基于增强现实的航空发动机机匣数字孪生测调系统

doi:10.7527/S1000-6893.2023.29462

Abstract

Abstract:

In order to improve the assembly accuracy and efficiency of aero-engine casings， this paper proposes a digital twin testing and adjusting system for aero-engine casings based on augmented reality. Utilizing the high fidelity interactive characteristics of augmented reality device， real-time visualization guided assembly of multi-stage aero-engine casings is carried out. Furthermore， this paper establishes a mathematical model for the assembly of aero-engine multi-stage casings to achieve accurate prediction of coaxiality of multi-stage casing assembly. Combining the assembly mathematical model with visual models， this paper conducts digital twin assembly experiments based on simulated multi-stage aero-engine casings， to achieve digital twin model mapping for aero-engine casings. The experimental results show that the coaxiality prediction error of the digital twin assembly system proposed in this paper is 0.6 μm， the average latency of augmented reality visualization interaction is 11 ms， the average frame rate is 45 fps， and the assembly consumption time is reduced by 5 h， effectively improving the accuracy and efficiency of aero-engine casing assembly.

Key words: aero-engine, assembly of casings, digital twin, augmented reality, assembly mathematical model, visualization mode

CLC Number:

V235.1

Yingjie MEI, Dawei WANG, Chuanzhi SUN, Lamei YUAN, Xiaoming WANG, Yongmeng LIU. A digital twin testing and adjusting system for aero-engine casings based on augmented reality[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(21): 629462.

Figures/Tables 14

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机匣测量参数	中介机匣	涡轮机匣	末端轴承座
高度/mm	90	125	106
直径/mm	170	255	180
偏心/μm	2.8	4.4	16.4
偏心角/（°）	171	259	109
垂直度/μm	4.9	3.9	8.8
最低点角度/（°）	192	130	79

装配参数	数值
中介机匣装配相位/（°）	0
涡轮机匣装配相位/（°）	1
末端轴承座装配相位/（°）	179
本文模型同轴度最优值/μm	11.6
DIM模型同轴度最优值/μm	12.3
VP模型同轴度最优值/μm	13.7
同轴度实测值/μm	11.0
传统装配消耗时间/h	18
本文模型消耗时间/h	13
传统装配消耗成本/元	5 000
本文模型消耗成本/元	1 000

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A digital twin testing and adjusting system for aero-engine casings based on augmented reality

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