CN-121973937-A - Umbrella opening control method, system and storage medium based on complex flow field evolution stage

CN121973937ACN 121973937 ACN121973937 ACN 121973937ACN-121973937-A

Abstract

The invention discloses an umbrella opening control method, an umbrella opening control system and a storage medium based on a complex flow field evolution stage, wherein the method comprises the steps of acquiring multi-source sensor time sequence data of a flow field around a moving body, and preprocessing the multi-source sensor time sequence data; the method comprises the steps of carrying out characteristic analysis on preprocessed multi-source sensor time sequence data based on a sliding time window to construct change characteristics of single complex flow field evolution trend, carrying out complex flow field state analysis on flow fields around a moving body according to the change characteristics of the complex flow field evolution trend, identifying a current complex flow field evolution stage, determining a corresponding parachute opening strategy according to the current complex flow field evolution stage, and carrying out parachute opening control on the moving body based on the parachute opening strategy. According to the invention, through processing and analyzing the data of the multisource sensor, the current complex flow field evolution stage is accurately identified, so that the corresponding umbrella opening control mode is determined according to different evolution stages, the influence of the complex flow field on the umbrella opening process is reduced, and the safety and reliability of the umbrella opening process are improved.

Inventors

HU WEIKANG
XI ZHAOJUN
WANG LIHENG
WANG BO
PAN TIANXIANG

Assignees

武汉市天将技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260129

Claims (9)

1. An umbrella opening control method based on a complex flow field evolution stage is characterized by comprising the following steps of: Acquiring multi-source sensor time sequence data of a flow field around a moving body, and preprocessing the multi-source sensor time sequence data; performing feature analysis on the preprocessed multi-source sensor time sequence data based on the sliding time window to construct a change feature of a single complex flow field evolution trend; carrying out complex flow field state analysis on the flow field around the moving body according to the change characteristics of the complex flow field evolution trend, and identifying the current complex flow field evolution stage; and determining a corresponding parachute opening strategy according to the current complex flow field evolution stage, and carrying out parachute opening control on the moving body based on the parachute opening strategy.
2. The method of claim 1, wherein the preprocessing the multi-source sensor timing data comprises: time alignment is carried out on the time sequence data of the multi-source sensor; and performing noise suppression processing, abnormal data elimination processing and normalization processing on the time-aligned multi-source sensor time sequence data.
3. The method of claim 1, wherein the performing feature analysis on the preprocessed multi-source sensor time series data based on the sliding time window to construct the change feature of the complex flow field evolution trend comprises: based on a sliding time window, obtaining single-sensor variation amplitude characteristics, single-sensor variation rate characteristics and multi-sensor response consistency characteristics according to the preprocessed multi-source sensor time sequence data through an amplitude characteristic formula, a rate characteristic formula and a response consistency characteristic formula respectively; and constructing a change characteristic of the complex flow field evolution trend according to the single-sensor change amplitude characteristic, the single-sensor change rate characteristic and the multi-sensor response consistency characteristic.
4. The method of claim 1, wherein the performing complex flow field state analysis on the flow field around the moving body according to the change feature of the complex flow field evolution trend, and identifying the current complex flow field evolution stage comprises: converting the change characteristics of the complex flow field evolution trend into phase characteristic vectors; And carrying out complex flow field state analysis on the flow field around the moving body according to the stage feature vector, and identifying the current complex flow field evolution stage.
5. The method of claim 4, wherein said converting the change features of the current complex flow field evolution trend into phase feature vectors comprises: mapping the change characteristics of the current complex flow field evolution trend; And converting the processed multidimensional change characteristic into a stage characteristic vector.
6. The method of claim 4, wherein the performing complex flow field state analysis on the flow field around the moving body according to the phase feature vector, and identifying the current complex flow field evolution phase comprises: According to the stage feature vector, carrying out complex flow field state analysis on the flow field around the moving body according to a preset complex flow field state judgment method to obtain an evolution stage judgment result corresponding to the current sliding time window; Judging whether an evolution stage judgment result corresponding to the current sliding time window is consistent with an evolution stage judgment result corresponding to the last sliding time window; and if the current sliding time window is consistent with the current sliding time window, determining the current complex flow field evolution stage according to the evolution stage determination result corresponding to the current sliding time window.
7. The method of claim 1, wherein said determining a corresponding umbrella deployment strategy based on the current complex flow field evolution stage comprises: constructing a mapping relation table between an evolution stage and an umbrella opening strategy, wherein the evolution stage and the umbrella opening strategy in the mapping relation table have a one-to-one correspondence; and matching corresponding umbrella opening strategies through the mapping relation table according to the current complex flow field evolution stage.
8. An umbrella opening control system based on a complex flow field evolution stage, which is characterized by comprising: the data processing module is used for acquiring the time sequence data of the multisource sensor of the flow field around the moving body and preprocessing the time sequence data of the multisource sensor; The characteristic analysis module is used for carrying out characteristic analysis on the preprocessed multi-source sensor time sequence data based on the sliding time window so as to construct the change characteristics of the single complex flow field evolution trend; the stage determining module is used for carrying out complex flow field state analysis on the flow field around the moving body according to the change characteristics of the complex flow field evolution trend and identifying the current complex flow field evolution stage; and the umbrella opening control module is used for determining a corresponding umbrella opening strategy according to the current complex flow field evolution stage and controlling the opening of the movable body based on the umbrella opening strategy.
9. A storage medium, wherein an umbrella opening control program based on a complex flow field evolution stage is stored on the storage medium, and when the umbrella opening control program based on the complex flow field evolution stage is executed by a processor, the steps of the umbrella opening control method based on the complex flow field evolution stage according to any one of claims 1 to 7 are realized.

Description

Umbrella opening control method, system and storage medium based on complex flow field evolution stage Technical Field The invention relates to the technical field of umbrella opening control, in particular to an umbrella opening control method, an umbrella opening control system and a storage medium based on a complex flow field evolution stage. Background In the application scenes of air delivery, high-speed descent and the like, the surrounding flow field of the moving body has obvious unsteady and strong disturbance characteristics. As the velocity, altitude, and attitude of the moving body change, the surrounding flow field structure continually evolves and may undergo a transition from a relatively steady state to a strongly perturbed state. Under the condition of unstable flow field conditions, umbrella opening operation is carried out, so that the problems of severe attitude change, sudden structural load increase and the like are easily caused, and the system safety is further affected. In the prior art, the judgment of the flow field state is generally based on a single physical parameter threshold or relies on complex numerical simulation calculation. The single parameter threshold method is difficult to reflect the integral evolution characteristics of the flow field, is easily influenced by the change of working conditions, has large calculation amount, is difficult to meet the real-time application requirements, and cannot guarantee the safety and reliability of the umbrella opening process. Therefore, how to reduce the influence of the complex flow field on the umbrella opening process and ensure the safety and reliability of the umbrella opening process becomes a problem to be solved urgently. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention mainly aims to provide an umbrella opening control method, an umbrella opening control system and a storage medium based on a complex flow field evolution stage, and aims to solve the technical problems of reducing the influence of the complex flow field on an umbrella opening process and guaranteeing the safety and reliability of the umbrella opening process. In order to achieve the above object, the present invention provides an umbrella opening control method based on a complex flow field evolution stage, the umbrella opening control method based on the complex flow field evolution stage comprising: Acquiring multi-source sensor time sequence data of a flow field around a moving body, and preprocessing the multi-source sensor time sequence data; performing feature analysis on the preprocessed multi-source sensor time sequence data based on the sliding time window to construct a change feature of a single complex flow field evolution trend; carrying out complex flow field state analysis on the flow field around the moving body according to the change characteristics of the complex flow field evolution trend, and identifying the current complex flow field evolution stage; and determining a corresponding parachute opening strategy according to the current complex flow field evolution stage, and carrying out parachute opening control on the moving body based on the parachute opening strategy. Optionally, the preprocessing the multi-source sensor time series data includes: time alignment is carried out on the time sequence data of the multi-source sensor; and performing noise suppression processing, abnormal data elimination processing and normalization processing on the time-aligned multi-source sensor time sequence data. Optionally, the performing feature analysis on the preprocessed multi-source sensor time sequence data based on the sliding time window to construct a variation feature of the complex flow field evolution trend includes: based on a sliding time window, obtaining single-sensor variation amplitude characteristics, single-sensor variation rate characteristics and multi-sensor response consistency characteristics according to the preprocessed multi-source sensor time sequence data through an amplitude characteristic formula, a rate characteristic formula and a response consistency characteristic formula respectively; and constructing a change characteristic of the complex flow field evolution trend according to the single-sensor change amplitude characteristic, the single-sensor change rate characteristic and the multi-sensor response consistency characteristic. Optionally, the performing complex flow field state analysis on the flow field around the moving body according to the change feature of the complex flow field evolution trend, and identifying the current complex flow field evolution stage includes: converting the change characteristics of the complex flow field evolution trend into phase characteristic vectors; And carrying out complex f