Fan compressor test performance parameter data quality evaluation method and system

Abstract

The invention discloses a fan compressor test performance parameter data quality evaluation method and system, and the method comprises the steps: collecting the types of direct collection channels participating in the calculation of each performance parameter, then analyzing the uncertainty of each direct collection channel, and analyzing the corresponding performance parameter uncertainty based on the uncertainty of each direct collection channel, therefore, evaluation of the performance parameter data quality of the fan compressor test is realized through the calculated uncertainty of each performance parameter.

Description

Technical Field

[0001] The invention relates to the field of aeroengine fan compressor performance testing, and in particular to a fan compressor test performance parameter data quality assessment method and system. Background Art

[0002] With the development of the aviation engine industry and the deepening of research and development tasks, testing, as an important means of verification to confirm whether the product design meets the specifications, has increasingly stringent quality requirements in terms of planning, control, and review. Test data is an important output of the test process. The tester needs to evaluate the reliability and validity of the test data, especially the performance data, when delivering it, and clarify whether the test data meets the requirements.

[0003] During the aerodynamic performance test of the fan compressor test piece, the direct data of the test piece is collected by the test equipment distributed on the test piece and the tester. The performance data of the test piece can be obtained by calculating the direct data. Therefore, when evaluating the quality of the test data, it is necessary to first evaluate the direct data of the test piece, and then carry out the performance data evaluation based on the evaluation results of the direct data of the test piece. The test data evaluation results are an important basis for reflecting whether the test results meet the test requirements.

[0004] At present, there is no unified standard for the quality assessment of the test results of the fan boost stage and compressor of aircraft engines. Some foreign test parties use the method of analyzing the uncertainty of the data collected by the measuring points distributed on the test pieces and testers to assess the quality of test data, but they have not carried out relevant uncertainty analysis work on the test results that are of great concern in fan compressor performance tests - the performance data of the test pieces. Summary of the invention

[0005] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0006] The purpose of the present invention is to solve the above-mentioned problems and to provide a method and system for evaluating the quality of performance parameter data of a fan compressor test. The method and system fully consider the relationship between the direct acquisition channels involved in the calculation of performance parameter data, and analyze the uncertainty of the performance parameter data collected by the direct acquisition channels distributed on the test piece and the tester, thereby conducting a quality assessment of the fan compressor performance test data to clarify whether the test data meets the requirements.

[0007] The technical solution of the present invention is:

[0008] The present invention provides a method for evaluating the data quality of performance parameters of a fan compressor test, comprising the following steps: collecting the types of direct acquisition channels involved in the calculation of various performance parameters;

[0009] Analyze the uncertainty of each direct acquisition channel;

[0010] Analyzing the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel; and

[0011] The quality of the fan compressor test performance parameter data is evaluated based on the calculated uncertainty of each performance parameter.

[0012] According to an embodiment of the fan compressor test performance parameter data quality assessment method of the present invention, after collecting the types of direct acquisition channels involved in the calculation of each performance parameter, the fan compressor test performance parameter data quality assessment method determines whether the direct acquisition channels are independent; if so, the uncertainty of each direct acquisition channel involved in the performance parameter calculation is analyzed and calculated; if not, the direct acquisition channels that are related to each other are re-defined.

[0013] According to an embodiment of the fan compressor test performance parameter data quality assessment method of the present invention, the direct acquisition channel includes a sensing part located on the test piece or the tester and a sensor on the back-end acquisition device. The fan compressor test performance parameter data quality assessment method uses the uncertainty of the sensing part and the uncertainty of the sensor to calculate the corresponding direct acquisition channel synthetic standard uncertainty, and analyzes the corresponding direct acquisition channel uncertainty through the calculated direct acquisition channel synthetic standard uncertainty; wherein, the direct acquisition channel synthetic standard uncertainty calculation formula is as follows:

[0014]

[0015] Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of

[0016] u 受感部 represents the uncertainty of the sensing part,

[0017] u 传感器 Represents the sensor uncertainty.

[0018] According to an embodiment of the fan compressor test performance parameter data quality assessment method of the present invention, after calculating the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the corresponding performance parameter synthetic standard uncertainty is calculated based on the synthetic standard uncertainty of each direct acquisition channel, and then the quality of the corresponding fan compressor test performance parameter data is assessed according to the calculated synthetic standard uncertainty of each performance parameter; wherein the performance parameter synthetic standard uncertainty calculation formula is as follows:

[0019]

[0020] Among them, u c (y) represents the combined standard uncertainty of performance parameter y,

[0021] N represents the number of directly collected channel data.

[0022] u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of

[0023] Indicates the performance parameters for direct acquisition channel x i The partial derivative of .

[0024] According to an embodiment of the fan compressor test performance parameter data quality assessment method of the present invention, after calculating the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the fan compressor test performance parameter data quality assessment method can also introduce the performance parameter data collected during the test to calculate the relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel under different working conditions, and use the calculated relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel to calculate the corresponding relative synthetic standard uncertainty of the performance parameter, and then evaluate the fan compressor test performance parameter data quality according to the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty; wherein, the calculation formulas for the relative synthetic standard uncertainty of the direct acquisition channel and the relative synthetic standard uncertainty of the performance parameter are as follows:

[0025]

[0026]

[0027] Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of

[0028] u(x i) indicates direct acquisition channel x i The combined standard uncertainty of

[0029] u rel (y) represents the relative combined standard uncertainty of performance parameter y

[0030] N represents the number of directly collected channel data.

[0031] Indicates direct acquisition channel x i Sensitivity coefficient to performance parameter f.

[0032] The present invention also provides a fan compressor test performance parameter data quality assessment system, comprising a direct acquisition channel collection unit, a direct acquisition channel uncertainty analysis unit, a performance parameter uncertainty analysis unit and a performance parameter data quality assessment unit; wherein,

[0033] The direct acquisition channel collection unit is used to collect the direct acquisition channel types involved in the calculation of various performance parameters;

[0034] The direct acquisition channel uncertainty analysis unit is used to analyze the uncertainty of each direct acquisition channel;

[0035] The performance parameter uncertainty analysis unit is used to analyze the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel;

[0036] The performance parameter data quality assessment unit is used to assess the quality of the fan compressor test performance parameter data based on the calculated uncertainty of each performance parameter.

[0037] According to an embodiment of the fan compressor test performance parameter data quality assessment system of the present invention, after the direct acquisition channel collection unit collects the types of direct acquisition channels involved in the calculation of each performance parameter, it determines whether the direct acquisition channels are independent; if so, the collected direct acquisition channels are sent to the direct acquisition channel uncertainty analysis unit to analyze and calculate the uncertainty of each direct acquisition channel involved in the performance parameter calculation; if not, the direct acquisition channels that are related to each other are re-defined.

[0038] According to an embodiment of the fan compressor test performance parameter data quality assessment system of the present invention, the direct acquisition channel includes a sensing part located on the test piece or the tester and a sensor on the back-end acquisition device, and the direct acquisition channel uncertainty analysis unit calculates the corresponding direct acquisition channel synthetic standard uncertainty using the sensing part uncertainty and the sensor uncertainty, and analyzes the corresponding direct acquisition channel uncertainty using the calculated direct acquisition channel synthetic standard uncertainty; wherein, the direct acquisition channel synthetic standard uncertainty calculation formula is as follows:

[0039]

[0040] Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of

[0041] u 受感部 represents the uncertainty of the sensing part,

[0042] u 传感器 Represents the sensor uncertainty.

[0043] According to an embodiment of the fan compressor test performance parameter data quality assessment system of the present invention, after the direct acquisition channel uncertainty analysis unit calculates the composite standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the calculated composite standard uncertainty of each direct acquisition channel is sent to the performance parameter uncertainty analysis unit, and the performance parameter uncertainty analysis unit calculates the corresponding performance parameter composite standard uncertainty based on the composite standard uncertainty of each direct acquisition channel, and then the performance parameter data quality assessment unit assesses the corresponding fan compressor test performance parameter data quality according to the calculated composite standard uncertainty of each performance parameter; wherein, the performance parameter composite standard uncertainty calculation formula is as follows:

[0044]

[0045] Among them, u c (y) represents the combined standard uncertainty of performance parameter y,

[0046] N represents the number of directly collected channel data.

[0047] u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of

[0048] Indicates the performance parameters for direct acquisition channel x i The partial derivative of .

[0049] According to an embodiment of the fan compressor test performance parameter data quality assessment system of the present invention, after the direct acquisition channel uncertainty analysis unit calculates the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the performance parameter data collected during the test process can also be introduced to calculate the relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel under different working conditions, and the calculated relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel is sent to the performance parameter uncertainty analysis unit to calculate the corresponding relative synthetic standard uncertainty of the performance parameter, and then the performance parameter data quality assessment unit is used to assess the fan compressor test performance parameter data quality according to the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty; wherein, the calculation formulas for the relative synthetic standard uncertainty of the direct acquisition channel and the relative synthetic standard uncertainty of the performance parameter are as follows:

[0050]

[0051]

[0052] Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of

[0053] u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of

[0054] u rel (y) represents the relative combined standard uncertainty of performance parameter y

[0055] N represents the number of directly collected channel data.

[0056] Indicates direct acquisition channel x i Sensitivity coefficient to performance parameter f.

[0057] The present invention also provides a computer-readable storage medium for evaluating the quality of fan compressor test performance parameter data, which stores program instructions executable by a processor to implement the above method.

[0058] The present invention also provides a fan compressor test performance parameter data quality assessment device, comprising:

[0059] a memory for storing instructions executable by a processor; and

[0060] The processor is used to execute the memory instructions to implement the above method.

[0061] Compared with the prior art, the present invention has the following beneficial effects: the present invention is aimed at the quality assessment of the performance parameter data of the fan compressor test of the aircraft engine, collects the types of direct acquisition channels involved in the calculation of each performance parameter, and analyzes the uncertainty of each direct acquisition channel, and then uses the uncertainty of each direct acquisition channel to analyze the corresponding performance parameter uncertainty, and evaluates the quality of the performance parameter data of the fan compressor test by the uncertainty of each performance parameter obtained by calculation. Through the present invention, it can be intuitively clear whether the test data meets the requirements, and the standards for the quality assessment of the performance parameter data in the fan compressor performance test are unified, thereby improving the test efficiency of the fan compressor performance test. In addition, the present invention can also introduce the performance parameter data collected during the test to calculate the relative synthetic standard uncertainty of the performance parameters and the direct acquisition channels involved in the calculation, and use the relative synthetic standard uncertainty to evaluate the quality of the performance parameter data under different working conditions, thereby realizing the standardized evaluation of the quality of the performance parameter data in the fan compressor performance test under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The above features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or features may have the same or similar reference numerals.

[0063] Figure 1 It is a flow chart showing an embodiment of a method for evaluating the quality of performance parameter data of a fan compressor test according to the present invention.

[0064] Figure 2 It is an architectural diagram showing a first embodiment of a fan compressor test performance parameter data quality assessment system of the present invention. DETAILED DESCRIPTION

[0065] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0066] Disclosed herein is an embodiment of a method for evaluating the quality of performance parameter data of a fan compressor test. Figure 1 1 is a flow chart showing an embodiment of a method for evaluating the quality of performance parameter data of a fan compressor test according to the present invention. Figure 1 ,The following is a detailed description of each step of the fan compressor test performance parameter data quality assessment method.

[0067] Step S1: Collect the direct acquisition channel types involved in the calculation of various performance parameters.

[0068] During the fan compressor test, the types of measurement points that are most relevant to the various performance parameters of the test include total pressure measurement point Pt, total temperature measurement point Tt, static pressure measurement point Ps, etc. These measurement points are called direct acquisition channels, and the test data collected are collectively referred to as direct acquisition channel data, that is, performance parameter data. Before conducting uncertainty assessment of fan compressor test performance parameter data, it is first necessary to clarify the types of direct acquisition channels involved in the calculation of various performance parameters.

[0069] For example, for performance parameter y, the direct acquisition channels involved in the calculation of its performance parameter are x1, x2, ..., x N , then the performance parameter y is expressed as y=f(x1, x2, ..., x N ), indicating that the performance parameter y is calculated by N direct acquisition channels.

[0070] In addition, in this embodiment, the direct acquisition channels involved in the performance parameter calculation of the aircraft engine fan compressor test are independent. When clarifying the direct acquisition channels involved in the calculation of a certain performance parameter, it is necessary to determine whether the collected direct acquisition channels are independent. If independent, these direct acquisition channels are directly used to analyze the corresponding performance parameters. If not independent, it is necessary to clarify the direct acquisition channels that are related to each other, and consider the direct acquisition channels that are related to each other when performing uncertainty calculations.

[0071] Step S2: Analyze the uncertainty of each direct acquisition channel.

[0072] In this embodiment, when evaluating the quality of the performance parameter data collected by the direct acquisition channel, the uncertainty of the direct acquisition channel must be evaluated first. Among them, the hardware structure corresponding to the direct acquisition channel consists of two parts: the sensing part located on the test piece or tester, and the sensor on the back-end acquisition device (such as a pressure scanning valve, a temperature scanning valve, etc.). When analyzing the uncertainty of the direct acquisition channel, the uncertainty of the front-end sensing part and the uncertainty of the back-end sensor are introduced to calculate the corresponding direct acquisition channel synthetic standard uncertainty, and the corresponding direct acquisition channel uncertainty is analyzed by the calculated direct acquisition channel synthetic standard uncertainty. Among them, the calculation formula for the synthetic standard uncertainty of the direct acquisition channel is as follows:

[0073]

[0074] Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of 受感部 represents the uncertainty of the sensing part, u 传感器Represents the sensor uncertainty. Therefore, the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation is calculated in sequence through this formula.

[0075] Step S3: Analyze the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel.

[0076] Step S4: Evaluate the quality of the fan compressor test performance parameter data by calculating the uncertainty of each performance parameter.

[0077] In this embodiment, after the composite standard uncertainty of each direct acquisition channel involved in the performance parameter calculation is calculated in the above step S2, the composite standard uncertainty of each direct acquisition channel is used to calculate the corresponding performance parameter composite standard uncertainty, and then the quality of the corresponding fan compressor test performance parameter data is evaluated based on the calculated composite standard uncertainty of each performance parameter. Among them, the composite standard uncertainty calculation formula of the performance parameter y is as follows:

[0078]

[0079] Among them, u c (y) represents the combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of It represents the partial derivative of the performance parameter with respect to the direct acquisition channel. Therefore, the synthetic standard uncertainty of each performance parameter in the aircraft engine fan compressor test is calculated in turn through this formula, and then the quality of the corresponding fan compressor test performance parameter data is evaluated through the calculated synthetic standard uncertainty of each performance parameter.

[0080] In addition, in this embodiment, in order to facilitate the comparison of the accuracy of performance parameter measurement, during the fan compressor test performance data quality assessment process, the performance parameter data collected during the test process can also be introduced to calculate the relative synthetic standard uncertainty of the performance parameters.

[0081] Specifically, when calculating the relative synthetic standard uncertainty of performance parameters, first calculate the relative synthetic standard uncertainty of performance parameters of each direct acquisition channel under different working conditions, then use the calculated relative synthetic standard uncertainty of each direct acquisition channel to calculate the corresponding relative synthetic standard uncertainty of performance parameters, and evaluate the quality of fan compressor test performance parameter data by the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty. Among them, for the relative synthetic standard uncertainty of the direct acquisition channel, the calculation formula is as follows:

[0082]

[0083] Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of u(x i ) indicates direct acquisition channel x i After the relative combined standard uncertainty of each direct acquisition channel is calculated in turn by the above formula, the relative combined standard uncertainty of each direct acquisition channel is used to calculate the relative combined standard uncertainty of the corresponding performance parameter. The calculation formula is as follows:

[0084]

[0085] Among them, u rel (y) represents the relative combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data, Indicates direct acquisition channel x i Sensitivity coefficient to performance parameter f. Therefore, the relative synthetic standard uncertainty of each performance parameter in the aircraft engine fan compressor test is calculated in turn through this formula, and then the quality of the fan compressor test results is evaluated using the relative synthetic standard uncertainty of each performance parameter and the corresponding relative synthetic standard uncertainty of the direct acquisition channel.

[0086] The present embodiment is described in further detail below by taking the performance parameter of the physical flow rate of intake air during a fan compressor test as an example.

[0087] In this embodiment, the calculation formula for the intake physical flow rate of the fan compressor test piece is as follows:

[0088]

[0089] Where Cd0 represents the flow coefficient of the tester intake flow tube, P t0 Indicates the total pressure of the flow tube measurement section, T t0 Indicates the total temperature of the flow tube measurement section, P s0 represents the flow tube measuring cut-off static pressure, γ0 represents the specific heat ratio of the air in front of the test piece, R d represents the dry air gas constant, and A0 represents the measuring cross-sectional area of ​​the intake flow tube.

[0090] By analyzing the intake physical flow calculation formula, it can be clearly seen that there are four direct acquisition channels involved in the calculation, namely the flow coefficient Cd0 of the intake flow tube of the tester, the total pressure P of the flow tube measurement section t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0Then analyze the flow coefficient Cd0 of the inlet flow tube of the tester and the total pressure P of the flow tube measurement section t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 The corresponding combined standard uncertainties u(Cd0), u(P t0 )、u(T t0 )、u(P s0 ), and then substitute the synthetic standard uncertainty of these direct acquisition channels into the above-mentioned performance parameter synthetic standard uncertainty calculation formula to obtain the synthetic standard uncertainty corresponding to the intake physical flow rate. The synthetic standard uncertainty of the intake physical flow rate is used to evaluate the quality of the performance parameter data of the inlet physical flow rate.

[0091] In another embodiment, the flow coefficient Cd0 of the inlet flow tube of the tester and the total pressure P of the flow tube measuring section can also be introduced. t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 The performance parameter data collected during the test are used to calculate the flow coefficient Cd0 of the tester inlet flow tube and the total pressure P of the flow tube measurement section. t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 Relative combined standard uncertainty under different working conditions: u rel (Cd0),u rel (P t0 )、u rel (T t0 )、u rel (P s0 ). Then, the relative synthetic standard uncertainty of these direct acquisition channels is substituted into the calculation formula of the relative synthetic standard uncertainty of the above performance parameters to obtain the relative synthetic standard uncertainty of the intake physical flow under different working conditions. The quality of the performance parameter data of the inlet physical flow is evaluated by the relative synthetic standard uncertainty of the intake physical flow and the corresponding relative synthetic standard uncertainty of the direct acquisition channels.

[0092] This specification also provides a fan compressor test performance parameter data quality assessment system, Figure 2 FIG. 1 is a schematic diagram showing an embodiment of a fan compressor test performance parameter data quality assessment system according to the present invention. Figure 2As shown, in this embodiment, the fan compressor test performance parameter data quality assessment system includes a direct acquisition channel collection unit, a direct acquisition channel uncertainty analysis unit, a performance parameter uncertainty analysis unit and a performance parameter data quality assessment unit. Among them, the direct acquisition channel collection unit is used to collect the direct acquisition channel types involved in the calculation of each performance parameter. The direct acquisition channel uncertainty analysis unit is used to analyze the uncertainty of each direct acquisition channel. The performance parameter uncertainty analysis unit is used to analyze the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel. The performance parameter data quality assessment unit is used to assess the quality of the fan compressor test performance parameter data according to the calculated uncertainty of each performance parameter.

[0093] Specifically, during the fan compressor test, the types of measurement points that are most relevant to the various performance parameters of the test include total pressure measurement point Pt, total temperature measurement point Tt, static pressure measurement point Ps, etc. These measurement points are called direct acquisition channels, and the test data collected are collectively referred to as direct acquisition channel data, that is, performance parameter data. Before conducting uncertainty assessment of fan compressor test performance parameter data, it is first necessary to provide a direct acquisition channel collection unit to clearly specify the direct acquisition channel type involved in the calculation of each performance parameter.

[0094] For example, for performance parameter y, the direct acquisition channels involved in the calculation of its performance parameter are x1, x2, ..., x N , then the performance parameter y is expressed as y=f(x1, x2, ..., x N ), indicating that the performance parameter y is calculated by N direct acquisition channels.

[0095] In addition, in this embodiment, the direct acquisition channels involved in the performance parameter calculation of the aircraft engine fan compressor test are independent of each other. When the direct acquisition channel collection unit clarifies the direct acquisition channels involved in the calculation of a certain performance parameter, it is necessary to determine whether the collected direct acquisition channels are independent of each other. If they are independent, these direct acquisition channels are directly used to analyze the corresponding performance parameters. If they are not independent, it is necessary to clarify the direct acquisition channels that are related to each other, and consider the direct acquisition channels that are related to each other when performing uncertainty calculations.

[0096] In this embodiment, when the direct acquisition channel uncertainty analysis unit evaluates the quality of the performance parameter data collected by the direct acquisition channel, it is necessary to first evaluate the uncertainty of the direct acquisition channel. Among them, the hardware structure corresponding to the direct acquisition channel is composed of two parts: the sensing part located on the test piece or the tester, and the sensor on the back-end acquisition device (such as a pressure scanning valve, a temperature scanning valve, etc.). When analyzing the uncertainty of the direct acquisition channel, the uncertainty of the front-end sensing part and the uncertainty of the back-end sensor are introduced to calculate the corresponding direct acquisition channel synthetic standard uncertainty, and the corresponding direct acquisition channel uncertainty is analyzed by the calculated direct acquisition channel synthetic standard uncertainty. Among them, the direct acquisition channel synthetic standard uncertainty calculation formula is as follows:

[0097]

[0098] Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of 受感部 represents the uncertainty of the sensing part, u 传感器 Represents the sensor uncertainty. Therefore, the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation is calculated in sequence through this formula.

[0099] In this embodiment, after the direct acquisition channel uncertainty analysis unit calculates the composite standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the calculated composite standard uncertainty of each direct acquisition channel is sent to the performance parameter uncertainty analysis unit. The performance parameter uncertainty analysis unit uses the composite standard uncertainty of each direct acquisition channel to calculate the corresponding performance parameter composite standard uncertainty, and then the performance parameter data quality assessment unit assesses the corresponding fan compressor test performance parameter data quality according to the calculated composite standard uncertainty of each performance parameter. Among them, the composite standard uncertainty calculation formula of the performance parameter y is as follows:

[0100]

[0101] Among them, u c (y) represents the combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of It represents the partial derivative of the performance parameter with respect to the direct acquisition channel. Therefore, the synthetic standard uncertainty of each performance parameter in the aircraft engine fan compressor test is calculated in sequence through this formula, and then the calculated synthetic standard uncertainty of each performance parameter is sent to the performance parameter data quality assessment unit, and the performance parameter data quality assessment unit assesses the corresponding fan compressor test performance parameter data quality according to the calculated synthetic standard uncertainty of each performance parameter.

[0102] In addition, in this embodiment, in order to facilitate the comparison of the accuracy of performance parameter measurement, during the fan compressor test performance data quality assessment process, the performance parameter data collected during the test process can also be introduced to calculate the relative synthetic standard uncertainty of the performance parameters.

[0103] Specifically, when calculating the relative synthetic standard uncertainty of performance parameters, first calculate the relative synthetic standard uncertainty of each direct acquisition channel performance parameter under different working conditions, then use the calculated relative synthetic standard uncertainty of each direct acquisition channel performance parameter to calculate the corresponding relative synthetic standard uncertainty of performance parameters, and evaluate the quality of fan compressor test performance parameter data by the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty. Among them, for the direct acquisition channel relative synthetic standard, the calculation formula is as follows:

[0104]

[0105] Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of u(x i ) indicates direct acquisition channel x i After the relative combined standard uncertainty of each direct acquisition channel is calculated in turn by the above formula, the relative combined standard uncertainty of each direct acquisition channel is used to calculate the relative combined standard uncertainty of the corresponding performance parameter. The calculation formula is as follows:

[0106]

[0107] Among them, u rel (y) represents the relative combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data, Indicates direct acquisition channel x iSensitivity coefficient to performance parameter f. Therefore, the relative synthetic standard uncertainty of each performance parameter in the aircraft engine fan compressor test is calculated in turn through this formula, and then the quality of the fan compressor test results is evaluated using the relative synthetic standard uncertainty of each performance parameter and the corresponding relative synthetic standard uncertainty of the direct acquisition channel.

[0108] The present embodiment is described in further detail below by taking the performance parameter of the physical flow rate of intake air during a fan compressor test as an example.

[0109] In this embodiment, the calculation formula for the intake physical flow rate of the fan compressor test piece is as follows:

[0110]

[0111] Where Cd0 represents the flow coefficient of the tester intake flow tube, P t0 Indicates the total pressure of the flow tube measurement section, T t0 Indicates the total temperature of the flow tube measurement section, P s0 represents the flow tube measuring cut-off static pressure, γ0 represents the specific heat ratio of the air in front of the test piece, R d represents the dry air gas constant, and A0 represents the measuring cross-sectional area of ​​the intake flow tube.

[0112] By analyzing the intake physical flow calculation formula, it can be clearly seen that there are four direct acquisition channels involved in the calculation, namely the flow coefficient Cd0 of the intake flow tube of the tester, the total pressure P of the flow tube measurement section t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 Then analyze the flow coefficient Cd0 of the inlet flow tube of the tester and the total pressure P of the flow tube measurement section t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 The corresponding combined standard uncertainties u(Cd0), u(P t0 )、u(T t0 )、u(P s0 ), and then substitute the synthetic standard uncertainty of these direct acquisition channels into the above-mentioned performance parameter synthetic standard uncertainty calculation formula to obtain the synthetic standard uncertainty corresponding to the intake physical flow rate. The synthetic standard uncertainty of the intake physical flow rate is used to evaluate the quality of the performance parameter data of the inlet physical flow rate.

[0113] In another embodiment, the flow coefficient Cd0 of the inlet flow tube of the tester and the total pressure P of the flow tube measuring section can also be introduced. t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure Ps0 The performance parameter data collected during the test are used to calculate the flow coefficient Cd0 of the tester inlet flow tube and the total pressure P of the flow tube measurement section. t0 , Total temperature T of flow tube measurement section t0 And the flow tube measures the cut-off static pressure P s0 Relative combined standard uncertainty under different working conditions: u rel (Cd0),u rel (P t0 )、u rel (T t0 )、u rel (P s0 ). Then, the relative synthetic standard uncertainty of these direct acquisition channels is substituted into the calculation formula of the relative synthetic standard uncertainty of the above performance parameters to obtain the relative synthetic standard uncertainty of the intake physical flow under different working conditions. The quality of the performance parameter data of the inlet physical flow is evaluated by the relative synthetic standard uncertainty of the intake physical flow and the corresponding relative synthetic standard uncertainty of the direct acquisition channels.

[0114] This specification also provides a computer-readable medium storing a computer program code, which, when executed by a processor, implements the above-mentioned method for evaluating the quality of fan compressor test performance parameter data.

[0115] This specification also provides a fan compressor test performance parameter data quality assessment device, including an instruction memory for storing instructions executable by a processor, and a processor for executing instructions in the instruction memory to implement the fan compressor test performance parameter data quality assessment method as described above.

[0116] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

[0117] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The technician may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0118] The various illustrative logic blocks, modules, and circuits described in conjunction with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration.

[0119] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0120] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented as a computer program product in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. Storage media may be any available medium that can be accessed by a computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk often reproduces data magnetically, while disc reproduces data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

Claims

1. A method for evaluating the quality of fan compressor test performance parameter data, characterized in that: The following steps are involved: Collect the types of direct acquisition channels involved in the calculation of various performance parameters; Analyze the uncertainty of each direct acquisition channel; Analyze the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel; as well as The quality of the fan compressor test performance parameter data is evaluated based on the calculated uncertainty of each performance parameter.

2. The method for evaluating the quality of fan compressor test performance parameter data according to claim 1, characterized in that: The fan compressor test performance parameter data quality assessment method collects the types of direct acquisition channels involved in the calculation of each performance parameter, and then determines whether the direct acquisition channels are independent; if so, the uncertainty of each direct acquisition channel involved in the performance parameter calculation is analyzed and calculated; if not, the direct acquisition channels that are related to each other are re-defined.

3. The method for evaluating the quality of fan compressor test performance parameter data according to claim 1, characterized in that: The direct acquisition channel includes a sensing part located on a test piece or a tester and a sensor on a back-end acquisition device. The fan compressor test performance parameter data quality assessment method uses the uncertainty of the sensing part and the uncertainty of the sensor to calculate the corresponding direct acquisition channel synthetic standard uncertainty, and analyzes the corresponding direct acquisition channel uncertainty through the calculated direct acquisition channel synthetic standard uncertainty; wherein, the direct acquisition channel synthetic standard uncertainty calculation formula is as follows: Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of u 受感部 represents the uncertainty of the sensing part, u 传感器 Represents the sensor uncertainty.

4. The method for evaluating the quality of fan compressor test performance parameter data according to claim 3, characterized in that: The fan compressor test performance parameter data quality assessment method calculates the composite standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, calculates the corresponding performance parameter composite standard uncertainty based on the composite standard uncertainty of each direct acquisition channel, and then assesses the corresponding fan compressor test performance parameter data quality according to the calculated composite standard uncertainty of each performance parameter; wherein the performance parameter composite standard uncertainty calculation formula is as follows: Among them, u c (y) represents the combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data. u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of Indicates the performance parameters for direct acquisition channel x i The partial derivative of .

5. The method for evaluating the quality of fan compressor test performance parameter data according to claim 3, characterized in that: After the fan compressor test performance parameter data quality assessment method calculates the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the performance parameter data collected during the test process can also be introduced to calculate the relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel under different working conditions, and the calculated relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel is used to calculate the corresponding relative synthetic standard uncertainty of the performance parameter, and then the fan compressor test performance parameter data quality is assessed according to the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty; wherein, the calculation formulas for the relative synthetic standard uncertainty of the direct acquisition channel and the relative synthetic standard uncertainty of the performance parameter are as follows: Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of u rel (y) represents the relative combined standard uncertainty of performance parameter y N represents the number of directly collected channel data. Indicates direct acquisition channel x i Sensitivity coefficient to performance parameter f.

6. A fan compressor test performance parameter data quality assessment system, characterized in that: It includes a direct acquisition channel collection unit, a direct acquisition channel uncertainty analysis unit, a performance parameter uncertainty analysis unit and a performance parameter data quality assessment unit; wherein, The direct acquisition channel collection unit is used to collect the direct acquisition channel types involved in the calculation of various performance parameters; The direct acquisition channel uncertainty analysis unit is used to analyze the uncertainty of each direct acquisition channel; The performance parameter uncertainty analysis unit is used to analyze the corresponding performance parameter uncertainty based on the uncertainty of each direct acquisition channel; The performance parameter data quality assessment unit is used to assess the quality of the fan compressor test performance parameter data based on the calculated uncertainty of each performance parameter.

7. The fan compressor test performance parameter data quality assessment system according to claim 6 is characterized in that: After the direct acquisition channel collection unit collects the types of direct acquisition channels involved in the calculation of each performance parameter, it determines whether the direct acquisition channels are independent; if so, the collected direct acquisition channels are sent to the direct acquisition channel uncertainty analysis unit to analyze and calculate the uncertainty of each direct acquisition channel involved in the performance parameter calculation; if not, the direct acquisition channels that are related to each other are re-defined.

8. The fan compressor test performance parameter data quality assessment system according to claim 6 is characterized in that: The direct acquisition channel includes a sensing part located on the test piece or the tester and a sensor on the back-end acquisition device. The direct acquisition channel uncertainty analysis unit calculates the corresponding direct acquisition channel synthetic standard uncertainty by using the uncertainty of the sensing part and the uncertainty of the sensor, and analyzes the corresponding direct acquisition channel uncertainty by using the calculated synthetic standard uncertainty of the direct acquisition channel; wherein, the direct acquisition channel synthetic standard uncertainty calculation formula is as follows: Among them, u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of u 受感部 represents the uncertainty of the sensing part, u 传感器 Represents the sensor uncertainty.

9. The fan compressor test performance parameter data quality assessment system according to claim 8, characterized in that: After the direct acquisition channel uncertainty analysis unit calculates the composite standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the calculated composite standard uncertainty of each direct acquisition channel is sent to the performance parameter uncertainty analysis unit, and the performance parameter uncertainty analysis unit calculates the corresponding performance parameter composite standard uncertainty based on the composite standard uncertainty of each direct acquisition channel, and then the performance parameter data quality assessment unit assesses the corresponding fan compressor test performance parameter data quality according to the calculated composite standard uncertainty of each performance parameter; wherein, the performance parameter composite standard uncertainty calculation formula is as follows: Among them, u c (y) represents the combined standard uncertainty of performance parameter y, N represents the number of directly collected channel data. u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of Indicates the performance parameters for direct acquisition channel x i The partial derivative of .

10. The fan compressor test performance parameter data quality assessment system according to claim 8, characterized in that: After the direct acquisition channel uncertainty analysis unit calculates the synthetic standard uncertainty of each direct acquisition channel involved in the performance parameter calculation, the performance parameter data collected during the test can also be introduced to calculate the relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel under different working conditions, and the calculated relative synthetic standard uncertainty of the performance parameters of each direct acquisition channel is sent to the performance parameter uncertainty analysis unit to calculate the corresponding relative synthetic standard uncertainty of the performance parameter, and then the performance parameter data quality assessment unit is used to assess the fan compressor test performance parameter data quality according to the relative synthetic standard uncertainty of each performance parameter and the corresponding direct acquisition channel synthetic standard uncertainty; wherein, the calculation formulas for the relative synthetic standard uncertainty of the direct acquisition channel and the relative synthetic standard uncertainty of the performance parameter are as follows: Among them, u rel (x i ) indicates direct acquisition channel x i The relative combined standard uncertainty of u(x i ) indicates direct acquisition channel x i The combined standard uncertainty of u rel (y) represents the relative combined standard uncertainty of performance parameter y N represents the number of directly collected channel data. Indicates direct acquisition channel x i Sensitivity coefficient to performance parameter f.

11. A computer readable medium storing computer program code, characterized in that: The computer program code implements the method according to any one of claims 1 to 5 when executed by a processor.

12. A fan compressor test performance parameter data quality assessment device, characterized in that: include: a memory for storing instructions executable by a processor; as well as A processor, configured to execute the instructions to implement the method according to any one of claims 1 to 5.

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