雷珺祺1, 程月华1(
), 姜斌1, 徐骋2, 徐贵力1, 孙天宇1
收稿日期:2024-09-27
修回日期:2024-10-21
接受日期:2024-12-05
出版日期:2024-12-10
发布日期:2024-12-10
通讯作者:
程月华
E-mail:chengyuehua@nuaa.edu.cn
基金资助:
Junqi LEI1, Yuehua CHENG1(
), Bin JIANG1, Cheng XU2, Guili XU1, Tianyu SUN1
Received:2024-09-27
Revised:2024-10-21
Accepted:2024-12-05
Online:2024-12-10
Published:2024-12-10
Contact:
Yuehua CHENG
E-mail:chengyuehua@nuaa.edu.cn
Supported by:摘要:
针对长航时可复用飞行器舵回路故障检测、诊断、预测中存在的可量测数据少和数据不全面的问题,将数字孪生引入至舵回路健康管理中。首先,提出了一种舵回路系统的数字孪生框架,通过AMESim和FLUENT对舵回路进行了机、电、控制和飞行动态负载的精细化建模,并实现了三相机电控制和飞行实时动态负载模型的耦合集成。然后,为解决舵回路数字孪生与物理实体在正常、舵面缺损和松浮故障等多种运行状态中保持虚实一致的问题,构建了舵回路虚实一致性感知方法及数字孪生动态调整机制,使得舵回路数字孪生通过在线故障感知与加载,具备持续跟踪实体变化并保持虚实一致性的能力。最后,实验表明,正常和故障下所建舵回路数字孪生虚实电流和舵角的多项时域指标的幅值与趋势均能与物理实体保持虚实一致,且经孪生扩展的数据维度可为舵回路健康管理提供更全面的数据支撑。
中图分类号:
雷珺祺, 程月华, 姜斌, 徐骋, 徐贵力, 孙天宇. 面向舵回路故障的数字孪生建模及动态调整机制[J]. 航空学报, 2025, 46(19): 531273.
Junqi LEI, Yuehua CHENG, Bin JIANG, Cheng XU, Guili XU, Tianyu SUN. Digital-twin’s modelling and dynamic adjustment mechanism of rudder-loop-system under fault conditions[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(19): 531273.
表5
正常和故障下的虚实电流舵角指标对比
| 指标/运行状态 | 正常段 | 舵面缺损和松浮故障段 | ||
|---|---|---|---|---|
| 实体 | 孪生 | 实体 | 孪生 | |
| Is均值/A | 2.830 0 | 2.797 4 | ||
| Is方差 | 0.054 1 | 0.045 2 | 0.002 5 | 0.002 5 |
| Is峰峰值/A | 0.870 8 | 0.691 2 | 0.271 2 | 0.228 3 |
| 舵角均值/(°) | 5.121 6 | 5.119 6 | 0.039 8 | 0.045 4 |
| 舵角方差 | 0.002 0 | 0.002 5 | 0.001 0 | 0.001 1 |
| 舵角峰峰值/(°) | 0.325 3 | 0.372 1 | 0.201 3 | 0.231 1 |
| 虚实Is绝对误差均值/A | 0.267 1 | 0.138 0 | ||
| 虚实Is相对误差均值/% | 9.600 0 | 12.410 0 | ||
| 虚实舵角绝对误差均值/(°) | 0.052 3 | 0.003 7 | ||
| 虚实舵角相对误差均值/% | 1.021 2 | 8.090 0 | ||
表6
不同舵机建模方法的保真性结果比较
| 方法 | 建模维度 | 指标 | 多运行状态下自调整能力 |
|---|---|---|---|
| 本文模型 | 机、电、控制及外部负载耦合的精细化建模 | 无故障下,虚实电流虚实误差<9.6%,舵角相对误差<1.02%;故障下,虚实电流虚实误差<12.41%,舵角相对误差<8.09% | 虚实一致判别模型误诊率<6%,虚实非一致判别正确率>94.5,具备在舵面缺损、松浮和逆变器故障下的虚实一致自判别自调整能力 |
| 模型1[ | 电机、传动、伺服控制耦合的动力学建模 | 考虑多环节非线性间隙下,虚实共振频率相对误差<10% | |
| 模型2[ | 舵机控制特征建模 | 忽略舵机内部其他特征,虚实控制系统输出频率特性误差-22 dB,相对误差<8% | |
| 模型3[ | 舵机传动的动力学建模 | 带载运行下,舵轴虚实输出角相对误差<21.9% |
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