CN-121997544-A - Optimized arrangement method and system for airfoil flow field sensor

CN121997544ACN 121997544 ACN121997544 ACN 121997544ACN-121997544-A

Abstract

The application provides an optimized arrangement method and system of an airfoil flow field sensor, wherein the method comprises the steps of obtaining surface flow field parameter data of an airfoil under different working conditions and constructing a data matrix; and searching and optimizing the arrangement position of the sensor by taking the complement error of the matrix complement model as an optimization target to obtain an optimal sensor arrangement scheme. The method further comprises the step of comparing the reconstructed complete pressure distribution with the measured data or the historical simulation data of the partial redundant sensors, and triggering the re-optimization of the optimal sensor arrangement scheme if the error exceeds a preset threshold value. The application uses a matrix complement algorithm to recover and extract the data detected by the sensor so as to obtain as much information as possible, and a genetic algorithm is used for optimizing the configuration position of the sensor so as to maximize the information carried by the sensor detection data, thereby solving the problems of high-efficiency configuration and data reconstruction of the sensor in flow field detection.

Inventors

ZHAO YUAN
SHI XIAOTIAN
GAO JUN
LV MENG

Assignees

中国航天空气动力技术研究院

Dates

Publication Date: 20260508
Application Date: 20251219

Claims (10)

1. An airfoil flow field sensor optimizing arrangement method is characterized by comprising the following steps: acquiring surface flow field parameter data of the airfoil under different working conditions to form a data matrix containing a plurality of working condition samples and a plurality of potential sensor measuring positions; establishing a matrix complement model based on the low-rank characteristic of the data matrix, and complementing the data matrix by using the matrix complement model; and searching and optimizing the arrangement position of the sensor by taking the complement error of the matrix complement model as an optimization target to obtain an optimal sensor arrangement scheme.
2. The method according to claim 1, wherein the method further comprises: And comparing the complete pressure distribution reconstructed by the optimal sensor arrangement scheme with the measured data or the historical simulation data of the partial redundant sensors, and triggering the re-optimization of the optimal sensor arrangement scheme if the error exceeds a preset threshold value.
3. The method of claim 1, wherein the surface flow field parameter data is a pressure coefficient of an airfoil surface; the potential sensor measurement locations correspond to calculated grid points of the airfoil surface; The data matrix is obtained through computational fluid dynamics numerical simulation.
4. The method of claim 1, wherein the matrix completion model is a low rank matrix completion model constructed based on kernel norm minimization and is solved by an iterative soft threshold singular value decomposition algorithm for recovering complete data from sparse observed data.
5. The method according to claim 1, wherein searching and optimizing the arrangement position of the sensor using the completion error of the matrix completion model as an optimization target, to obtain an optimal sensor arrangement scheme specifically includes: And searching and optimizing the arrangement position of the sensor by adopting a genetic algorithm by taking the completion error of the matrix completion model as an optimization target to obtain an optimal sensor arrangement scheme with the minimum completion error.
6. The method according to claim 5, wherein the searching and optimizing the arrangement position of the sensor by using the genetic algorithm specifically comprises: a binary coding mode is adopted to represent whether the sensors are arranged at each potential position, and the root mean square error of the matrix complement model is used as a fitness function to construct an optimization problem; generating an initial population, and iteratively performing selection, crossover and mutation operations to optimize the population; outputting a sensor arrangement scheme corresponding to an individual with the smallest fitness function value when a preset termination condition is met; the initial population comprises elite individuals generated by selecting measuring positions with flow field parameter variation gradients exceeding a preset threshold value and random individuals generated by non-return random sampling.
7. An airfoil flow field sensor optimizing arrangement system, comprising: The data module is used for acquiring surface flow field parameter data of the airfoil under different working conditions to form a data matrix containing a plurality of working condition samples and a plurality of potential sensor measuring positions; the complementing module is used for establishing a matrix complementing model based on the low-rank characteristic of the data matrix, and complementing the data matrix by using the matrix complementing model; and the optimization module is used for searching and optimizing the arrangement position of the sensor by taking the complement error of the matrix complement model as an optimization target to obtain an optimal sensor arrangement scheme.
8. The system of claim 7, wherein the system further comprises: And the verification module is used for comparing the complete pressure distribution reconstructed by the optimal sensor arrangement scheme with the measured data or the historical simulation data of the partial redundant sensor, and triggering the re-optimization of the optimal sensor arrangement scheme if the error exceeds a preset threshold value.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the airfoil flow field sensor optimization arrangement method of any of claims 1-6.
10. A computer-readable storage medium, wherein a program for realizing information transfer is stored on the computer-readable storage medium, which when executed by a processor, realizes the steps of the airfoil flow field sensor optimizing arrangement method according to any one of claims 1 to 6.

Description

Optimized arrangement method and system for airfoil flow field sensor Technical Field The invention relates to the technical field of aerodynamic data detection of aircrafts, in particular to an optimized arrangement method and system of airfoil flow field sensors. Background From active flow control of the flow field to intelligent control of future deformable aircraft, detection of the aerodynamic parameters of the flow field plays an important role in the operation of the aircraft. In these flow field detection situations, there are often strict limitations on the number of sensors that can be placed due to space, expense, etc., which presents two problems, namely, how to arrange the positions of the sensors appropriately to maximize the information carried by the sensor detection data, and how to extract as much of the information as possible from the limited sensor detection data. The existing methods are mostly based on the intrinsic orthogonal decomposition (POD, proper orthogonal decomposition) method to solve both problems. A typical example is a greedy algorithm that combines Gappy POD methods to configure sensor placement locations and applies in unsteady flow of cylindrical wake. In addition, the heuristic algorithm is used for efficiently configuring the sensor in the cylindrical tail flow, and the POD method is combined with the self-organizing map to predict the complete data from the limited detection data. These POD-based methods have a potential limitation that makes them difficult to apply to complex scenarios because the original POD method is a linear model and thus difficult to process nonlinear data such that performance degradation problems are encountered even in the face of a transonic flow field, and improvements to this problem often require the incorporation of modeling of specific original physical problems that limit the application of these improved methods. Disclosure of Invention The invention aims to provide an optimized arrangement method and an optimized arrangement system for airfoil flow field sensors, and aims to solve the problems in the prior art. The embodiment of the invention provides an optimized arrangement method of airfoil flow field sensors, which comprises the following steps: acquiring surface flow field parameter data of the airfoil under different working conditions to form a data matrix containing a plurality of working condition samples and a plurality of potential sensor measuring positions; establishing a matrix complement model based on the low-rank characteristic of the data matrix, and complementing the data matrix by using the matrix complement model; and searching and optimizing the arrangement position of the sensor by taking the complement error of the matrix complement model as an optimization target to obtain an optimal sensor arrangement scheme. The embodiment of the invention provides an airfoil flow field sensor optimizing arrangement system, which comprises: The data module is used for acquiring surface flow field parameter data of the airfoil under different working conditions to form a data matrix containing a plurality of working condition samples and a plurality of potential sensor measuring positions; the complementing module is used for establishing a matrix complementing model based on the low-rank characteristic of the data matrix, and complementing the data matrix by using the matrix complementing model; and the optimization module is used for searching and optimizing the arrangement position of the sensor by taking the complement error of the matrix complement model as an optimization target to obtain an optimal sensor arrangement scheme. The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the airfoil flow field sensor optimizing arrangement method when being executed by the processor. The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores an information transmission implementation program, and the steps of the airfoil flow field sensor optimal arrangement method are implemented when the program is executed by a processor. The embodiment of the invention has the beneficial effects that the embodiment of the invention provides an airfoil sensor arrangement scheme based on a matrix completion algorithm combined with a genetic algorithm, wherein the matrix completion algorithm is used for recovering and extracting the data detected by the sensor to obtain as much information as possible, the genetic algorithm is used for optimizing the configuration position of the sensor to maximize the information carried by the sensor detected data, and the problems of high-efficiency configuration and data reconstruction of the sensor in flow field detection are solved. Drawings