Automatic synchronization method for time of airborne flight participating in non-airborne actual measurement load
Automatic synchronization method for time of airborne flight participating in non-airborne actual measurement load
- New search for: PAN SHAOZHEN
- New search for: ZHONG GUIYONG
- New search for: ZHOU TING
- New search for: WANG QIANG
- New search for: HE YUSHU
- New search for: WANG LISHENG
- New search for: PAN SHAOZHEN
- New search for: ZHONG GUIYONG
- New search for: ZHOU TING
- New search for: WANG QIANG
- New search for: HE YUSHU
- New search for: WANG LISHENG
The invention belongs to the technical field of aircraft structure load spectrum actual measurement, and particularly relates to an automatic synchronization method for airborne flight participating in non-airborne actual measurement load time. Flight parameter data of an airborne system and load actual measurement data of a non-airborne load test system are subjected to uniform sampling rate and filtering, and according to residual main peak valley points after filtering, the minimum mean square error (MSE) of linear regression of airborne flight parameter normal overload and non-airborne actual measurement load is taken as an index, so that the airborne flight parameter normal overload and non-airborne actual measurement load can be obtained; an airborne flight parameter normal overload point corresponding to the non-airborne actually measured maximum load is searched from the macroscopic aspect, and overall feature matching is completed; and then, in a range of x seconds near the searched overall optimal normal overload point, further locally searching an airborne flight parameter normal overload point corresponding to the non-airborne actually-measured maximum load so as to complete automatic time synchronization between airborne flight and non-airborne actually-measured loads. The problem of time synchronization of two sets of system data is effectively solved, high-quality flight parameter and load data samples are obtained, and the prediction precision of a flight parameter-load model is improved.
本发明属于飞机结构载荷谱实测技术领域，具体涉及一种机载飞参与非机载实测载荷时间自动同步方法；对机载系统飞参数据和非机载载荷测试系统的载荷实测数据，通过统一采样率、滤波，根据滤波后剩余的主要峰谷点，以机载飞参法向过载与非机载实测载荷线性回归的均方差MSE最小为指标，从宏观上搜寻与非机载实测最大载荷对应的机载飞参法向过载点，完成总体特征匹配；随后，在搜到的总体最优法向过载点附近x秒范围内，进一步在局部搜寻与非机载实测最大载荷对应的机载飞参法向过载点，以完成机载飞参与非机载实测载荷之间的自动时间同步。有效解决了两套系统数据的时间同步问题，获取了高质量的飞参、载荷数据样本，提升了飞参‑载荷模型的预测精度。
Document information
Automatic synchronization method for time of airborne flight participating in non-airborne actual measurement load
一种机载飞参与非机载实测载荷时间自动同步方法
2024-02-27
Patent
Electronic Resource
Chinese
| IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
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