamic test on the curve segment to be identified according to the target aerodynamic test cycle. The secondary independent variable-dependent variable parameter curve set refers to a curve set of the aerodynamic test dependent variable parameters changing with the aerodynamic test independent variable parameters when the aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller according to the target aerodynamic test cycle.

[0163] In the embodiment of the present invention, the secondary aerodynamic test is performed on the set of curve segments to be identified according to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence to obtain a set of secondary independent variable-dependent variable parameter curves, including:

[0164] Extracting the curve segments to be identified in sequence from the sequence of curve segments to be identified, and extracting the pneumatic test cycles related to the curve segments to be identified from the target pneumatic test cycle sequence;

[0165] Constructing a relevant time scale circle according to the relevant aerodynamic test cycle and the independent variable parameter threshold;

[0166] Extracting the starting point and the end point of a line segment from the curve segment to be identified, and identifying the starting time and the end time of the starting point and the end point of the line segment;

[0167] Extracting a relevant time scale arc on the relevant time scale circle according to the starting time and the end time;

[0168] Pick points on the relevant time scale arc according to the unit point picking angle to obtain an arc sampling point sequence;

[0169] Extracting arc sampling points in the arc sampling point sequence in sequence, identifying the arc sampling time and the arc independent variable parameter value of the arc sampling points;

[0170] According to the unit circle method, the arc sampling time and the arc independent variable parameter value are used to perform sinusoidal plotting on the arc sampling points in the two-dimensional coordinate system to obtain an arc plotting sequence;

[0171] Identify the arc sampling time sequence and the arc independent variable parameter value sequence of the arc plotting point sequence;

[0172] Setting the arc time series independent variable value set according to the arc sampling time series and the arc independent variable parameter value sequence;

[0173] According to the independent variable parameter test value set and the arc time sequence independent variable value set, a secondary aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent parameter to obtain a secondary dependent parameter value sequence;

[0174] Plot points in the two-dimensional coordinate system according to the arc time series independent variable value set and the secondary dependent variable value sequence to obtain a secondary independent variable-dependent variable scatter point set;

[0175] The secondary independent variable-dependent variable parameter scatter point set is fitted to obtain a secondary independent variable-dependent variable parameter curve, and the secondary independent variable-dependent variable parameter curves of each curve segment to be identified are summarized to obtain a secondary independent variable-dependent variable parameter curve set.

[0176] Furthermore, the relevant aerodynamic test cycle refers to the target aerodynamic test cycle corresponding to the curve segment to be identified. The relevant time scale circle refers to the test time scale circle dedicated to the secondary test of the curve segment to be identified and constructed according to the relevant aerodynamic test cycle, the starting time refers to the time point corresponding to the starting point of the line segment on the x-axis, and the end time refers to the time point corresponding to the end point of the line segment on the x-axis. The relevant time scale arc refers to the arc intercepted on the relevant time scale circle according to the starting time and the end time, the arc sampling time refers to the test time of the arc sampling point, and the arc independent variable parameter value refers to the value of the aerodynamic test independent variable parameter at the arc sampling point. The arc point drawing sequence has the same point drawing method as the circle point drawing sequence, which will not be described in detail here. The arc sampling time series refers to a sequence of arc sampling times of each arc point in the arc point drawing sequence. The arc independent variable parameter value sequence refers to a sequence of pneumatic test independent variable parameter values ​​of each arc point in the arc point drawing sequence. The arc timing independent variable value set refers to a set of pneumatic test independent variable parameters with arc sampling times. The secondary dependent parameter value sequence is obtained in the same way as the primary dependent parameter value sequence, which will not be described in detail here.

[0177] It can be understood that the secondary independent variable-dependent variable parameter scatter point set is obtained in the same way as the primary independent variable-dependent variable parameter scatter point set, which will not be repeated here.

[0178] S10, integrating the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve.

[0179] It can be explained that the target independent variable-dependent variable parameter curve refers to the curve obtained by inserting the secondary independent variable-dependent variable parameter curve set into the corresponding position of the primary independent variable-dependent variable parameter curve.

[0180] In the embodiment of the present invention, the integration of the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve includes:

[0181] Extracting secondary independent variable-dependent variable parameter curves in sequence from the secondary independent variable-dependent variable parameter curve set, and identifying the starting time scale and the ending time scale of the secondary independent variable-dependent variable parameter curve;

[0182] According to the starting time scale and the end time scale, respectively intercept a sudden change independent variable-dependent variable curve segment and a sudden change time-independent variable sine segment in the primary independent variable-dependent variable parameter curve and the time-independent variable parameter sine image;

[0183] The sudden independent-dependent curve segment and the sudden time-independent sine segment are removed from the primary independent-dependent parameter curve and the time-independent parameter sine image respectively to obtain a segmented independent-dependent parameter curve segment sequence and a segmented time-independent parameter sine sequence;

[0184] Filling the quadratic independent-dependent parameter curve set into the segmented independent-dependent parameter curve segment sequence to obtain a target independent-dependent filling curve;

[0185] Identify the arc time series independent variable value set corresponding to the quadratic independent variable-dependent variable parameter curve to obtain an arc time series independent variable value set sequence, fill the arc time series independent variable value set sequence into the segmented time-independent variable parameter sine sequence to obtain a target time-independent variable parameter sine curve;

[0186] The target time-independent parameter sine curve is used to perform time-independent parameter mapping on the target independent-dependent filling curve to obtain a target independent-dependent parameter curve.

[0187] It can be understood that the sudden independent-dependent curve segment refers to the curve segment at the starting time scale and the end time scale in the primary independent-dependent parameter curve, and the sudden time-independent sine segment refers to the sine curve segment at the starting time scale and the end time scale in the time-independent parameter sine image. When the secondary independent-dependent parameter curve set is filled into the segmented independent-dependent parameter curve segment sequence, it is necessary to connect the secondary independent-dependent parameter curve set to the segmented independent-dependent parameter curve segment sequence according to the starting time scale and the end time scale of each secondary independent-dependent parameter curve, and the filling process of the target time-independent parameter sine curve is the same. The time independent parameter mapping refers to associating the target time-independent parameter sine curve with the target independent-dependent filling curve using the test time.

[0188] For example, when the segmented time-independent variable parameter sinusoidal sequence is 9s-mass flow rate 30g / s, 12s-mass flow rate 33g / s, 15s-mass flow rate 38g / s; 23s-mass flow rate 81g / s, 26s-mass flow rate 85g / s, 29s-mass flow rate 88g / s; 37s-mass flow rate 110g / s, 40s-mass flow rate 115g / s, 43s-mass flow rate 118g / s, then the arc timing sequence is automatically variable The value set sequences are 17s-mass flow rate 39g / s, 19s-mass flow rate 41g / s, 21s-mass flow rate 42g / s; 31s-mass flow rate 92g / s, 33s-mass flow rate 95g / s, 35s-mass flow rate 100g / s. The arc time series independent variable value set sequence can be inserted once into the segmented time-independent variable parameter sine sequence to obtain sinusoidal curve segments with different circle / arc sampling times in different test duration intervals.

[0189] S11, obtaining a standard independent variable-strain parameter curve, and using the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve.

[0190] It can be explained that the marked independent variable-strain parameter curve refers to an independent variable-dependent variable parameter curve of a high-speed three-dimensional flow centrifugal impeller that meets the design standards during an aerodynamic test.

[0191] In the embodiment of the present invention, the method of performing aerodynamic test verification on the target independent variable-dependent variable curve by using the standard independent variable-strain parameter curve includes:

[0192] Using the standard independent variable-strain parameter curve to perform dependent variable parameter calibration on the target independent variable-dependent variable parameter curve to obtain a dependent variable parameter calibration result;

[0193] According to the dependent parameter verification result, it is judged whether the high-speed three-dimensional flow centrifugal impeller meets the preset aerodynamic test verification standard, and the aerodynamic test verification of the target independent variable-dependent parameter curve is completed.

[0194] Furthermore, the dependent parameter verification refers to comparing the coordinate points in the standard independent variable-strain parameter curve and the target independent variable-dependent parameter curve at the same test time. If the comparison result is that the deviation degree of the corresponding coordinate points in the target independent variable-dependent parameter curve and the standard independent variable-strain parameter curve is greater than the aerodynamic test verification standard, it indicates that there is a defect in the design of the high-speed three-dimensional flow centrifugal impeller; if the comparison result is that the deviation degree of the corresponding coordinate points in the target independent variable-dependent parameter curve and the standard independent variable-strain parameter curve is not greater than the aerodynamic test verification standard, it indicates that the design of the high-speed three-dimensional flow centrifugal impeller is qualified.

[0195] Compared with the problems described in the background technology, the embodiment of the present invention first performs an aerodynamic test on the high-speed three-dimensional flow centrifugal impeller. When performing an aerodynamic test, it is first necessary to extract the aerodynamic test independent variable parameters and the aerodynamic test dependent variable parameters in the aerodynamic test variable matrix in sequence, and then obtain the independent variable parameter threshold of the aerodynamic test independent variable parameter, so that the test time scale circle can be constructed according to the initial aerodynamic test cycle and the independent variable parameter threshold. At this time, the time-independent variable sinusoidal image can be constructed according to the test time scale circle. Finally, the pre-constructed A high-speed three-dimensional flow centrifugal impeller is subjected to an aerodynamic test to obtain an independent variable-dependent variable parameter curve. After the completion of the aerodynamic test, a secondary aerodynamic test is required. Since the secondary aerodynamic test is performed on the to-be-identified curve segments with a large curve mutation degree in the primary aerodynamic test, it is first necessary to identify which to-be-identified curve segments need to be subjected to the secondary aerodynamic test. The present invention sequentially extracts the to-be-identified curve segments from the primary independent variable-dependent variable parameter curve according to a preset sliding detection window, calculates the curve mutation degree of the to-be-identified curve segments using a pre-constructed curve mutation formula, and determines whether the curve mutation degree is If the curve mutation degree is greater than the preset mutation threshold, if the curve mutation degree is greater than the mutation threshold, then according to the curve mutation degree, the target aerodynamic test period of the to-be-identified curve segment is calculated by using the pre-constructed test period adjustment formula, and finally the to-be-identified curve segment and the target aerodynamic test period are summarized by corresponding formula to obtain the to-be-identified curve segment sequence and the target aerodynamic test period sequence, and finally, according to the to-be-identified curve segment sequence and the target aerodynamic test period sequence, a secondary aerodynamic test is performed on the to-be-identified curve segment set to obtain a secondary independent variable-dependent variable parameter curve set. Since the secondary aerodynamic test is a supplementary test to the primary aerodynamic test, it is necessary to It is necessary to integrate the primary independent-dependent parameter curve and the secondary independent-dependent parameter curve set to obtain the target independent-dependent parameter curve. Finally, the target independent-dependent parameter curve is aerodynamically tested and verified using the standard independent-strain parameter curve to complete the aerodynamic test verification of the high-speed three-dimensional flow centrifugal impeller. Therefore, the aerodynamic test verification method, system, electronic device and computer-readable storage medium for a high-speed three-dimensional flow centrifugal impeller proposed in the present invention mainly aim to solve the problems of low verification efficiency and poor verification variable control effect in the current aerodynamic test verification method for a high-speed three-dimensional flow centrifugal impeller.

[0196] Embodiment 2:

[0197] like Figure 2 , which is a functional module diagram of an aerodynamic test verification system for a high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention.

[0198] The pneumatic test verification system 100 of the high-speed three-dimensional flow centrifugal impeller of the present invention can be installed in an electronic device. According to the functions to be implemented, the pneumatic test verification system 100 of the high-speed three-dimensional flow centrifugal impeller can include a primary pneumatic test module 101, a secondary pneumatic test module 102, an independent variable-dependent variable parameter curve integration module 103 and a target independent variable-dependent variable parameter curve verification module 104. The module of the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0199] The primary pneumatic test module 101 is used to obtain an initial pneumatic test cycle and a pneumatic test variable matrix, extract pneumatic test independent variables and pneumatic test dependent variables in the pneumatic test variable matrix in turn, and obtain independent variable parameter thresholds of the pneumatic test independent variables; construct a test time scale circle according to the initial pneumatic test cycle and the independent variable parameter threshold, and construct a time-independent variable sinusoidal image according to the test time scale circle; perform a pneumatic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the pneumatic test dependent variable, and obtain a primary independent variable-dependent variable curve;

[0200] The secondary pneumatic test module 102 is used to sequentially extract the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to a preset sliding detection window, and calculate the curve mutation degree of the curve segments to be identified using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows:

[0201]

[0202] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight; it is determined whether the curve mutation degree is greater than a preset mutation threshold; if the curve mutation degree is not greater than the mutation threshold, then the step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window is returned; if the curve mutation degree is greater than the mutation threshold, then according to the curve mutation degree, the target aerodynamic test cycle of the curve segment to be identified is calculated using a pre-constructed test cycle adjustment formula, wherein the test cycle adjustment formula is as follows:

[0203]

[0204] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents a natural constant; it is judged whether the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified; if the primary independent-dependent parameter curve has not completed the extraction of the curve segment to be identified, then the step of sequentially extracting the curve segment to be identified in the primary independent-dependent parameter curve according to the preset sliding detection window is returned to; if the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of curve segments to be identified and a sequence of target aerodynamic test cycles; a secondary aerodynamic test is performed on the set of curve segments to be identified according to the sequence of curve segments to be identified and the sequence of target aerodynamic test cycles to obtain a secondary set of independent-dependent parameter curves;

[0205] The independent variable-dependent variable parameter curve integration module 103 is used to integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve;

[0206] The target independent variable-dependent variable parameter curve verification module 104 is used to obtain a standard independent variable-strain parameter curve, and use the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve.

[0207] In detail, the modules in the aerodynamic test verification system 100 for the high-speed three-dimensional flow centrifugal impeller in the embodiment of the present invention are used in the same manner as described above. Figure 1 The aerodynamic test verification method of the high-speed three-dimensional flow centrifugal impeller described in the invention has the same technical means and can produce the same technical effects, so it will not be repeated here.

[0208] Embodiment 3:

[0209] like Figure 3 , is a schematic diagram of the structure of an electronic device for implementing a pneumatic test verification method for a high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention.

[0210] The electronic device 1 may include a processor 10, a memory 11, a bus 12 and a communication interface 13, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as an aerodynamic test verification program for a high-speed three-dimensional flow centrifugal impeller.

[0211] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. The memory 11 may be an internal storage unit of the electronic device 1 in some embodiments, such as a mobile hard disk of the electronic device 1. The memory 11 may also be an external storage device of the electronic device 1 in other embodiments, such as a plug-in mobile hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), etc. equipped on the electronic device 1. Further, the memory 11 may also include both an internal storage unit of the electronic device 1 and an external storage device. The memory 11 may not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the pneumatic test verification program of the high-speed three-dimensional flow centrifugal impeller, but also be used to temporarily store data that has been output or is to be output.

[0212] The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules stored in the memory 11 (such as a pneumatic test verification program for a high-speed three-dimensional flow centrifugal impeller, etc.), and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0213] The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0214] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0215] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to each component. Preferably, the power source may be logically connected to the at least one processor 10 through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0216] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0217] Optionally, the electronic device 1 may further include a user interface, which may be a display (Display), an input unit (such as a keyboard (Keyboard)), and optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device, etc. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0218] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0219] The aerodynamic test verification program of the high-speed three-dimensional flow centrifugal impeller stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0220] Obtaining an initial pneumatic test cycle and a pneumatic test variable matrix, extracting pneumatic test independent variable parameters and pneumatic test dependent variable parameters in the pneumatic test variable matrix in sequence, and obtaining an independent variable parameter threshold value of the pneumatic test independent variable parameter;

[0221] Constructing a test time scale circle according to the initial aerodynamic test cycle and the independent variable parameter threshold, and constructing a time-independent variable parameter sinusoidal image according to the test time scale circle;

[0222] Perform an aerodynamic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve;

[0223] The curve segments to be identified are sequentially extracted from the primary independent variable-dependent variable parameter curve according to the preset sliding detection window, and the curve mutation degree of the curve segments to be identified is calculated using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows:

[0224]

[0225] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight;

[0226] Determine whether the curve mutation degree is greater than a preset mutation threshold;

[0227] If the curve mutation degree is not greater than the mutation threshold, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0228] If the curve mutation degree is greater than the mutation threshold, the target aerodynamic test period of the curve segment to be identified is calculated according to the curve mutation degree using a pre-constructed test period adjustment formula, wherein the test period adjustment formula is as follows:

[0229]

[0230] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents the natural constant;

[0231] Determining whether the primary independent variable-dependent variable parameter curve has completed the extraction of the curve segment to be identified;

[0232] If the primary independent variable-dependent variable parameter curve has not completed the extraction of the curve segments to be identified, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0233] If the primary independent variable-dependent variable parameter curve completes the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of the curve segment to be identified and a sequence of the target aerodynamic test cycle;

[0234] According to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence, a secondary aerodynamic test is performed on the set of curve segments to be identified to obtain a set of secondary independent variable-dependent variable parameter curves;

[0235] Integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve;

[0236] A standard independent variable-strain parameter curve is obtained, and the target independent variable-dependent variable parameter curve is verified by aerodynamic test using the standard independent variable-strain parameter curve.

[0237] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0238] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0239] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0240] Obtaining an initial pneumatic test cycle and a pneumatic test variable matrix, extracting pneumatic test independent variable parameters and pneumatic test dependent variable parameters in the pneumatic test variable matrix in sequence, and obtaining an independent variable parameter threshold value of the pneumatic test independent variable parameter;

[0241] Constructing a test time scale circle according to the initial aerodynamic test cycle and the independent variable parameter threshold, and constructing a time-independent variable parameter sinusoidal image according to the test time scale circle;

[0242] Perform an aerodynamic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve;

[0243] The curve segments to be identified are sequentially extracted from the primary independent variable-dependent variable parameter curve according to the preset sliding detection window, and the curve mutation degree of the curve segments to be identified is calculated using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows:

[0244]

[0245] Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight;

[0246] Determine whether the curve mutation degree is greater than a preset mutation threshold;

[0247] If the curve mutation degree is not greater than the mutation threshold, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0248] If the curve mutation degree is greater than the mutation threshold, the target aerodynamic test period of the curve segment to be identified is calculated according to the curve mutation degree using a pre-constructed test period adjustment formula, wherein the test period adjustment formula is as follows:

[0249]

[0250] Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents the natural constant;

[0251] Determining whether the primary independent variable-dependent variable parameter curve has completed the extraction of the curve segment to be identified;

[0252] If the primary independent variable-dependent variable parameter curve has not completed the extraction of the curve segments to be identified, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window;

[0253] If the primary independent variable-dependent variable parameter curve completes the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of the curve segment to be identified and a sequence of the target aerodynamic test cycle;

[0254] According to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence, a secondary aerodynamic test is performed on the set of curve segments to be identified to obtain a set of secondary independent variable-dependent variable parameter curves;

[0255] Integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve;

[0256] A standard independent variable-strain parameter curve is obtained, and the target independent variable-dependent variable parameter curve is verified by aerodynamic test using the standard independent variable-strain parameter curve.

[0257] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0258] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0259] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0260] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A pneumatic test verification method for a high-speed three-dimensional flow centrifugal impeller, characterized in that: The method comprises: Obtaining an initial pneumatic test cycle and a pneumatic test variable matrix, extracting pneumatic test independent variable parameters and pneumatic test dependent variable parameters in the pneumatic test variable matrix in sequence, and obtaining an independent variable parameter threshold value of the pneumatic test independent variable parameter; Constructing a test time scale circle according to the initial aerodynamic test cycle and the independent variable parameter threshold, and constructing a time-independent variable parameter sinusoidal image according to the test time scale circle; Perform an aerodynamic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve; The curve segments to be identified are sequentially extracted from the primary independent variable-dependent variable parameter curve according to the preset sliding detection window, and the curve mutation degree of the curve segments to be identified is calculated using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows: Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight; Determine whether the curve mutation degree is greater than a preset mutation threshold; If the curve mutation degree is not greater than the mutation threshold, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window; If the curve mutation degree is greater than the mutation threshold, the target aerodynamic test period of the curve segment to be identified is calculated according to the curve mutation degree using a pre-constructed test period adjustment formula, wherein the test period adjustment formula is as follows: Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents the natural constant; Determining whether the primary independent variable-dependent variable parameter curve has completed the extraction of the curve segment to be identified; If the primary independent variable-dependent variable parameter curve has not completed the extraction of the curve segments to be identified, returning to the above step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window; If the primary independent variable-dependent variable parameter curve completes the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of the curve segment to be identified and a sequence of the target aerodynamic test cycle; According to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence, a secondary aerodynamic test is performed on the set of curve segments to be identified to obtain a set of secondary independent variable-dependent variable parameter curves; Integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve; A standard independent variable-strain parameter curve is obtained, and the target independent variable-dependent variable parameter curve is verified by aerodynamic test using the standard independent variable-strain parameter curve.

2. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 1, characterized in that: The obtaining of the initial pneumatic test cycle and the pneumatic test variable matrix includes: The pneumatic test level input by the user is received, and the initial pneumatic test cycle is calculated according to the pneumatic test level using a pre-built initial cycle calculation formula, wherein the initial cycle calculation formula is as follows: Wherein, T0 represents the initial pneumatic test cycle, τ represents the pneumatic test level, and γ represents the preset reference level cycle; Obtaining an independent variable parameter set and a dependent variable parameter set of a pneumatic test, constructing an independent variable matrix row sequence according to the independent variable parameter set of the pneumatic test, and constructing a dependent variable matrix column sequence according to the dependent variable parameter set of the pneumatic test; The pneumatic test variable matrix is ​​constructed according to the row sequence of the independent variable matrix and the column sequence of the dependent variable matrix.

3. The aerodynamic test verification method of the high-speed three-dimensional flow centrifugal impeller according to claim 2, characterized in that: The step of constructing a test time scale circle according to the initial pneumatic test cycle and the independent variable parameter threshold comprises: The independent variable threshold is used as the test time scale radius; An initial test circle is constructed according to the test time scale radius, and a unit angle period is calculated according to the initial aerodynamic test period using a pre-constructed unit angle period formula, wherein the unit angle period formula is as follows: Among them, t θ represents the unit angle period; The initial test circle is time-scaled according to the unit angle period to obtain a test time-scale circle.

4. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 3, characterized in that: The step of constructing a time-independent parameter sinusoidal image according to the test time scale circle comprises: According to the preset unit point-taking period and the unit angle period, the unit point-taking angle is calculated using the following formula: Among them, θ represents the unit point angle, t q Indicates the unit point-taking cycle; According to the unit point angle, a pre-built point angle formula is used to calculate the point angle sequence, wherein the point angle formula is as follows: in, Indicates the pth point angle, p indicates the point angle sequence number, Indicates the rounding up symbol; Sequentially extracting point angles from the point angle sequence, and taking points on the test time scale circle according to the point angles to obtain circumferential sampling points; Identify the circumferential sampling time and circumferential independent variable parameter value of the circumferential sampling point; According to a preset unit circle method, the circumferential sampling points are sinusoidally plotted in a pre-constructed two-dimensional coordinate system using the circumferential sampling time and the circumferential independent variable parameter value to obtain a circumferential plotting sequence; The circular plotting point sequence is fitted to obtain a time-independent parameter sinusoidal image.

5. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 4, characterized in that: The method performs an aerodynamic test on the pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the aerodynamic test dependent variable parameter to obtain an independent variable-dependent variable parameter curve, including: Extracting a circular plotting point sequence from the time-independent variable parameter sinusoidal image, and identifying a circular sampling time sequence and a circular independent variable parameter value sequence of the circular plotting point sequence; Setting a circumferential time series independent variable value set according to the circumferential sampling time series and the circumferential independent variable parameter value sequence; According to the preset independent variable parameter test value set and the circumferential time series independent variable value set, an aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent variable parameter to obtain a primary dependent variable parameter value sequence; According to the circumferential time series independent variable value set and the primary dependent variable value sequence, points are plotted in the two-dimensional coordinate system to obtain a primary independent variable-dependent variable scatter point set; The first-order independent variable-dependent variable parameter scatter point set is fitted to obtain a first-order independent variable-dependent variable parameter curve.

6. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 5, characterized in that: The extracting the curve segments to be identified in sequence from the primary independent variable-dependent variable parameter curve according to the preset sliding detection window includes: Identify the window duration of the sliding detection window, and segment the primary independent variable-dependent variable parameter curve according to the window duration to obtain a set of curve segments to be identified; The curve segments to be identified are sequentially extracted from the set of curve segments to be identified.

7. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 6, characterized in that: The method of performing a secondary aerodynamic test on the set of curve segments to be identified according to the sequence of curve segments to be identified and the target aerodynamic test cycle sequence to obtain a set of secondary independent variable-dependent variable parameter curves includes: Extracting the curve segments to be identified in sequence from the sequence of curve segments to be identified, and extracting the pneumatic test cycles related to the curve segments to be identified from the target pneumatic test cycle sequence; Constructing a relevant time scale circle according to the relevant aerodynamic test cycle and the independent variable parameter threshold; Extracting the starting point and the end point of a line segment from the curve segment to be identified, and identifying the starting time and the end time of the starting point and the end point of the line segment; Extracting a relevant time scale arc on the relevant time scale circle according to the starting time and the end time; Pick points on the relevant time scale arc according to the unit point picking angle to obtain an arc sampling point sequence; Extracting arc sampling points in the arc sampling point sequence in sequence, identifying the arc sampling time and the arc independent variable parameter value of the arc sampling points; According to the unit circle method, the arc sampling time and the arc independent variable parameter value are used to perform sinusoidal plotting on the arc sampling points in the two-dimensional coordinate system to obtain an arc plotting sequence; Identify the arc sampling time sequence and the arc independent variable parameter value sequence of the arc plotting point sequence; Setting the arc time series independent variable value set according to the arc sampling time series and the arc independent variable parameter value sequence; According to the independent variable parameter test value set and the arc time sequence independent variable value set, a secondary aerodynamic test is performed on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent parameter to obtain a secondary dependent parameter value sequence; Plot points in the two-dimensional coordinate system according to the arc time series independent variable value set and the secondary dependent variable value sequence to obtain a secondary independent variable-dependent variable scatter point set; The secondary independent variable-dependent variable parameter scatter point set is fitted to obtain a secondary independent variable-dependent variable parameter curve, and the secondary independent variable-dependent variable parameter curves of each curve segment to be identified are summarized to obtain a secondary independent variable-dependent variable parameter curve set.

8. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 7, characterized in that: The integrating the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve includes: Extracting secondary independent variable-dependent variable parameter curves in sequence from the secondary independent variable-dependent variable parameter curve set, and identifying the starting time scale and the ending time scale of the secondary independent variable-dependent variable parameter curve; According to the starting time scale and the end time scale, respectively intercept a sudden change independent variable-dependent variable curve segment and a sudden change time-independent variable sine segment in the primary independent variable-dependent variable parameter curve and the time-independent variable parameter sine image; The sudden independent-dependent curve segment and the sudden time-independent sine segment are removed from the primary independent-dependent parameter curve and the time-independent parameter sine image respectively to obtain a segmented independent-dependent parameter curve segment sequence and a segmented time-independent parameter sine sequence; Filling the quadratic independent-dependent parameter curve set into the segmented independent-dependent parameter curve segment sequence to obtain a target independent-dependent filling curve; Identify the arc time series independent variable value set corresponding to the quadratic independent variable-dependent variable parameter curve to obtain an arc time series independent variable value set sequence, fill the arc time series independent variable value set sequence into the segmented time-independent variable parameter sine sequence to obtain a target time-independent variable parameter sine curve; The target time-independent parameter sine curve is used to perform time-independent parameter mapping on the target independent-dependent filling curve to obtain a target independent-dependent parameter curve.

9. The aerodynamic test verification method of a high-speed three-dimensional flow centrifugal impeller according to claim 8, characterized in that: The method of using the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve includes: Using the standard independent variable-strain parameter curve to perform dependent variable parameter calibration on the target independent variable-dependent variable parameter curve to obtain a dependent variable parameter calibration result; According to the dependent parameter verification result, it is judged whether the high-speed three-dimensional flow centrifugal impeller meets the preset aerodynamic test verification standard, and the aerodynamic test verification of the target independent variable-dependent parameter curve is completed.

10. A pneumatic test verification system for a high-speed three-dimensional flow centrifugal impeller, characterized in that: The system comprises: A pneumatic test module is used to obtain an initial pneumatic test cycle and a pneumatic test variable matrix, extract pneumatic test independent variables and pneumatic test dependent variables in the pneumatic test variable matrix in turn, and obtain independent variable parameter thresholds of the pneumatic test independent variables; construct a test time scale circle according to the initial pneumatic test cycle and the independent variable parameter threshold, and construct a time-independent variable sinusoidal image according to the test time scale circle; perform a pneumatic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sinusoidal image and the pneumatic test dependent variable to obtain a primary independent variable-dependent variable curve; The secondary pneumatic test module is used to extract the curve segments to be identified in the primary independent variable-dependent variable parameter curve in sequence according to the preset sliding detection window, and calculate the curve mutation degree of the curve segments to be identified using a pre-constructed curve mutation formula, wherein the curve mutation formula is as follows: Among them, δ j represents the curve mutation degree of the jth curve segment to be identified, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be identified, and k i represents the slope of the i-th sampling point in the curve segment to be identified, k i-1 represents the slope of the i-1th sampling point in the curve segment to be identified, and β1 represents the mean slope weight; it is determined whether the curve mutation degree is greater than a preset mutation threshold; if the curve mutation degree is not greater than the mutation threshold, then the step of sequentially extracting the curve segments to be identified in the primary independent variable-dependent variable parameter curve according to the preset sliding detection window is returned; if the curve mutation degree is greater than the mutation threshold, then according to the curve mutation degree, the target aerodynamic test cycle of the curve segment to be identified is calculated using a pre-constructed test cycle adjustment formula, wherein the test cycle adjustment formula is as follows: Wherein, T' represents the target aerodynamic test cycle, T0 represents the initial aerodynamic test cycle, and e represents a natural constant; it is judged whether the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified; if the primary independent-dependent parameter curve has not completed the extraction of the curve segment to be identified, then the step of sequentially extracting the curve segment to be identified in the primary independent-dependent parameter curve according to the preset sliding detection window is returned to; if the primary independent-dependent parameter curve has completed the extraction of the curve segment to be identified, the curve segment to be identified and the target aerodynamic test cycle are summarized in a corresponding manner to obtain a sequence of curve segments to be identified and a sequence of target aerodynamic test cycles; a secondary aerodynamic test is performed on the set of curve segments to be identified according to the sequence of curve segments to be identified and the sequence of target aerodynamic test cycles to obtain a secondary set of independent-dependent parameter curves; An independent variable-dependent variable parameter curve integration module, used to integrate the primary independent variable-dependent variable parameter curve and the secondary independent variable-dependent variable parameter curve set to obtain a target independent variable-dependent variable parameter curve; The target independent variable-dependent variable parameter curve verification module is used to obtain a standard independent variable-strain parameter curve, and use the standard independent variable-strain parameter curve to perform aerodynamic test verification on the target independent variable-dependent variable parameter curve.

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