A pneumatic test verification method and system for a high-speed three-dimensional flow centrifugal impeller

Abstract

The present 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, including: conducting a first pneumatic test based on a time-self-variable parameter sine image and a pneumatic test dependent variable parameter to obtain a first self-variable-dependent variable parameter curve, and determining whether the curve mutation degree of the curve segment to be recognized is greater than the mutation threshold. If it is greater, a second pneumatic test is conducted on the curve segment set to be recognized to obtain a second self-variable-dependent variable parameter curve set. The first self-variable-dependent variable parameter curve and the second self-variable-dependent variable parameter curve set are integrated to obtain a target self-variable-dependent variable parameter curve, and pneumatic test verification is performed on the target self-variable-dependent variable parameter curve. The main purpose of the present invention is to solve the problems of low verification efficiency and poor verification variable regulation effect existing in the current pneumatic test verification method for high-speed three-dimensional flow centrifugal impellers.

Description

Technical Field

[0001] The present 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, as a key component of mechanical equipment, the pneumatic performance of a centrifugal impeller will directly affect the operating efficiency and stability of the entire mechanical equipment. With the continuous development of industrial technology, the requirements for the pneumatic performance of high-speed centrifugal impellers have also increased.

[0003] As one of the mainstream design methods for centrifugal impellers, the three-dimensional flow design method optimizes parameters such as the shape and load distribution of the centrifugal impeller through the three-dimensional flow characteristics inside the centrifugal impeller to improve the pneumatic performance of the centrifugal impeller. Currently, when conducting a qualification check on a centrifugal impeller, a pneumatic test can be used for qualification verification. However, the current pneumatic test mainly controls simple changes in independent variables and then measures the values of relevant dependent variables, and thus verifies the qualification of the high-speed centrifugal impeller based on the measured relevant values. This method is difficult to perform refined time-sharing regulation on independent variables to achieve time-sharing refined detection of high-speed centrifugal impellers. Therefore, the current pneumatic test verification method for high-speed three-dimensional flow centrifugal impellers has problems of low verification efficiency and poor verification variable regulation 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, and its main purpose is to solve the problems of low verification efficiency and poor verification variable regulation effect existing in the current pneumatic test verification method for high-speed three-dimensional flow centrifugal impellers.

[0005] To achieve the above object, a pneumatic test verification method for a high-speed three-dimensional flow centrifugal impeller provided by the present invention includes:

[0006] Obtain an initial pneumatic test period and a pneumatic test variable matrix, sequentially extract a pneumatic test independent variable parameter and a pneumatic test dependent variable parameter from the pneumatic test variable matrix, and obtain a threshold value of the independent variable parameter of the pneumatic test;

[0007] Construct a test time scale circle according to the initial pneumatic test period and the threshold value of the independent variable parameter, and construct a time-independent variable sine image according to the test time scale circle;

[0008] Conduct a first pneumatic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sine image and the pneumatic test dependent variable parameter, and obtain a first independent variable-dependent variable parameter curve;

[0009] Extract the curve segments to be recognized in the first independent-dependent parameter curve in sequence according to a preset sliding detection window, and calculate the curve mutation degree of the curve segments to be recognized by using a pre-constructed curve mutation formula, where the curve mutation formula is as follows:

[0010]

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

[0012] Judge 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, return to the step of extracting the curve segments to be recognized in the first independent-dependent parameter curve in sequence according to the preset sliding detection window;

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

[0015]

[0016] Among them, T' represents the target aerodynamic test period, T0 represents the initial aerodynamic test period, and e represents the natural constant;

[0017] Judge whether the extraction of the curve segments to be recognized in the first independent-dependent parameter curve is completed;

[0018] If the extraction of the curve segments to be recognized in the first independent-dependent parameter curve is not completed, return to the step of extracting the curve segments to be recognized in the first independent-dependent parameter curve in sequence according to the preset sliding detection window;

[0019] If the extraction of the curve segments to be recognized in the first independent-dependent parameter curve is completed, perform a corresponding summary on the curve segments to be recognized and the target aerodynamic test period to obtain a sequence of curve segments to be recognized and a sequence of target aerodynamic test periods;

[0020] Perform a secondary aerodynamic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the sequence of target aerodynamic test periods to obtain a set of second independent-dependent parameter curves;

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

[0022] Obtain the standard independent-strain parameter curve, and use the standard independent-strain parameter curve to conduct an aerodynamic test verification on the target independent-dependent parameter curve.

[0023] Optionally, the obtaining of the initial aerodynamic test period and the aerodynamic test variable matrix includes:

[0024] Receive the aerodynamic test level input by the user, and calculate the initial aerodynamic test period according to the aerodynamic test level by using a pre-constructed initial period calculation formula, where the initial period calculation formula is as follows:

[0025]

[0026] where T0 represents the initial aerodynamic test period, τ represents the aerodynamic test level, and γ represents a preset reference level period;

[0027] Obtain the set of aerodynamic test independent parameters and the set of aerodynamic test dependent parameters, construct the row sequence of the independent matrix according to the set of aerodynamic test independent parameters, and construct the column sequence of the dependent matrix according to the set of aerodynamic test dependent parameters;

[0028] Construct the aerodynamic test variable matrix according to the row sequence of the independent matrix and the column sequence of the dependent matrix.

[0029] Optionally, the constructing of the test time scale circle according to the initial aerodynamic test period and the independent parameter threshold includes:

[0030] Use the independent parameter threshold as the test time scale radius;

[0031] Construct an initial test circle according to the test time scale radius, and calculate the unit angle period according to the initial aerodynamic test period by using a pre-constructed unit angle period formula, where the unit angle period formula is as follows:

[0032]

[0033] where t θ represents the unit angle period;

[0034] Conduct time scaling on the initial test circle according to the unit angle period to obtain the test time scale circle.

[0035] Optionally, the constructing of the time-independent parameter sine image according to the test time scale circle includes:

[0036] According to the preset unit sampling period and the unit angle period, calculate the unit sampling angle using the following formula:

[0037]

[0038] where θ represents the unit sampling angle, and t q represents the unit sampling period;

[0039] According to the unit sampling angle, calculate the sampling angle sequence using the pre-constructed sampling angle formula, where the sampling angle formula is as follows:

[0040]

[0041] where, represents the p-th sampling angle, p represents the sampling angle serial number, represents the ceiling symbol;

[0042] Extract the sampling angles in sequence from the sampling angle sequence, and perform sampling on the test time scale circle according to the sampling angles to obtain the circumferential sampling points;

[0043] Identify the circumferential sampling time and the circumferential self-variable parameter values of the circumferential sampling points;

[0044] According to the preset unit circle method, perform sine plotting on the circumferential sampling points in a pre-constructed two-dimensional coordinate system using the circumferential sampling time and the circumferential self-variable parameter values to obtain a circumferential plotting point sequence;

[0045] Fit the circumferential plotting point sequence to obtain a time-self-variable parameter sine image.

[0046] Optionally, the first aerodynamic test on the pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-self-variable parameter sine image and the aerodynamic test dependent variable parameter to obtain a first self-variable-dependent variable parameter curve includes:

[0047] Extract the circumferential plotting point sequence from the time-self-variable parameter sine image, and identify the circumferential sampling time sequence and the circumferential self-variable parameter value sequence of the circumferential plotting point sequence;

[0048] Set a circumferential time sequence self-variable value set according to the circumferential sampling time sequence and the circumferential self-variable parameter value sequence;

[0049] According to the preset self-variable parameter test value set and the circumferential time sequence self-variable value set, perform a first aerodynamic test on the high-speed three-dimensional flow centrifugal impeller using the aerodynamic test dependent variable parameter to obtain a first dependent variable parameter value sequence;

[0050] Plot points in the two-dimensional coordinate system according to the circumferential time-series self-variable value set and the first-order dependent variable parameter value sequence to obtain a first-order self-variable - dependent variable parameter scatter set;

[0051] Fit the first-order self-variable - dependent variable parameter scatter set to obtain a first-order self-variable - dependent variable parameter curve.

[0052] Optionally, the step of sequentially extracting curve segments to be recognized from the first-order self-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 first-order self-variable - dependent variable parameter curve according to the window duration to obtain a set of curve segments to be recognized;

[0054] Sequentially extract curve segments to be recognized from the set of curve segments to be recognized.

[0055] Optionally, the step of performing a second pneumatic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the target pneumatic test cycle sequence to obtain a second-order self-variable - dependent variable parameter curve set includes:

[0056] Sequentially extract curve segments to be recognized from the sequence of curve segments to be recognized, and extract the relevant pneumatic test cycles of the curve segments to be recognized from the target pneumatic test cycle sequence;

[0057] Construct a relevant time scale circle according to the relevant pneumatic test cycle and the self-variable parameter threshold;

[0058] Extract the starting point and ending point of the line segment from the curve segment to be recognized, and identify the starting time and ending time of the starting point and ending point of the line segment;

[0059] Extract relevant time scale arcs on the relevant time scale circle according to the starting time and ending time;

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

[0061] Sequentially extract arc sampling points from the arc sampling point sequence, and identify the arc sampling time and arc self-variable parameter value of the arc sampling points;

[0062] According to the unit circle method, use the arc sampling time and arc self-variable parameter value to perform sine plotting on the arc sampling points in the two-dimensional coordinate system to obtain an arc plotting point sequence;

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

[0064] Set the arc time series self-variable value set according to the arc sampling time series and the arc self-variable parameter value series;

[0065] According to the self-variable parameter test value set and the arc time series self-variable value set, use the aerodynamic test dependent variable parameter to conduct a secondary aerodynamic test on the high-speed three-dimensional flow centrifugal impeller to obtain a secondary dependent variable parameter value series;

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

[0067] Fit the secondary self-variable - dependent variable parameter scatter set to obtain a secondary self-variable - dependent variable parameter curve, and summarize the secondary self-variable - dependent variable parameter curves of each curve segment to be identified to obtain a secondary self-variable - dependent variable parameter curve set.

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

[0069] Successively extract the secondary self-variable - dependent variable parameter curves from the secondary self-variable - dependent variable parameter curve set, and identify the start time scale and end time scale of the secondary self-variable - dependent variable parameter curve;

[0070] Intercept the mutation self-variable - dependent variable curve segment and the mutation time - self-variable sine segment from the primary self-variable - dependent variable parameter curve and the time - self-variable parameter sine image respectively according to the start time scale and end time scale;

[0071] Remove the mutation self-variable - dependent variable curve segment and the mutation time - self-variable sine segment from the primary self-variable - dependent variable parameter curve and the time - self-variable parameter sine image respectively to obtain a segmented self-variable - dependent variable parameter curve segment sequence and a segmented time - self-variable parameter sine sequence;

[0072] Fill the secondary self-variable - dependent variable parameter curve set into the segmented self-variable - dependent variable parameter curve segment sequence to obtain a target self-variable - dependent variable filled curve;

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

[0074] Use the target time - self-variable parameter sine curve to perform a time self-variable parameter mapping on the target self-variable - dependent variable filled curve to obtain a target self-variable - dependent variable parameter curve.

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

[0076] Performing a dependent parameter verification on the target independent-dependent parameter curve using the standard independent-strain parameter curve to obtain a dependent parameter verification result;

[0077] Judging whether the high-speed three-dimensional flow centrifugal impeller meets a preset aerodynamic test verification standard according to the dependent parameter verification result, and completing the aerodynamic test verification of the target independent-dependent parameter curve.

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

[0079] A primary aerodynamic test module, configured to obtain an initial aerodynamic test period and an aerodynamic test variable matrix, sequentially extract an aerodynamic test independent parameter and an aerodynamic test dependent parameter from the aerodynamic test variable matrix, and obtain an independent parameter threshold of the aerodynamic test independent parameter; constructing a test time scale circle according to the initial aerodynamic test period and the independent parameter threshold, and constructing a time-independent parameter sine image according to the test time scale circle; performing a primary aerodynamic test on a pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent parameter sine image and the aerodynamic test dependent parameter to obtain a primary independent-dependent parameter curve;

[0080] A secondary aerodynamic test module, configured to sequentially extract a curve segment to be recognized from the primary independent-dependent parameter curve according to a preset sliding detection window, and calculate a curve mutation degree of the curve segment to be recognized by using a pre-constructed curve mutation formula, where the curve mutation formula is as follows:

[0081]

[0082] Where δ j represents the curve mutation degree of the jth curve segment to be recognized, α1 represents an extreme value slope weight, I represents the total number of sampling points in the curve segment to be recognized, k i represents the slope of the ith sampling point in the curve segment to be recognized, k i-1 represents the slope of the (i - 1)th sampling point in the curve segment to be recognized, and β1 represents an average value slope weight; judging 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 step of sequentially extracting the curve segment to be recognized from the primary independent-dependent parameter curve according to the preset sliding detection window; if the curve mutation degree is greater than the mutation threshold, calculating a target aerodynamic test period of the curve segment to be recognized by using a pre-constructed test period adjustment formula according to the curve mutation degree, where the test period adjustment formula is as follows:

[0083]

[0084] Among them, T' represents the target aerodynamic test period, T0 represents the initial aerodynamic test period, and e represents the natural constant; determine whether the first independent-dependent parameter curve has completed the extraction of the curve segment to be recognized; if the first independent-dependent parameter curve has not completed the extraction of the curve segment to be recognized, return to the above step of sequentially extracting the curve segment to be recognized in the first independent-dependent parameter curve according to the preset sliding detection window; if the first independent-dependent parameter curve has completed the extraction of the curve segment to be recognized, perform corresponding summarization on the curve segment to be recognized and the target aerodynamic test period to obtain a sequence of curve segments to be recognized and a sequence of target aerodynamic test periods; perform a secondary aerodynamic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the sequence of target aerodynamic test periods to obtain a set of second independent-dependent parameter curves;

[0085] An independent-dependent parameter curve integration module, configured to integrate the first independent-dependent parameter curve and the set of second independent-dependent parameter curves to obtain a target independent-dependent parameter curve;

[0086] A target independent-dependent parameter curve verification module, configured to obtain a standard independent-strain parameter curve and use the standard independent-strain parameter curve to perform aerodynamic test verification on the target independent-dependent parameter curve. To solve the above problems, 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 executable by the at least one processor, and the instructions are executed by the at least one processor to implement the above-mentioned aerodynamic test verification method for a high-speed three-dimensional flow centrifugal impeller.

[0090] To solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored, and 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 art, in the embodiment of the present invention, a pneumatic test is first performed on the high-speed three-dimensional flow centrifugal impeller. When performing the first pneumatic test, first, the independent variables and dependent variables of the pneumatic test need to be sequentially extracted from the pneumatic test variable matrix, and then the threshold value of the independent variable of the pneumatic test is obtained, so that the test time scale circle can be constructed according to the initial pneumatic test cycle and the threshold value of the independent variable. At this time, the time-independent variable sine image can be constructed according to the test time scale circle. Finally, according to the time-independent variable sine image and the dependent variable of the pneumatic test, a pneumatic test is performed on the pre-constructed high-speed three-dimensional flow centrifugal impeller to obtain the first independent-dependent variable curve. When the first pneumatic test is completed, a second pneumatic test needs to be performed. Since the second pneumatic test is a second pneumatic test on the to-be-identified curve segments with large curve mutation degrees in the first pneumatic test, first, it is necessary to identify which to-be-identified curve segments need to be subjected to the second pneumatic test. The present invention sequentially extracts the to-be-identified curve segments from the first independent-dependent variable curve according to the preset sliding detection window, calculates the curve mutation degree of the to-be-identified curve segments by using the pre-constructed curve mutation formula, and determines whether the curve mutation degree is greater than the preset mutation threshold. If the curve mutation degree is greater than the mutation threshold, the target pneumatic test cycle of the to-be-identified curve segments is calculated by using the pre-constructed test cycle adjustment formula according to the curve mutation degree. Finally, the to-be-identified curve segments and the target pneumatic test cycle are summarized in a corresponding manner to obtain the to-be-identified curve segment sequence and the target pneumatic test cycle sequence. Finally, a second pneumatic test is performed on the to-be-identified curve segment set according to the to-be-identified curve segment sequence and the target pneumatic test cycle sequence to obtain the second independent-dependent variable curve set. Since the second pneumatic test is a supplementary test for the first pneumatic test, it is necessary to integrate the first independent-dependent variable curve and the second independent-dependent variable curve set to obtain the target independent-dependent variable curve. Finally, the target independent-dependent variable curve is verified by using the standard independent-strain variable curve to complete the pneumatic test verification of the high-speed three-dimensional flow centrifugal impeller. Therefore, the pneumatic test verification method, system, electronic device and computer-readable storage medium of the high-speed three-dimensional flow centrifugal impeller proposed by the present invention mainly aim to solve the problems of low verification efficiency and poor verification variable regulation effect in the current pneumatic test verification method of the high-speed three-dimensional flow centrifugal impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1 It is a schematic flowchart of a pneumatic test verification method for a high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention;

[0093] Figure 2 It is 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 The structural schematic diagram of the electronic device for implementing the aerodynamic test verification method of the high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention.

[0095] The implementation, functional characteristics and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[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] An embodiment of the present application provides a method for verifying the aerodynamic test of a high-speed three-dimensional flow centrifugal impeller. The execution subject of the method for verifying the aerodynamic test of the high-speed three-dimensional flow centrifugal impeller includes, but is not limited to, at least one of electronic devices such as a server, a terminal, etc. that can be configured to execute the method provided by the embodiment of the present application. In other words, the method for verifying the aerodynamic test of the high-speed three-dimensional flow centrifugal impeller can be executed by software or hardware installed on 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] Referring to Figure 1 As shown, it is a flowchart of the method for verifying the aerodynamic test of the high-speed three-dimensional flow centrifugal impeller provided by an embodiment of the present invention. In this embodiment, the method for verifying the aerodynamic test of the high-speed three-dimensional flow centrifugal impeller includes:

[0100] S1. Obtain the initial aerodynamic test period and the aerodynamic test variable matrix, sequentially extract the aerodynamic test independent variable parameters and the aerodynamic test dependent variable parameters in the aerodynamic test variable matrix, and obtain the threshold value of the independent variable parameters of the aerodynamic test.

[0101] It can be explained that the initial aerodynamic test period refers to the test duration for initially conducting the 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 parameters and the aerodynamic test dependent variable parameters. The aerodynamic test independent variable parameters refer to the parameters that affect the aerodynamic test, such as: mass flow rate, air pressure, temperature, etc. The aerodynamic test dependent variable parameters refer to the parameters that need to be measured during the aerodynamic test, such as: pressure ratio, aerodynamic efficiency, seven-stream pressure, air flow velocity, etc. The threshold value of the independent variable parameters refers to the maximum test value of the aerodynamic test independent variable parameters.

[0102] In the embodiment of the present invention, the obtaining of the initial aerodynamic test period and the aerodynamic test variable matrix includes:

[0103] Receive the pneumatic test level input by the user, and calculate the initial pneumatic test period according to the pneumatic test level by using a pre-constructed initial period calculation formula. The initial period calculation formula is as follows:

[0104]

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

[0106] Obtain the set of independent variables and the set of dependent variables of the pneumatic test. Construct the row sequence of the independent matrix according to the set of independent variables of the pneumatic test, and construct the column sequence of the dependent matrix according to the set of dependent variables of the pneumatic test;

[0107] Construct the pneumatic test variable matrix according to the row sequence of the independent matrix and the column sequence of the dependent matrix.

[0108] Further, the pneumatic test level refers to the test level for conducting a pneumatic test on a high-speed three-dimensional flow centrifugal impeller. 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 row sequence of the independent matrix refers to the row sequence composed of the independent variables of the pneumatic test in the pneumatic test variable matrix. First, the independent variables of the pneumatic test in the set of independent variables of the pneumatic test need to be sorted, and the sorted independent variables of the pneumatic test are used as the rows in the pneumatic test variable matrix. The column sequence of the dependent matrix refers to the column sequence composed of the dependent variables of the pneumatic test in the pneumatic test variable matrix.

[0109] S2. Construct a test time scale circle according to the initial pneumatic test period and the independent variable threshold, and construct a time-independent variable sine image according to the test time scale circle.

[0110] Further, the test time scale circle refers to a circle containing time scales constructed with the initial pneumatic test period as the circumference and the independent variable threshold as the radius. The time-independent variable sine image refers to a sine function image drawn according to the test time scale circle using the unit circle method. The unit circle method can relate trigonometric functions such as sine, cosine, and tangent to the coordinate points on 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 that angle.

[0111] In the embodiment of the present invention, the construction of the test time scale circle according to the initial pneumatic test period and the independent variable threshold includes:

[0112] Use the independent variable threshold as the test time scale radius;

[0113] Construct an initial test circle according to the test time scale radius, and calculate the unit angle period according to the initial pneumatic test period by using a pre-constructed unit angle period formula, where the unit angle period formula is as follows:

[0114]

[0115] where t θ represents the unit angle period;

[0116] Perform time scaling on the initial test circle according to the unit angle period to obtain a test time scale circle.

[0117] Furthermore, 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, when the arc length corresponding to 1° has a test duration of 10 s and the initial pneumatic test period is 3600 s. After obtaining the unit angle period, the unit angle period can be used for scale representation on the circumference of the initial test circle. For example: 10 s, 20 s, 30 s,..., 3600 s.

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

[0119] Calculate the unit sampling angle according to a preset unit sampling period and the unit angle period by using the following formula:

[0120]

[0121] where θ represents the unit sampling angle and t q represents the unit sampling period;

[0122] Calculate a sampling angle sequence according to the unit sampling angle by using a pre-constructed sampling angle formula, where the sampling angle formula is as follows:

[0123]

[0124] where represents the p-th sampling angle, [ represents the sampling angle serial number, represents the ceiling symbol;

[0125] Successively extract sampling angles in the sampling angle sequence, and perform sampling on the test time scale circle according to the sampling angles to obtain circumferential sampling points;

[0126] Identify the circumferential sampling time and the circumferential self-variable parameter value of the circumferential sampling points;

[0127] According to the preset unit circle method, use the circumferential sampling time and the circumferential independent variable value to perform sine plotting on the circumferential sampling points in a pre-constructed two-dimensional coordinate system, and obtain a circumferential plotting point sequence;

[0128] Fit the circumferential plotting point sequence to obtain a time-independent variable sine image.

[0129] Further, the unit sampling period refers to the test duration for sampling points on the test time scale circle, and the unit sampling angle refers to the angle when sampling points are taken on the test time scale circle according to the unit sampling period. For example, when the unit sampling period is 30 s and the unit angle period is 10 s, the unit sampling angle is 3°. The sampling angle sequence refers to the sequence composed of the sampling angles when sampling points are taken. For example: 3°, 6°, 9°, …, 3600°. It should be noted that when the unit sampling period and the unit angle period cannot be divided evenly, rounding up is required. For example, when the unit sampling angle is 7°, it is 52. At this time, the maximum value of the sampling angle serial number is 52, and the corresponding sampling angle is 364° (that is, 4°).

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

[0131] Specifically, when performing sine plotting using the unit circle method, it is necessary to first place the center of the test duration scale circle at the origin of the two-dimensional coordinate system, and then perform sine plotting on the positive x-axis of the two-dimensional coordinate system according to the circumferential sampling points to obtain a circumferential plotting point sequence. At this time, since there are circumferential plotting points on the negative y-axis in the circumferential plotting point sequence (circumferential plotting points refer to the coordinate points obtained after sine plotting), it is necessary to translate the circumferential plotting point sequence by a distance of the independent variable threshold value to the positive y-axis. At this time, the circumferential plotting point sequence is all on the positive y-axis. Finally, fit the circumferential plotting point sequence to obtain the time-independent variable sine image. The unit of the abscissa of the two-dimensional coordinate system is seconds, and the unit of the ordinate is the unit of the independent variable of the aerodynamic test or the unit of the dependent variable of the aerodynamic test. The unit of the ordinate of the time-independent variable sine image is the unit of the independent variable of the aerodynamic test.

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

[0133] Interpretable, the first pneumatic test refers to a test process of measuring the dependent parameter of the pneumatic test according to the variation relationship of the independent parameter of the pneumatic test with time in the time-independent parameter sine image. For example, when the independent parameter of the pneumatic test is the mass flow rate and the dependent parameter of the pneumatic test is the pneumatic efficiency, it is necessary to control the variation of the mass flow rate according to the time-independent parameter sine image and simultaneously measure the pneumatic efficiency of the high-speed three-dimensional flow centrifugal impeller. The first independent-dependent parameter curve refers to the curve representing the variation of the dependent parameter of the pneumatic test with the time-independent parameter sine image when performing the pneumatic test on the high-speed three-dimensional flow centrifugal impeller according to the time-independent parameter sine image.

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

[0135] Extract a circumferential point sequence in the time-independent parameter sine image, and identify the circumferential sampling time sequence and the circumferential independent parameter value sequence of the circumferential point sequence;

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

[0137] Perform a first pneumatic test on the high-speed three-dimensional flow centrifugal impeller using the dependent parameter of the pneumatic test according to the preset independent parameter test value set and the circumferential time-sequence independent variable value set to obtain a first dependent parameter value sequence;

[0138] Plot points in the two-dimensional coordinate system according to the circumferential time-sequence independent variable value set and the first dependent parameter value sequence to obtain a first independent-dependent parameter scatter set;

[0139] Fit the first independent-dependent parameter scatter set to obtain a first independent-dependent parameter curve.

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

[0141] S4. Extract the curve segments to be recognized in the first - order independent - dependent parameter curve in turn according to a preset sliding detection window, and calculate the curve mutation degree of the curve segments to be recognized by using a pre - constructed curve mutation formula.

[0142] It is interpretable that the sliding detection window refers to the extraction window for extracting the curve segments to be recognized, and the curve segments to be recognized refer to the curve segments for which the curve mutation degree needs to be calculated. The curve mutation degree refers to the degree of change of the curve segments to be recognized.

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

[0144]

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

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

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

[0148] Sequentially extract the curve segments to be recognized from the set of curve segments to be recognized.

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

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

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

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

[0153] Further, the target aerodynamic test period refers to the aerodynamic test period after adjusting the initial aerodynamic test period of the curve segment to be recognized according to the curve mutation degree.

[0154] Specifically, the test period adjustment formula is as follows:

[0155]

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

[0157] S7. Determine whether the extraction of the curve segments to be recognized from the primary independent-dependent variable parameter curve is completed.

[0158] If the extraction of the curve segments to be recognized from the primary independent-dependent variable parameter curve is not completed, return to the step of sequentially extracting the curve segments to be recognized in the primary independent-dependent variable parameter curve according to the preset sliding detection window.

[0159] If the primary independent-dependent parameter curve completes the extraction of the curve segment to be recognized, then execute S8, perform corresponding summarization on the curve segment to be recognized and the target aerodynamic test cycle, and obtain a sequence of curve segments to be recognized and a sequence of target aerodynamic test cycles.

[0160] It is understandable that the corresponding summarization refers to recognizing the curve segment to be recognized corresponding to the target aerodynamic test cycle, and then summarizing the corresponding curve segment to be recognized and the target aerodynamic test cycle.

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

[0162] It is understandable that the secondary aerodynamic test refers to performing a secondary aerodynamic test on the curve segment to be recognized according to the target aerodynamic test cycle. The set of secondary independent-dependent parameter curves refers to the set of curves where the dependent parameter of the aerodynamic test changes with the independent parameter of the aerodynamic test when performing an aerodynamic test on the high-speed three-dimensional flow centrifugal impeller according to the target aerodynamic test cycle.

[0163] In the embodiment of the present invention, performing a secondary aerodynamic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the sequence of target aerodynamic test cycles, and obtaining a set of secondary independent-dependent parameter curves includes:

[0164] Successively extract the curve segments to be recognized in the sequence of curve segments to be recognized, and extract the relevant aerodynamic test cycles of the curve segments to be recognized in the sequence of target aerodynamic test cycles;

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

[0166] Extract the starting point and ending point of the line segment in the curve segment to be recognized, and identify the starting time and ending time of the starting point and ending point of the line segment;

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

[0168] Take points on the relevant time scale arc according to the unit point-taking angle to obtain a sequence of arc sampling points;

[0169] Successively extract arc sampling points in the sequence of arc sampling points, and identify the arc sampling time and the value of the arc independent parameter of the arc sampling points;

[0170] According to the unit circle method, use the arc sampling time and the value of the arc independent parameter to perform sine point plotting on the arc sampling points in the two-dimensional coordinate system to obtain a sequence of arc plotted points.

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

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

[0173] According to the independent variable test value set and the arc time series independent variable value set, use the aerodynamic test dependent variable to conduct a secondary aerodynamic test on the high-speed three-dimensional flow centrifugal impeller to obtain the secondary dependent variable 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 the secondary independent-dependent variable scatter point set;

[0175] Fit the secondary independent-dependent variable scatter point set to obtain the secondary independent-dependent variable curve, and summarize the secondary independent-dependent variable curves of each curve segment to be identified to obtain the secondary independent-dependent variable curve set.

[0176] Furthermore, the relevant aerodynamic test period refers to the target aerodynamic test period corresponding to the curve segment to be identified. The relevant time scale circle refers to the test time scale circle specifically used for the secondary test of the curve segment to be identified and constructed according to the relevant aerodynamic test period. The starting time refers to the time point corresponding to the starting point of the line segment on the x-axis, and the ending time refers to the time point corresponding to the ending 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 ending time. The arc sampling time refers to the test time of the arc sampling point, and the arc independent variable value refers to the value of the aerodynamic test independent variable of the arc sampling point. The method of plotting points of the arc point sequence is the same as that of the circumferential point sequence and will not be elaborated here. The arc sampling time series refers to the sequence composed of the arc sampling times of each arc point in the arc point sequence, and the arc independent variable value sequence refers to the sequence composed of the aerodynamic test independent variable values of each arc point in the arc point sequence. The arc time series independent variable value set refers to the set composed of the aerodynamic test independent variables with arc sampling times. The method of obtaining the secondary dependent variable value sequence is the same as that of the primary dependent variable value sequence and will not be elaborated here.

[0177] It is understandable that the method of obtaining the secondary independent-dependent variable scatter point set is the same as that of the primary independent-dependent variable scatter point set and will not be elaborated here.

[0178] S10. Integrate the primary independent-dependent variable curve and the secondary independent-dependent variable curve set to obtain the target independent-dependent variable curve.

[0179] Interpretable, the target independent-dependent parameter curve refers to the curve obtained by inserting the set of quadratic independent-dependent parameter curves into the corresponding positions in the primary independent-dependent parameter curve.

[0180] In the embodiments of the present invention, integrating the primary independent-dependent parameter curve and the set of quadratic independent-dependent parameter curves to obtain the target independent-dependent parameter curve includes:

[0181] Sequentially extract the quadratic independent-dependent parameter curves from the set of quadratic independent-dependent parameter curves, and identify the start time scale and end time scale of the quadratic independent-dependent parameter curves;

[0182] According to the start time scale and end time scale, respectively intercept the mutated independent-dependent curve segment and the mutated time-independent sine segment in the primary independent-dependent parameter curve and the time-independent parameter sine image;

[0183] Remove the mutated independent-dependent curve segment and the mutated time-independent sine segment 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] Fill the set of quadratic independent-dependent parameter curves into the segmented independent-dependent parameter curve segment sequence to obtain the target independent-dependent filled curve;

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

[0186] Use the target time-independent parameter sine curve to perform a time-independent parameter mapping on the target independent-dependent filled curve to obtain the target independent-dependent parameter curve.

[0187] It is understandable that the mutated self-variable-dependent variable curve segment refers to the curve segment of the primary self-variable-dependent variable parameter curve at the starting time scale and the ending time scale, and the mutated time-self-variable sine segment refers to the sine curve segment of the time-self-variable parameter sine image at the starting time scale and the ending time scale. When filling the set of secondary self-variable-dependent variable parameter curves into the sequence of segmented self-variable-dependent variable parameter curve segments, it is necessary to connect the set of secondary self-variable-dependent variable parameter curves to the sequence of segmented self-variable-dependent variable parameter curve segments according to the starting time scale and the ending time scale of each secondary self-variable-dependent variable parameter curve. The filling process of the target time-self-variable parameter sine curve is the same. The time self-variable parameter mapping refers to associating the target time-self-variable parameter sine curve with the target self-variable-dependent variable filling curve using the test time.

[0188] For example, when the segmented time-self-variable parameter sine 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, and at this time the sequence of circular arc time series self-variable value sets is 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 sequence of circular arc time series self-variable value sets can be inserted into the segmented time-self-variable parameter sine sequence once to obtain sine curve segments with different circular / circular arc sampling times in different test duration intervals.

[0189] S11. Obtain the standard self-variable-strain parameter curve, and use the standard self-variable-strain parameter curve to conduct an aerodynamic test verification on the target self-variable-dependent variable parameter curve.

[0190] It is explainable that the marked self-variable-strain parameter curve refers to the primary self-variable-dependent variable parameter curve of a high-speed three-dimensional flow centrifugal impeller that meets the design standard during the aerodynamic test.

[0191] In the embodiment of the present invention, the using the standard self-variable-strain parameter curve to conduct an aerodynamic test verification on the target self-variable-dependent variable parameter curve includes:

[0192] Using the standard self-variable-strain parameter curve to conduct a dependent variable parameter verification on the target self-variable-dependent variable parameter curve to obtain a dependent variable parameter verification result;

[0193] Judge whether the high-speed three-dimensional flow centrifugal impeller meets the preset aerodynamic test verification standard according to the result of the dependent variable verification, and complete the aerodynamic test verification of the target independent-dependent variable curve.

[0194] Further, the dependent variable verification refers to comparing the coordinate points at the same test duration in the standard independent-dependent variable curve and the target independent-dependent variable curve. If the comparison result shows that the deviation degree of the corresponding coordinate points between the target independent-dependent variable curve and the standard independent-dependent variable 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 shows that the deviation degree of the corresponding coordinate points between the target independent-dependent variable curve and the standard independent-dependent variable 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 art, in the embodiment of the present invention, a pneumatic test is first performed on the high-speed three-dimensional flow centrifugal impeller. When performing the first pneumatic test, first, the independent variables and dependent variables of the pneumatic test need to be sequentially extracted from the pneumatic test variable matrix, and then the threshold of the independent variables of the pneumatic test is obtained, so that the test time scale circle can be constructed according to the initial pneumatic test period and the threshold of the independent variables. At this time, the time-independent variable sine image can be constructed according to the test time scale circle. Finally, the high-speed three-dimensional flow centrifugal impeller to be pre-constructed is subjected to a first pneumatic test according to the time-independent variable sine image and the dependent variables of the pneumatic test, and a first independent-dependent variable curve is obtained. When the first pneumatic test is completed, a second pneumatic test needs to be performed. Since the second pneumatic test is a second pneumatic test on the to-be-identified curve segments with large curve mutation degrees in the first pneumatic test, first, it is necessary to identify which to-be-identified curve segments need to be subjected to the second pneumatic test. The present invention sequentially extracts the to-be-identified curve segments from the first independent-dependent variable curve according to the preset sliding detection window, calculates the curve mutation degree of the to-be-identified curve segments by using the pre-constructed curve mutation formula, and determines whether the curve mutation degree is greater than the preset mutation threshold. If the curve mutation degree is greater than the mutation threshold, the target pneumatic test period of the to-be-identified curve segments is calculated by using the pre-constructed test period adjustment formula according to the curve mutation degree. Finally, the to-be-identified curve segments and the target pneumatic test period are summarized in a corresponding manner to obtain a sequence of to-be-identified curve segments and a sequence of target pneumatic test periods. Finally, the to-be-identified curve segment set is subjected to a second pneumatic test according to the sequence of to-be-identified curve segments and the sequence of target pneumatic test periods, and a set of second independent-dependent variable curves is obtained. Since the second pneumatic test is a supplementary test for the first pneumatic test, it is necessary to integrate the first independent-dependent variable curve and the set of second independent-dependent variable curves to obtain the target independent-dependent variable curve. Finally, the target independent-dependent variable curve is verified by using the standard independent-strain variable curve to complete the pneumatic test verification of the high-speed three-dimensional flow centrifugal impeller. Therefore, the pneumatic test verification method, system, electronic device, and computer-readable storage medium for the high-speed three-dimensional flow centrifugal impeller proposed by the present invention mainly aim to solve the problems of low verification efficiency and poor verification variable control effect in the current pneumatic test verification method for the high-speed three-dimensional flow centrifugal impeller.

[0196] Embodiment 2:

[0197] As Figure 2 shown, it is 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.

[0198] The pneumatic test verification system 100 of the high-speed three-dimensional flow centrifugal impeller described in the present invention can be installed in an electronic device. According to the functions achieved, 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-dependent variable curve integration module 103, and a target independent-dependent variable curve verification module 104. The modules described in the present invention can also be referred to as units, which refer to a series of computer program segments that can be executed by the processor of an electronic device and can complete fixed functions, and are stored in the memory of the electronic device.

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

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

[0201]

[0202] where δ j represents the curve mutation degree of the jth curve segment to be recognized, α1 represents the extreme slope weight, I represents the total number of sampling points in the curve segment to be recognized, k i represents the slope of the ith sampling point in the curve segment to be recognized, k i-1 represents the slope of the (i - 1)th sampling point in the curve segment to be recognized, 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, return to the step of sequentially extracting the curve segments to be recognized in the primary independent-dependent variable curve according to the preset sliding detection window; if the curve mutation degree is greater than the mutation threshold, calculate the target pneumatic test cycle of the curve segment to be recognized according to the curve mutation degree by using a pre-constructed test cycle adjustment formula. The test cycle adjustment formula is as follows:

[0203]

[0204] Wherein, T' represents the target aerodynamic test period, T0 represents the initial aerodynamic test period, and e represents the natural constant; it is determined whether the extraction of the curve segment to be recognized is completed for the primary independent-variable and dependent-variable parameter curve; if the extraction of the curve segment to be recognized is not completed for the primary independent-variable and dependent-variable parameter curve, then return to the above step of sequentially extracting the curve segment to be recognized in the primary independent-variable and dependent-variable parameter curve according to the preset sliding detection window; if the extraction of the curve segment to be recognized is completed for the primary independent-variable and dependent-variable parameter curve, then perform corresponding summarization on the curve segment to be recognized and the target aerodynamic test period to obtain a sequence of curve segments to be recognized and a sequence of target aerodynamic test periods; perform a secondary aerodynamic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the sequence of target aerodynamic test periods to obtain a set of secondary independent-variable and dependent-variable parameter curves;

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

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

[0207] Specifically, each module in the aerodynamic test verification system 100 of the high-speed three-dimensional flow centrifugal impeller in the embodiment of the present invention adopts the same technical means as those in the above Figure 1 and can produce the same technical effects, which will not be elaborated here.

[0208] Embodiment 3:

[0209] As Figure 3 shown, it is a schematic structural diagram of an electronic device for implementing the aerodynamic test verification method of 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 further 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] Among them, 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 (such as SD or DX memory, etc.), magnetic memory, magnetic disk, optical disc, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as the mobile hard disk of the electronic device 1. In some other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, etc. equipped on the electronic device 1. Further, the memory 11 may also include both the internal storage unit and the external storage device of the electronic device 1. The memory 11 can be used not only to store application software installed on the electronic device 1 and various types of data, such as the code of the pneumatic test verification program for a high-speed three-element flow centrifugal impeller, etc., but also to temporarily store data that has been output or will be output.

[0212] In some embodiments, the processor 10 may be composed of integrated circuits. For example, it may be composed of a single packaged integrated circuit, or may be composed of multiple integrated circuits with the same or different functions, including a combination of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, connecting all components of the entire electronic device through various interfaces and lines, and by running or executing programs or modules stored in the memory 11 (such as the pneumatic test verification program for a high-speed three-element flow centrifugal impeller, etc.), and calling the data stored in the memory 11, to perform 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. This bus can be divided into an address bus, a data bus, a control bus, etc. The bus is set to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0214] Figure 3 Only the electronic device with components is shown. Those skilled in the art can understand that Figure 3The shown structure does not constitute a limitation on the electronic device 1, and it may include fewer or more components than those shown, or combine certain components, or have different component arrangements.

[0215] For example, although not shown, the electronic device 1 may further include a power source (such as a battery) for powering each component. Preferably, the power source may be logically connected to the at least one processor 10 through a power management system, so as to implement functions such as charging management, discharging management, and power consumption management through the power management system. The power source may also include any components such as one or more DC or AC power sources, a recharge system, a power failure detection circuit, a power converter or inverter, a power status indicator, etc. The electronic device 1 may also include a variety of sensors, a Bluetooth module, a Wi-Fi module, etc., which will not be elaborated here.

[0216] Furthermore, the electronic device 1 may further 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. The user interface may be a display (Display), an input unit (such as a 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 liquid crystal display, and an OLED (Organic Light-Emitting Diode) toucher, etc. Among them, the display may also be appropriately referred to as a display screen or a display unit, which is used to display the information processed in the electronic device 1 and to display a visual user interface.

[0218] It should be understood that the above embodiments are only for illustration purposes and are not limited by this structure in the scope of the patent application.

[0219] The pneumatic 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 implement:

[0220] Obtain the initial pneumatic test period and the pneumatic test variable matrix, sequentially extract the pneumatic test independent variable parameters and the pneumatic test dependent variable parameters in the pneumatic test variable matrix, and obtain the independent variable parameter threshold of the pneumatic test independent variable parameters;

[0221] Construct a test time scale circle according to the initial pneumatic test period and the independent variable parameter threshold, and construct a time-independent variable parameter sine image according to the test time scale circle;

[0222] Conduct a pneumatic test on the pre-constructed high-speed three-dimensional flow centrifugal impeller according to the time-independent variable sine image and the dependent variable of the pneumatic test to obtain a primary independent-dependent variable curve;

[0223] According to the preset sliding detection window, sequentially extract the curve segments to be recognized from the primary independent-dependent variable curve, and calculate the curve mutation degree of the curve segments to be recognized by using the pre-constructed curve mutation formula. The curve mutation formula is as follows:

[0224]

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

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

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

[0228] If the curve mutation degree is greater than the mutation threshold, calculate the target pneumatic test period of the curve segment to be recognized according to the curve mutation degree by using the pre-constructed test period adjustment formula. The test period adjustment formula is as follows:

[0229]

[0230] where T' represents the target pneumatic test period, T0 represents the initial pneumatic test period, and e represents the natural constant;

[0231] Judge whether the extraction of the curve segments to be recognized from the primary independent-dependent variable curve is completed;

[0232] If the extraction of the curve segments to be recognized from the primary independent-dependent variable curve is not completed, return to the step of sequentially extracting the curve segments to be recognized from the primary independent-dependent variable curve according to the preset sliding detection window;

[0233] If the extraction of the curve segments to be recognized from the primary independent-dependent variable curve is completed, perform a corresponding summary of the curve segments to be recognized and the target pneumatic test period to obtain a sequence of curve segments to be recognized and a sequence of target pneumatic test periods;

[0234] Perform a secondary aerodynamic test on the set of curves to be recognized according to the sequence of curves to be recognized and the target aerodynamic test cycle sequence, and obtain a set of secondary independent-dependent parameter curves;

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

[0236] Obtain a standard independent-strain parameter curve, and use the standard independent-strain parameter curve to verify the aerodynamic test of the target independent-dependent 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 embodiment, which will not be elaborated here.

[0238] Further, if the modules / units integrated in the electronic device 1 are implemented in the form of software functional units and sold or used as independent products, they 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, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM, Read-Only Memory).

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

[0240] Obtain an initial aerodynamic test cycle and an aerodynamic test variable matrix, sequentially extract an aerodynamic test independent parameter and an aerodynamic test dependent parameter from the aerodynamic test variable matrix, and obtain an independent parameter threshold of the aerodynamic test independent parameter;

[0241] Construct a test time scale circle according to the initial aerodynamic test cycle and the independent parameter threshold, and construct a time-independent parameter sine image according to the test time scale circle;

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

[0243] Extract curves to be recognized in the primary independent-dependent parameter curve sequentially according to a preset sliding detection window, and calculate the curve mutation degree of the curves to be recognized by using a pre-constructed curve mutation formula, where the curve mutation formula is as follows:

[0244]

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

[0246] Judge 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, return to the above step of sequentially extracting the curve segments to be recognized in the one-time independent-dependent parameter curve according to the preset sliding detection window;

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

[0249]

[0250] Among them, T' represents the target aerodynamic test period, T0 represents the initial aerodynamic test period, and e represents the natural constant;

[0251] Judge whether the one-time independent-dependent parameter curve has completed the extraction of the curve segments to be recognized;

[0252] If the one-time independent-dependent parameter curve has not completed the extraction of the curve segments to be recognized, return to the above step of sequentially extracting the curve segments to be recognized in the one-time independent-dependent parameter curve according to the preset sliding detection window;

[0253] If the one-time independent-dependent parameter curve has completed the extraction of the curve segments to be recognized, perform a corresponding summary of the curve segments to be recognized and the target aerodynamic test period to obtain a sequence of curve segments to be recognized and a sequence of target aerodynamic test periods;

[0254] Perform a secondary aerodynamic test on the set of curve segments to be recognized according to the sequence of curve segments to be recognized and the sequence of target aerodynamic test periods to obtain a set of secondary independent-dependent parameter curves;

[0255] Integrate the one-time independent-dependent parameter curve and the set of secondary independent-dependent parameter curves to obtain a target independent-dependent parameter curve;

[0256] Obtain the standard independent-variable - strain parameter curve, and use the standard independent-variable - strain parameter curve to conduct an aerodynamic test verification on the target independent-variable - dependent-variable parameter curve.

[0257] The module described as a separation component may or may not be physically separated. The component shown as a module may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0258] In addition, in each embodiment of the present invention, the functional modules can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional modules.

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

[0260] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions 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: in, Indicates 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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